+++ /dev/null
-<!-- doc/src/sgml/release-18.sgml -->
-<!-- See header comment in release.sgml about typical markup -->
-
- <sect1 id="release-18">
- <title>Release 18</title>
-
- <formalpara>
- <title>Release date:</title>
- <para>2025-??-??, CURRENT AS OF 2025-06-20</para>
- </formalpara>
-
- <sect2 id="release-18-highlights">
- <title>Overview</title>
-
- <para>
- <productname>PostgreSQL</productname> 18 contains many new features
- and enhancements, including:
- </para>
-
- <itemizedlist>
-
- <listitem>
- <para>
- (to be completed)
- </para>
- </listitem>
- </itemizedlist>
-
- <para>
- The above items and other new features of
- <productname>PostgreSQL</productname> 18 are explained in more detail
- in the sections below.
- </para>
-
- </sect2>
-
- <sect2 id="release-18-migration">
-
- <title>Migration to Version 18</title>
-
- <para>
- A dump/restore using <xref linkend="app-pg-dumpall"/> or use of
- <xref linkend="pgupgrade"/> or logical replication is required for
- those wishing to migrate data from any previous release. See <xref
- linkend="upgrading"/> for general information on migrating to new
- major releases.
- </para>
-
- <para>
- Version 18 contains a number of changes that may affect compatibility
- with previous releases. Observe the following incompatibilities:
- </para>
-
- <itemizedlist>
-
-<!--
-2024-10-16 [04bec894a04] initdb: Change default to using data checksums.
--->
-
- <listitem>
- <para>
- Change <xref linkend="app-initdb"/> default to enable data checksums
- (Greg Sabino Mullane)
- <ulink url="&commit_baseurl;04bec894a04">§</ulink>
- </para>
-
- <para>
- Checksums can be disabled with the
- new <application>initdb</application> option
- <option>--no-data-checksums</option>. <xref linkend="pgupgrade"/>
- requires matching cluster checksum settings, so this new option can
- be useful to upgrade non-checksum old clusters.
- </para>
- </listitem>
-
-<!--
-2025-01-16 [d7674c9fa] Seek zone abbreviations in the IANA data before timezone
--->
-
- <listitem>
- <para>
- Change time zone abbreviation handling (Tom Lane)
- <ulink url="&commit_baseurl;d7674c9fa">§</ulink>
- </para>
-
- <para>
- The system will now favor the current session's time
- zone abbreviations before checking the server variable
- <xref linkend="guc-timezone-abbreviations"/>. Previously
- <varname>timezone_abbreviations</varname> was checked first.
- </para>
- </listitem>
-
-<!--
-2024-12-02 [db6a4a985] Deprecate MD5 passwords.
--->
-
- <listitem>
- <para>
- Deprecate <link linkend="auth-password">MD5 password</link>
- authentication (Nathan Bossart)
- <ulink url="&commit_baseurl;db6a4a985">§</ulink>
- </para>
-
- <para>
- Support for MD5 passwords will be removed in a future major
- version release. <xref linkend="sql-createrole"/> and <xref
- linkend="sql-alterrole"/> now emit deprecation warnings when
- setting MD5 passwords. These warnings can be disabled by setting
- the <xref linkend="guc-md5-password-warnings"/> parameter to
- <literal>off</literal>.
- </para>
- </listitem>
-
-<!--
-2024-09-24 [62ddf7ee9] Add ONLY support for VACUUM and ANALYZE
--->
-
- <listitem>
- <para>
- Change <xref linkend="sql-vacuum"/> and <xref linkend="sql-analyze"/>
- to process the inheritance children of a parent (Michael Harris)
- <ulink url="&commit_baseurl;62ddf7ee9">§</ulink>
- </para>
-
- <para>
- The previous behavior can be performed by using the new
- <literal>ONLY</literal> option.
- </para>
- </listitem>
-
-<!--
-2024-09-30 [770233748] Do not treat \. as an EOF marker in CSV mode for COPY IN
-2024-10-01 [da8a4c166] Reject a copy EOF marker that has data ahead of it on th
--->
-
- <listitem>
- <para>
- Prevent <link linkend="sql-copy"><command>COPY FROM</command></link>
- from treating <literal>\.</literal> as an end-of-file marker when
- reading <acronym>CSV</acronym> files (Daniel Vérité, Tom Lane)
- <ulink url="&commit_baseurl;770233748">§</ulink>
- <ulink url="&commit_baseurl;da8a4c166">§</ulink>
- </para>
-
- <para>
- <xref linkend="app-psql"/> will still treat
- <literal>\.</literal> as an end-of-file marker when reading
- <acronym>CSV</acronym> files from <literal>STDIN</literal>.
- Older <application>psql</application> clients connecting to
- <productname>PostgreSQL</productname> 18 servers might experience <link
- linkend="app-psql-meta-commands-copy"><literal>\copy</literal></link>
- problems. This release also enforces that <literal>\.</literal>
- must appear alone on a line.
- </para>
- </listitem>
-
-<!--
-2024-10-03 [e2bab2d79] Remove support for unlogged on partitioned tables
--->
-
- <listitem>
- <para>
- Disallow unlogged partitioned tables (Michael Paquier)
- <ulink url="&commit_baseurl;e2bab2d79">§</ulink>
- </para>
-
- <para>
- Previously <link linkend="sql-altertable"><command>ALTER TABLE SET
- [UN]LOGGED</command></link> did nothing, and the creation of an
- unlogged partitioned table did not cause its children to be unlogged.
- </para>
- </listitem>
-
-<!--
-2025-01-23 [01463e1cc] Ensure that AFTER triggers run as the instigating user.
--->
-
- <listitem>
- <para>
- Execute <literal>AFTER</literal> <link
- linkend="triggers">triggers</link> as the role that was active when
- trigger events were queued (Laurenz Albe)
- <ulink url="&commit_baseurl;01463e1cc">§</ulink>
- </para>
-
- <para>
- Previously such triggers were run as the role that was active at
- trigger execution time (e.g., at <xref linkend="sql-commit"/>).
- This is significant for cases where the role is changed between queue
- time and transaction commit.
- </para>
- </listitem>
-
-<!--
-2024-09-12 [fefa76f70] Remove old RULE privilege completely.
--->
-
- <listitem>
- <para>
- Remove non-functional support for rule privileges in <xref
- linkend="sql-grant"/>/<xref linkend="sql-revoke"/> (Fujii Masao)
- <ulink url="&commit_baseurl;fefa76f70">§</ulink>
- </para>
-
- <para>
- These have been non-functional since
- <productname>PostgreSQL</productname> 8.2.
- </para>
- </listitem>
-
-<!--
-2024-08-12 [f0d112759] Remove "parent" column from pg_backend_memory_contexts
--->
-
- <listitem>
- <para>
- Remove column <link
- linkend="view-pg-backend-memory-contexts"><structname>pg_backend_memory_contexts</structname></link>.<structfield>parent</structfield>
- (Melih Mutlu)
- <ulink url="&commit_baseurl;f0d112759">§</ulink>
- </para>
-
- <para>
- This is no longer needed since
- <structname>pg_backend_memory_contexts</structname>.<structfield>path</structfield>
- was added.
- </para>
- </listitem>
-
-<!--
-2024-07-25 [32d3ed816] Add path column to pg_backend_memory_contexts view
-2025-04-18 [d9e03864b] Make levels 1-based in
- pg_log_backend_memory_contexts()
-2025-04-21 [706cbed35] doc: Fix memory context level in pg_log_backend_memory_c
--->
-
- <listitem>
- <para>
- Change
- <structname>pg_backend_memory_contexts</structname>.<structfield>level</structfield>
- and <link
- linkend="functions-admin-signal-table"><function>pg_log_backend_memory_contexts()</function></link>
- to be one-based (Melih Mutlu, Atsushi Torikoshi, David Rowley,
- Fujii Masao)
- <ulink url="&commit_baseurl;32d3ed816">§</ulink>
- <ulink url="&commit_baseurl;d9e03864b">§</ulink>
- <ulink url="&commit_baseurl;706cbed35">§</ulink>
- </para>
-
- <para>
- These were previously zero-based.
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect2>
-
- <sect2 id="release-18-changes">
- <title>Changes</title>
-
- <para>
- Below you will find a detailed account of the changes between
- <productname>PostgreSQL</productname> 18 and the previous major
- release.
- </para>
-
- <sect3 id="release-18-server">
- <title>Server</title>
-
- <sect4 id="release-18-optimizer">
- <title>Optimizer</title>
-
- <itemizedlist>
-
-<!--
-2025-02-17 [fc069a3a6] Implement Self-Join Elimination
--->
-
- <listitem>
- <para>
- Automatically remove some unnecessary table self-joins (Andrey
- Lepikhov, Alexander Kuzmenkov, Alexander Korotkov, Alena Rybakina)
- <ulink url="&commit_baseurl;fc069a3a6">§</ulink>
- </para>
-
- <para>
- This optimization can be disabled using server variable <xref
- linkend="guc-enable-self-join-elimination"/>.
- </para>
- </listitem>
-
-<!--
-2025-04-04 [c0962a113] Convert 'x IN (VALUES ...)' to 'x = ANY ...' then approp
--->
-
- <listitem>
- <para>
- Convert some <link
- linkend="functions-comparisons-in-scalar"><literal>IN (VALUES
- ...)</literal></link> to <literal>x = ANY ...</literal> for better
- optimizer statistics (Alena Rybakina, Andrei Lepikhov)
- <ulink url="&commit_baseurl;c0962a113">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-11-24 [ae4569161] Teach bitmap path generation about transforming OR-claus
--->
-
- <listitem>
- <para>
- Allow transforming <link
- linkend="functions-logical"><literal>OR</literal></link>-clauses
- to arrays for faster index processing (Alexander Korotkov, Andrey
- Lepikhov)
- <ulink url="&commit_baseurl;ae4569161">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-09-10 [52c707483] Use a hash table to de-duplicate column names in ruleuti
-2024-12-19 [276279295] Convert SetOp to read its inputs as outerPlan and innerP
-2024-12-19 [8d96f57d5] Improve planner's handling of SetOp plans.
-2024-09-05 [908a96861] Optimize WindowAgg's use of tuplestores
--->
-
- <listitem>
- <para>
- Speed up the processing of <link
- linkend="sql-intersect"><literal>INTERSECT</literal></link>,
- <link linkend="sql-except"><literal>EXCEPT</literal></link>, <link
- linkend="tutorial-window">window aggregates</link>, and <link
- linkend="sql-createview">view column aliases</link> (Tom Lane,
- David Rowley)
- <ulink url="&commit_baseurl;52c707483">§</ulink>
- <ulink url="&commit_baseurl;276279295">§</ulink>
- <ulink url="&commit_baseurl;8d96f57d5">§</ulink>
- <ulink url="&commit_baseurl;908a96861">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-11-26 [a8ccf4e93] Reordering DISTINCT keys to match input path's pathkeys
--->
-
- <listitem>
- <para>
- Allow the keys of <link linkend="sql-distinct"><command>SELECT
- DISTINCT</command></link> to be internally reordered to avoid sorting
- (Richard Guo)
- <ulink url="&commit_baseurl;a8ccf4e93">§</ulink>
- </para>
-
- <para>
- This optimization can be disabled using <xref
- linkend="guc-enable-distinct-reordering"/>.
- </para>
- </listitem>
-
-<!--
-2024-12-12 [bd10ec529] Detect redundant GROUP BY columns using UNIQUE indexes
--->
-
- <listitem>
- <para>
- Ignore <link linkend="sql-groupby"><literal>GROUP BY</literal></link>
- columns that are functionally dependent on other columns (Zhang
- Mingli, Jian He, David Rowley)
- <ulink url="&commit_baseurl;bd10ec529">§</ulink>
- </para>
-
- <para>
- If a <literal>GROUP BY</literal> clause includes all columns of
- a unique index, as well as other columns of the same table, those
- other columns are redundant and can be dropped from the grouping.
- This was already true for non-deferred primary keys.
- </para>
- </listitem>
-
-<!--
-2024-10-09 [67a54b9e8] Allow pushdown of HAVING clauses with grouping sets
-2024-09-10 [247dea89f] Introduce an RTE for the grouping step
-2024-09-10 [f5050f795] Mark expressions nullable by grouping sets
-2025-03-13 [cc5d98525] Fix incorrect handling of subquery pullup
--->
-
- <listitem>
- <para>
- Allow some <link
- linkend="sql-having"><literal>HAVING</literal></link> clauses
- on <link linkend="queries-grouping-sets"><literal>GROUPING
- SETS</literal></link> to be pushed to <link
- linkend="sql-where"><literal>WHERE</literal></link> clauses
- (Richard Guo)
- <ulink url="&commit_baseurl;67a54b9e8">§</ulink>
- <ulink url="&commit_baseurl;247dea89f">§</ulink>
- <ulink url="&commit_baseurl;f5050f795">§</ulink>
- <ulink url="&commit_baseurl;cc5d98525">§</ulink>
- </para>
-
- <para>
- This allows earlier row filtering. This release also fixes some
- <literal>GROUPING SETS</literal> queries that used to return
- incorrect results.
- </para>
- </listitem>
-
-<!--
-2024-07-09 [036bdcec9] Teach planner how to estimate rows for timestamp generat
-2024-12-02 [97173536e] Add a planner support function for numeric generate_seri
--->
-
- <listitem>
- <para>
- Improve row estimates for <link
- linkend="functions-srf-series"><function>generate_series()</function></link>
- using <link linkend="datatype-numeric"><type>numeric</type></link>
- and <link linkend="datatype-datetime"><type>timestamp</type></link>
- values (David Rowley, Song Jinzhou)
- <ulink url="&commit_baseurl;036bdcec9">§</ulink>
- <ulink url="&commit_baseurl;97173536e">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-05 [aa86129e1] Support "Right Semi Join" plan shapes
--->
-
- <listitem>
- <para>
- Allow the optimizer to use <literal>Right Semi Join</literal> plans
- (Richard Guo)
- <ulink url="&commit_baseurl;aa86129e1">§</ulink>
- </para>
-
- <para>
- Semi-joins are used when needing to find if there is at least
- one match.
- </para>
- </listitem>
-
-<!--
-2024-10-09 [828e94c9d] Consider explicit incremental sort for mergejoins
--->
-
- <listitem>
- <para>
- Allow merge joins to use <link
- linkend="guc-enable-incremental-sort">incremental sorts</link>
- (Richard Guo)
- <ulink url="&commit_baseurl;828e94c9d">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-04 [88f55bc97] Make derived clause lookup in EquivalenceClass more effi
-2025-04-08 [d69d45a5a] Speedup child EquivalenceMember lookup in planner
--->
-
- <listitem>
- <para>
- Improve the efficiency of planning queries accessing many partitions
- (Ashutosh Bapat, Yuya Watari, David Rowley)
- <ulink url="&commit_baseurl;88f55bc97">§</ulink>
- <ulink url="&commit_baseurl;d69d45a5a">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-30 [9b282a935] Fix partitionwise join with partially-redundant join cla
-2024-07-29 [513f4472a] Reduce memory used by partitionwise joins
--->
-
- <listitem>
- <para>
- Allow <link linkend="guc-enable-partitionwise-join">partitionwise
- joins</link> in more cases, and reduce its memory usage (Richard Guo,
- Tom Lane, Ashutosh Bapat)
- <ulink url="&commit_baseurl;9b282a935">§</ulink>
- <ulink url="&commit_baseurl;513f4472a">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-10 [fae535da0] Teach Append to consider tuple_fraction when accumulatin
--->
-
- <listitem>
- <para>
- Improve cost estimates of partition queries (Nikita Malakhov,
- Andrei Lepikhov)
- <ulink url="&commit_baseurl;fae535da0">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-02 [0dca5d68d] Change SQL-language functions to use the plan cache.
-2025-04-17 [09b07c295] Minor performance improvement for SQL-language functions
--->
-
- <listitem>
- <para>
- Improve <link linkend="xfunc-sql"><acronym>SQL</acronym>-language
- function</link> plan caching (Alexander Pyhalov, Tom Lane)
- <ulink url="&commit_baseurl;0dca5d68d">§</ulink>
- <ulink url="&commit_baseurl;09b07c295">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-21 [e22253467] Treat number of disabled nodes in a path as a separate c
--->
-
- <listitem>
- <para>
- Improve handling of disabled optimizer features (Robert Haas)
- <ulink url="&commit_baseurl;e22253467">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-indexes">
- <title>Indexes</title>
-
- <itemizedlist>
-
-<!--
-2025-04-04 [92fe23d93] Add nbtree skip scan optimization.
-2025-04-04 [8a510275d] Further optimize nbtree search scan key comparisons.
--->
-
- <listitem>
- <para>
- Allow skip scans of <link linkend="xfunc-sql">btree</link> indexes
- (Peter Geoghegan)
- <ulink url="&commit_baseurl;92fe23d93">§</ulink>
- <ulink url="&commit_baseurl;8a510275d">§</ulink>
- </para>
-
- <para>
- This allows multi-column btree indexes to be used by queries that
- only equality-reference the second or later indexed columns.
- </para>
- </listitem>
-
-<!--
-2025-03-18 [f278e1fe3] Allow non-btree unique indexes for partition keys
-2025-03-18 [9d6db8bec] Allow non-btree unique indexes for matviews
--->
-
- <listitem>
- <para>
- Allow non-btree unique indexes to be used as partition keys and in
- materialized views (Mark Dilger)
- <ulink url="&commit_baseurl;f278e1fe3">§</ulink>
- <ulink url="&commit_baseurl;9d6db8bec">§</ulink>
- </para>
-
- <para>
- The index type must still support equality.
- </para>
- </listitem>
-
-<!--
-2025-03-03 [8492feb98] Allow parallel CREATE INDEX for GIN indexes
--->
-
- <listitem>
- <para>
- Allow <link linkend="gin"><literal>GIN</literal></link> indexes to
- be created in parallel (Tomas Vondra, Matthias van de Meent)
- <ulink url="&commit_baseurl;8492feb98">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-02 [e9e7b6604] Add GiST and btree sortsupport routines for range types
--->
-
- <listitem>
- <para>
- Allow values to be sorted to speed range-type <link
- linkend="gist">GiST</link> and <link linkend="btree">btree</link>
- index builds (Bernd Helmle)
- <ulink url="&commit_baseurl;e9e7b6604">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-performance">
- <title>General Performance</title>
-
- <itemizedlist>
-
-<!--
-2025-03-17 [02844012b] aio: Basic subsystem initialization
-2025-03-17 [da7226993] aio: Add core asynchronous I/O infrastructure
-2025-03-18 [55b454d0e] aio: Infrastructure for io_method=worker
-2025-03-18 [247ce06b8] aio: Add io_method=worker
-2025-03-19 [10f664684] Introduce io_max_combine_limit.
-2025-03-19 [06fb5612c] Increase io_combine_limit range to 1MB.
-2025-03-26 [c325a7633] aio: Add io_method=io_uring
-2025-03-29 [50cb7505b] aio: Implement support for reads in smgr/md/fd
-2025-03-30 [047cba7fa] bufmgr: Implement AIO read support
-2025-03-30 [12ce89fd0] bufmgr: Use AIO in StartReadBuffers()
-2025-03-30 [2a5e709e7] Enable IO concurrency on all systems
--->
-
- <listitem>
- <para>
- Add an asynchronous I/O subsystem (Andres Freund, Thomas Munro,
- Nazir Bilal Yavuz, Melanie Plageman)
- <ulink url="&commit_baseurl;02844012b">§</ulink>
- <ulink url="&commit_baseurl;da7226993">§</ulink>
- <ulink url="&commit_baseurl;55b454d0e">§</ulink>
- <ulink url="&commit_baseurl;247ce06b8">§</ulink>
- <ulink url="&commit_baseurl;10f664684">§</ulink>
- <ulink url="&commit_baseurl;06fb5612c">§</ulink>
- <ulink url="&commit_baseurl;c325a7633">§</ulink>
- <ulink url="&commit_baseurl;50cb7505b">§</ulink>
- <ulink url="&commit_baseurl;047cba7fa">§</ulink>
- <ulink url="&commit_baseurl;12ce89fd0">§</ulink>
- <ulink url="&commit_baseurl;2a5e709e7">§</ulink>
- </para>
-
- <para>
- This feature allows backends to queue multiple read requests,
- which allows for more efficient sequential scans, bitmap
- heap scans, vacuums, etc. This is enabled by server
- variable <xref linkend="guc-io-method"/>, with server
- variables <xref linkend="guc-io-combine-limit"/> and <xref
- linkend="guc-io-max-combine-limit"/> added to control it.
- This also enables <xref linkend="guc-effective-io-concurrency"/>
- and <xref linkend="guc-maintenance-io-concurrency"/>
- values greater than zero for systems without
- <function>fadvise()</function> support. The new system view <link
- linkend="view-pg-aios"><structname>pg_aios</structname></link>
- shows the file handles being used for asynchronous I/O.
- </para>
- </listitem>
-
-<!--
-2024-09-21 [c4d5cb71d] Increase the number of fast-path lock slots
--->
-
- <listitem>
- <para>
- Improve the locking performance of queries that access many relations
- (Tomas Vondra)
- <ulink url="&commit_baseurl;c4d5cb71d">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-20 [adf97c156] Speed up Hash Join by making ExprStates support hashing
-2024-12-11 [0f5738202] Use ExprStates for hashing in GROUP BY and SubPlans
-2025-03-24 [4d143509c] Create accessor functions for TupleHashEntry.
-2025-03-24 [a0942f441] Add ExecCopySlotMinimalTupleExtra().
-2025-03-24 [626df47ad] Remove 'additional' pointer from TupleHashEntryData.
--->
-
- <listitem>
- <para>
- Improve the performance and reduce memory usage of hash joins and
- <link linkend="sql-groupby"><literal>GROUP BY</literal></link>
- (David Rowley, Jeff Davis)
- <ulink url="&commit_baseurl;adf97c156">§</ulink>
- <ulink url="&commit_baseurl;0f5738202">§</ulink>
- <ulink url="&commit_baseurl;4d143509c">§</ulink>
- <ulink url="&commit_baseurl;a0942f441">§</ulink>
- <ulink url="&commit_baseurl;626df47ad">§</ulink>
- </para>
-
- <para>
- This also improves hash set operations used by <link
- linkend="sql-except"><literal>EXCEPT</literal></link>, and hash
- lookups of subplan values.
- </para>
- </listitem>
-
-<!--
-2025-02-11 [052026c9b] Eagerly scan all-visible pages to amortize aggressive va
-2025-03-03 [06eae9e62] Trigger more frequent autovacuums with relallfrozen
--->
-
- <listitem>
- <para>
- Allow normal vacuums to freeze some pages, even though they are
- all-visible (Melanie Plageman)
- <ulink url="&commit_baseurl;052026c9b">§</ulink>
- <ulink url="&commit_baseurl;06eae9e62">§</ulink>
- </para>
-
- <para>
- This reduces the overhead of later full-relation
- freezing. The aggressiveness of this can be
- controlled by server variable and per-table setting <xref
- linkend="guc-vacuum-max-eager-freeze-failure-rate"/>. Previously
- vacuum never processed all-visible pages until freezing was required.
- </para>
- </listitem>
-
-<!--
-2025-03-20 [0164a0f9e] Add vacuum_truncate configuration parameter.
--->
-
- <listitem>
- <para>
- Add server variable <xref linkend="guc-vacuum-truncate"/> to control
- file truncation during <xref linkend="sql-vacuum"/> (Nathan Bossart,
- Gurjeet Singh)
- <ulink url="&commit_baseurl;0164a0f9e">§</ulink>
- </para>
-
- <para>
- A storage-level parameter with the same name and behavior already
- existed.
- </para>
- </listitem>
-
-<!--
-2025-03-12 [ff79b5b2a] Increase default effective_io_concurrency to 16
-2025-03-18 [cc6be07eb] Increase default maintenance_io_concurrency to 16
--->
-
- <listitem>
- <para>
- Increase server variables <xref
- linkend="guc-effective-io-concurrency"/>'s and <xref
- linkend="guc-maintenance-io-concurrency"/>'s default values to 16
- (Melanie Plageman)
- <ulink url="&commit_baseurl;ff79b5b2a">§</ulink>
- <ulink url="&commit_baseurl;cc6be07eb">§</ulink>
- </para>
-
- <para>
- This more accurately reflects modern hardware.
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-monitoring">
- <title>Monitoring</title>
-
- <itemizedlist>
-
-<!--
-2025-03-12 [9219093ca] Modularize log_connections output
--->
-
- <listitem>
- <para>
- Increase the logging granularity of server variable <xref
- linkend="guc-log-connections"/> (Melanie Plageman)
- <ulink url="&commit_baseurl;9219093ca">§</ulink>
- </para>
-
- <para>
- This server variable was previously only boolean, which is still
- supported.
- </para>
- </listitem>
-
-<!--
-2025-03-12 [18cd15e70] Add connection establishment duration logging
--->
-
- <listitem>
- <para>
- Add <varname>log_connections</varname> option to report the duration
- of connection stages (Melanie Plageman)
- <ulink url="&commit_baseurl;18cd15e70">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-07 [3516ea768] Add local-address escape "%L" to log_line_prefix.
--->
-
- <listitem>
- <para>
- Add <xref linkend="guc-log-line-prefix"/> escape
- <literal>%L</literal> to output the client <acronym>IP</acronym>
- address (Greg Sabino Mullane)
- <ulink url="&commit_baseurl;3516ea768">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-14 [6d376c3b0] Add GUC option to log lock acquisition failures.
-2025-06-03 [73bdcfab3] Rename log_lock_failure GUC to log_lock_failures for con
--->
-
- <listitem>
- <para>
- Add server variable <xref linkend="guc-log-lock-failures"/> to log
- lock acquisition failures (Yuki Seino, Fujii Masao)
- <ulink url="&commit_baseurl;6d376c3b0">§</ulink>
- <ulink url="&commit_baseurl;73bdcfab3">§</ulink>
- </para>
-
- <para>
- Specifically it reports <link
- linkend="sql-for-update-share"><command>SELECT
- ... NOWAIT</command></link> lock failures.
- </para>
- </listitem>
-
-<!--
-2025-01-28 [30a6ed0ce] Track per-relation cumulative time spent in [auto]vacuum
--->
-
- <listitem>
- <para>
- Modify <link
- linkend="monitoring-pg-stat-all-tables-view"><structname>pg_stat_all_tables</structname></link>
- and its variants to report the time spent in <xref
- linkend="sql-vacuum"/>, <xref linkend="sql-analyze"/>, and their
- <link linkend="autovacuum">automatic</link> variants (Sami Imseih)
- <ulink url="&commit_baseurl;30a6ed0ce">§</ulink>
- </para>
-
- <para>
- The new columns are <structfield>total_vacuum_time</structfield>,
- <structfield>total_autovacuum_time</structfield>,
- <structfield>total_analyze_time</structfield>, and
- <structfield>total_autoanalyze_time</structfield>.
- </para>
- </listitem>
-
-<!--
-2025-02-11 [bb8dff999] Add cost-based vacuum delay time to progress views.
-2025-02-14 [7720082ae] Add delay time to VACUUM/ANALYZE (VERBOSE) and autovacuu
--->
-
- <listitem>
- <para>
- Add delay time reporting to <xref linkend="sql-vacuum"/> and <xref
- linkend="sql-analyze"/> (Bertrand Drouvot, Nathan Bossart)
- <ulink url="&commit_baseurl;bb8dff999">§</ulink>
- <ulink url="&commit_baseurl;7720082ae">§</ulink>
- </para>
-
- <para>
- This information appears in the server log, the system views <link
- linkend="vacuum-progress-reporting"><structname>pg_stat_progress_vacuum</structname></link>
- and <link
- linkend="pg-stat-progress-analyze-view"><structname>pg_stat_progress_analyze</structname></link>,
- and the output of <xref linkend="sql-vacuum"/> and <xref
- linkend="sql-analyze"/> when in <literal>VERBOSE</literal>
- mode; tracking must be enabled with the server variable <xref
- linkend="guc-track-cost-delay-timing"/>.
- </para>
- </listitem>
-
-<!--
-2024-08-13 [4c1b4cdb8] Add resource statistics reporting to ANALYZE VERBOSE.
-2024-09-09 [bb7775234] Add WAL usage reporting to ANALYZE VERBOSE output.
--->
-
- <listitem>
- <para>
- Add <acronym>WAL</acronym>, <acronym>CPU</acronym>, and average
- read statistics output to <command>ANALYZE VERBOSE</command>
- (Anthonin Bonnefoy)
- <ulink url="&commit_baseurl;4c1b4cdb8">§</ulink>
- <ulink url="&commit_baseurl;bb7775234">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-17 [6a8a7ce47] Add information about WAL buffers full to VACUUM/ANALYZE
--->
-
- <listitem>
- <para>
- Add full <acronym>WAL</acronym> buffer count to
- <command>VACUUM</command>/<command>ANALYZE (VERBOSE)</command>
- and autovacuum log output (Bertrand Drouvot)
- <ulink url="&commit_baseurl;6a8a7ce47">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-12-19 [9aea73fc6] Add backend-level statistics to pgstats
-2025-03-03 [3f1db99bf] Handle auxiliary processes in SQL functions of backend s
--->
-
- <listitem>
- <para>
- Add per-backend I/O statistics reporting (Bertrand Drouvot)
- <ulink url="&commit_baseurl;9aea73fc6">§</ulink>
- <ulink url="&commit_baseurl;3f1db99bf">§</ulink>
- </para>
-
- <para>
- The statistics are accessed via <link
- linkend="pg-stat-get-backend-io"><function>pg_stat_get_backend_io()</function></link>.
- Per-backend I/O statistics can be cleared via <link
- linkend="monitoring-stats-funcs-table"><function>pg_stat_reset_backend_stats()</function></link>.
- </para>
- </listitem>
-
-<!--
-2025-01-14 [f92c854cf] Make pg_stat_io count IOs as bytes instead of blocks for
--->
-
- <listitem>
- <para>
- Add <link
- linkend="monitoring-pg-stat-io-view"><structname>pg_stat_io</structname></link>
- columns to report I/O activity in bytes (Nazir Bilal Yavuz)
- <ulink url="&commit_baseurl;f92c854cf">§</ulink>
- </para>
-
- <para>
- The new columns are <structfield>read_bytes</structfield>,
- <structfield>write_bytes</structfield>, and
- <structfield>extend_bytes</structfield>. The
- <structfield>op_bytes</structfield> column, which always equaled
- <link linkend="guc-block-size"><varname>BLCKSZ</varname></link>,
- has been removed.
- </para>
- </listitem>
-
-<!--
-2025-02-04 [a051e71e2] Add data for WAL in pg_stat_io and backend statistics
-2025-02-20 [4538bd3f1] doc: Add details about object "wal" in pg_stat_io
-2025-03-06 [7f7f324eb] Add more monitoring data for WAL writes in the WAL recei
--->
-
- <listitem>
- <para>
- Add <acronym>WAL</acronym> I/O activity rows to
- <structname>pg_stat_io</structname> (Nazir Bilal Yavuz, Bertrand
- Drouvot, Michael Paquier)
- <ulink url="&commit_baseurl;a051e71e2">§</ulink>
- <ulink url="&commit_baseurl;4538bd3f1">§</ulink>
- <ulink url="&commit_baseurl;7f7f324eb">§</ulink>
- </para>
-
- <para>
- This includes <acronym>WAL</acronym> receiver activity and a wait
- event for such writes.
- </para>
-
- </listitem>
-
-<!--
-2025-02-26 [6c349d83b] Re-add GUC track_wal_io_timing
--->
-
- <listitem>
- <para>
- Change server variable <xref linkend="guc-track-wal-io-timing"/>
- to control tracking <acronym>WAL</acronym> timing
- in <structname>pg_stat_io</structname> instead of <link
- linkend="pg-stat-wal-view"><structname>pg_stat_wal</structname></link>
- (Bertrand Drouvot)
- <ulink url="&commit_baseurl;6c349d83b">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-24 [2421e9a51] Remove read/sync fields from pg_stat_wal and GUC track_w
-2025-02-26 [6c349d83b] Re-add GUC track_wal_io_timing
--->
-
- <listitem>
- <para>
- Remove read/sync columns from <structname>pg_stat_wal</structname>
- (Bertrand Drouvot)
- <ulink url="&commit_baseurl;2421e9a51">§</ulink>
- <ulink url="&commit_baseurl;6c349d83b">§</ulink>
- </para>
-
- <para>
- This removes columns <structfield>wal_write</structfield>,
- <structfield>wal_sync</structfield>,
- <structfield>wal_write_time</structfield>, and
- <structfield>wal_sync_time</structfield>.
- </para>
- </listitem>
-
-<!--
-2025-03-11 [76def4cdd] Add WAL data to backend statistics
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="pg-stat-get-backend-wal"><function>pg_stat_get_backend_wal()</function></link>
- to return per-backend <acronym>WAL</acronym> statistics (Bertrand
- Drouvot)
- <ulink url="&commit_baseurl;76def4cdd">§</ulink>
- </para>
-
- <para>
- Per-backend <acronym>WAL</acronym>
- statistics can be cleared via <link
- linkend="monitoring-stats-funcs-table"><function>pg_stat_reset_backend_stats()</function></link>.
- </para>
- </listitem>
-
-<!--
-2024-10-11 [4e1fad378] Add pg_ls_summariesdir().
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="functions-admin-genfile-table"><function>pg_ls_summariesdir()</function></link>
- to specifically list the contents of <link
- linkend="storage-file-layout"><envar>PGDATA</envar></link>/<link
- linkend="guc-wal-summary-keep-time"><filename>pg_wal/summaries</filename></link>
- (Yushi Ogiwara)
- <ulink url="&commit_baseurl;4e1fad378">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-09-30 [559efce1d] Add num_done counter to the pg_stat_checkpointer view.
--->
-
- <listitem>
- <para>
- Add column <link
- linkend="monitoring-pg-stat-checkpointer-view"><structname>pg_stat_checkpointer</structname></link>.<structfield>num_done</structfield>
- to report the number of completed checkpoints (Anton A. Melnikov)
- <ulink url="&commit_baseurl;559efce1d">§</ulink>
- </para>
-
- <para>
- Columns <structfield>num_timed</structfield> and
- <structfield>num_requested</structfield> count both completed and
- skipped checkpoints.
- </para>
- </listitem>
-
-<!--
-2024-10-02 [17cc5f666] Fix inconsistent reporting of checkpointer stats.
--->
-
- <listitem>
- <para>
- Add column
- <structname>pg_stat_checkpointer</structname>.<structfield>slru_written</structfield>
- to report <acronym>SLRU</acronym> buffers written (Nitin Jadhav)
- <ulink url="&commit_baseurl;17cc5f666">§</ulink>
- </para>
-
- <para>
- Also, modify the checkpoint server log message to report separate
- shared buffer and <acronym>SLRU</acronym> buffer values.
- </para>
- </listitem>
-
-<!--
-2024-11-11 [e7a9496de] Add two attributes to pg_stat_database for parallel work
--->
-
- <listitem>
- <para>
- Add columns to <link
- linkend="monitoring-pg-stat-database-view"><structname>pg_stat_database</structname></link>
- to report parallel worker activity (Benoit Lobréau)
- <ulink url="&commit_baseurl;e7a9496de">§</ulink>
- </para>
-
- <para>
- The new columns are
- <structfield>parallel_workers_to_launch</structfield> and
- <structfield>parallel_workers_launched</structfield>.
- </para>
- </listitem>
-
-<!--
-2025-03-18 [62d712ecf] Introduce squashing of constant lists in query jumbling
-2025-03-27 [9fbd53dea] Remove the query_id_squash_values GUC
--->
-
- <listitem>
- <para>
- Have <link linkend="guc-compute-query-id">query id</link> computation
- of arrays consider only the first and last array elements (Dmitry
- Dolgov, Sami Imseih)
- <ulink url="&commit_baseurl;62d712ecf">§</ulink>
- <ulink url="&commit_baseurl;9fbd53dea">§</ulink>
- </para>
-
- <para>
- Jumbling is used by <xref linkend="pgstatstatements"/>.
- </para>
- </listitem>
-
-<!--
-2025-03-26 [787514b30] Use relation name instead of OID in query jumbling for R
--->
-
- <listitem>
- <para>
- Adjust query id computations to group together queries using the
- same relation name (Michael Paquier, Sami Imseih)
- <ulink url="&commit_baseurl;787514b30">§</ulink>
- </para>
-
- <para>
- This is true even if the tables in different schemas have different
- column names.
- </para>
- </listitem>
-
-<!--
-2024-07-01 [12227a1d5] Add context type field to pg_backend_memory_contexts
--->
-
- <listitem>
- <para>
- Add column <link
- linkend="view-pg-backend-memory-contexts"><structname>pg_backend_memory_contexts</structname></link>.<structfield>type</structfield>
- to report the type of memory context (David Rowley)
- <ulink url="&commit_baseurl;12227a1d5">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-25 [32d3ed816] Add path column to pg_backend_memory_contexts view
--->
-
- <listitem>
- <para>
- Add column
- <structname>pg_backend_memory_contexts</structname>.<structfield>path</structfield>
- to show memory context parents (Melih Mutlu)
- <ulink url="&commit_baseurl;32d3ed816">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-privileges">
- <title>Privileges</title>
-
- <itemizedlist>
-
-<!--
-2024-07-04 [4564f1ceb] Add pg_get_acl() to get the ACL for a database object
-2024-07-10 [d898665bf] Extend pg_get_acl() to handle sub-object IDs
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="functions-info-object-table"><function>pg_get_acl()</function></link>
- to retrieve database access control details (Joel Jacobson)
- <ulink url="&commit_baseurl;4564f1ceb">§</ulink>
- <ulink url="&commit_baseurl;d898665bf">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-09-12 [4eada203a] Add has_largeobject_privilege function.
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="functions-info-access-table"><function>has_largeobject_privilege()</function></link>
- to check large object privileges (Yugo Nagata)
- <ulink url="&commit_baseurl;4eada203a">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-04 [0d6c47766] Extend ALTER DEFAULT PRIVILEGES to define default privil
--->
-
- <listitem>
- <para>
- Allow <xref linkend="sql-alterdefaultprivileges"/> to define
- large object default privileges (Takatsuka Haruka, Yugo Nagata,
- Laurenz Albe)
- <ulink url="&commit_baseurl;0d6c47766">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-09 [ccd38024b] Introduce pg_signal_autovacuum_worker.
--->
-
- <listitem>
- <para>
- Add predefined role <link
- linkend="predefined-roles"><literal>pg_signal_autovacuum_worker</literal></link>
- (Kirill Reshke)
- <ulink url="&commit_baseurl;ccd38024b">§</ulink>
- </para>
-
- <para>
- This allows sending signals to autovacuum workers.
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-server-config">
- <title>Server Configuration</title>
-
- <itemizedlist>
-
-<!--
-2025-02-20 [b3f0be788] Add support for OAUTHBEARER SASL mechanism
--->
-
- <listitem>
- <para>
- Add support for the <link linkend="auth-oauth">OAuth authentication
- method</link> (Jacob Champion, Daniel Gustafsson, Thomas Munro)
- <ulink url="&commit_baseurl;b3f0be788">§</ulink>
- </para>
-
- <para>
- This adds an <literal>oauth</literal> authentication method to <link
- linkend="auth-pg-hba-conf"><filename>pg_hba.conf</filename></link>,
- libpq OAuth options, a server variable <xref
- linkend="guc-oauth-validator-libraries"/> to load
- token validation libraries, and a configure flag <link
- linkend="configure-option-with-libcurl"><option>--with-libcurl</option></link>
- to add the required compile-time libraries.
- </para>
- </listitem>
-
-<!--
-2024-10-24 [45188c2ea] Support configuring TLSv1.3 cipher suites
--->
-
- <listitem>
- <para>
- Add server variable <xref linkend="guc-ssl-tls13-ciphers"/> to allow
- specification of multiple colon-separated TLSv1.3 cipher suites
- (Erica Zhang, Daniel Gustafsson)
- <ulink url="&commit_baseurl;45188c2ea">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-18 [daa02c6bd] Add X25519 to the default set of curves
--->
-
- <listitem>
- <para>
- Change server variable <xref linkend="guc-ssl-groups"/>'s default
- to include elliptic curve X25519 (Daniel Gustafsson, Jacob Champion)
- <ulink url="&commit_baseurl;daa02c6bd">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-10-24 [3d1ef3a15] Support configuring multiple ECDH curves
--->
-
- <listitem>
- <para>
- Rename server variable <varname>ssl_ecdh_curve</varname> to <xref
- linkend="guc-ssl-groups"/> and allow multiple colon-separated
- <acronym>ECDH</acronym> curves to be specified (Erica Zhang,
- Daniel Gustafsson)
- <ulink url="&commit_baseurl;3d1ef3a15">§</ulink>
- </para>
-
- <para>
- The previous name still works.
- </para>
- </listitem>
-
-<!--
-2025-04-02 [a460251f0] Make cancel request keys longer
-2024-07-29 [9d9b9d46f] Move cancel key generation to after forking the backend
--->
-
- <listitem>
- <para>
- Make <link linkend="functions-admin-signal-table">cancel request
- keys</link> 256 bits (Heikki Linnakangas, Jelte Fennema-Nio)
- <ulink url="&commit_baseurl;a460251f0">§</ulink>
- <ulink url="&commit_baseurl;9d9b9d46f">§</ulink>
- </para>
-
- <para>
- This is only possible when the server and client support wire
- protocol version 3.2, introduced in this release.
- </para>
- </listitem>
-
-<!--
-2025-01-06 [c758119e5] Allow changing autovacuum_max_workers without restarting
--->
-
- <listitem>
- <para>
- Add server variable <xref linkend="guc-autovacuum-worker-slots"/>
- to specify the maximum number of background workers (Nathan Bossart)
- <ulink url="&commit_baseurl;c758119e5">§</ulink>
- </para>
-
- <para>
- With this variable set, <xref linkend="guc-autovacuum-max-workers"/>
- can be adjusted at runtime up to this maximum without a server
- restart.
- </para>
- </listitem>
-
-<!--
-2025-02-05 [306dc520b] Introduce autovacuum_vacuum_max_threshold.
--->
-
- <listitem>
- <para>
- Allow specification of the fixed number of dead tuples that will
- trigger an <link linkend="autovacuum">autovacuum</link> (Nathan
- Bossart, Frédéric Yhuel)
- <ulink url="&commit_baseurl;306dc520b">§</ulink>
- </para>
-
- <para>
- The server variable is <xref
- linkend="guc-autovacuum-vacuum-max-threshold"/>. Percentages are
- still used for triggering.
- </para>
- </listitem>
-
-<!--
-2025-03-24 [adb5f85fa] Redefine max_files_per_process to control additionally o
--->
-
- <listitem>
- <para>
- Change server variable <xref linkend="guc-max-files-per-process"/>
- to limit only files opened by a backend (Andres Freund)
- <ulink url="&commit_baseurl;adb5f85fa">§</ulink>
- </para>
-
- <para>
- Previously files opened by the postmaster were also counted toward
- this limit.
- </para>
- </listitem>
-
-<!--
-2024-07-26 [0dcaea569] Introduce num_os_semaphores GUC.
--->
-
- <listitem>
- <para>
- Add server variable <xref linkend="guc-num-os-semaphores"/> to
- report the required number of semaphores (Nathan Bossart)
- <ulink url="&commit_baseurl;0dcaea569">§</ulink>
- </para>
-
- <para>
- This is useful for operating system configuration.
- </para>
- </listitem>
-
-<!--
-2025-03-19 [4f7f7b037] extension_control_path
-2025-05-02 [81eaaa2c4] Make "directory" setting work with extension_control_pat
--->
-
- <listitem>
- <para>
- Add server variable <xref linkend="guc-extension-control-path"/> to
- specify the location of extension control files (Peter Eisentraut,
- Matheus Alcantara)
- <ulink url="&commit_baseurl;4f7f7b037">§</ulink>
- <ulink url="&commit_baseurl;81eaaa2c4">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-replication">
- <title>Streaming Replication and Recovery</title>
-
- <itemizedlist>
-
-<!--
-2025-02-19 [ac0e33136] Invalidate inactive replication slots.
--->
-
- <listitem>
- <para>
- Allow inactive replication slots to be automatically invalided using
- server variable <xref linkend="guc-idle-replication-slot-timeout"/>
- (Nisha Moond, Bharath Rupireddy)
- <ulink url="&commit_baseurl;ac0e33136">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-21 [04ff636cb] Add GUC option to control maximum active replication ori
--->
-
- <listitem>
- <para>
- Add server variable <xref
- linkend="guc-max-active-replication-origins"/> to control the
- maximum active replication origins (Euler Taveira)
- <ulink url="&commit_baseurl;04ff636cb">§</ulink>
- </para>
-
- <para>
- This was previously controlled by <xref
- linkend="guc-max-replication-slots"/>, but this new setting allows
- a higher origin count in cases where fewer slots are required.
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-logical">
- <title><link linkend="logical-replication">Logical Replication</link></title>
-
- <itemizedlist>
-
-<!--
-2024-10-30 [745217a05] Replicate generated columns when specified in the column
-2024-11-07 [7054186c4] Replicate generated columns when 'publish_generated_colu
-2024-12-04 [87ce27de6] Ensure stored generated columns must be published when r
-2025-01-30 [6252b1eaf] Doc: Generated column replication.
--->
-
- <listitem>
- <para>
- Allow the values of <link
- linkend="sql-createtable-parms-generated-stored">generated
- columns</link> to be logically replicated (Shubham Khanna, Vignesh C,
- Zhijie Hou, Shlok Kyal, Peter Smith)
- <ulink url="&commit_baseurl;745217a05">§</ulink>
- <ulink url="&commit_baseurl;7054186c4">§</ulink>
- <ulink url="&commit_baseurl;87ce27de6">§</ulink>
- <ulink url="&commit_baseurl;6252b1eaf">§</ulink>
- </para>
-
- <para>
- If the publication specifies a column list, all specified
- columns, generated and non-generated, are published.
- Without a specified column list, publication option
- <literal>publish_generated_columns</literal> controls whether
- generated columns are published. Previously generated columns
- were not replicated and the subscriber had to compute
- the values if possible; this is particularly useful for
- non-<productname>PostgreSQL</productname> subscribers which lack
- such a capability.
- </para>
- </listitem>
-
-<!--
-2024-10-28 [1bf1140be] Change the default value of the streaming option to 'par
--->
-
- <listitem>
- <para>
- Change the default <xref linkend="sql-createsubscription"/> streaming
- option from <literal>off</literal> to <literal>parallel</literal>
- (Vignesh C)
- <ulink url="&commit_baseurl;1bf1140be">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-24 [1462aad2e] Allow altering of two_phase option of a SUBSCRIPTION.
-2025-04-03 [4868c96bc] Fix slot synchronization for two_phase enabled slots.
--->
-
- <listitem>
- <para>
- Allow <xref linkend="sql-altersubscription"/> to change the
- replication slot's two-phase commit behavior (Hayato Kuroda, Ajin
- Cherian, Amit Kapila, Zhijie Hou)
- <ulink url="&commit_baseurl;1462aad2e">§</ulink>
- <ulink url="&commit_baseurl;4868c96bc">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-20 [9758174e2] Log the conflicts while applying changes in logical repl
-2024-08-22 [edcb71258] Doc: explain the log format of logical replication confl
-2024-08-29 [640178c92] Rename the conflict types for the origin differ cases.
-2024-09-04 [6c2b5edec] Collect statistics about conflicts in logical replicatio
-2025-03-24 [73eba5004] Detect and Log multiple_unique_conflicts type conflict.
--->
-
- <listitem>
- <para>
- Log <link linkend="hot-standby-conflict">conflicts</link> while
- applying logical replication changes (Zhijie Hou, Nisha Moond)
- <ulink url="&commit_baseurl;9758174e2">§</ulink>
- <ulink url="&commit_baseurl;edcb71258">§</ulink>
- <ulink url="&commit_baseurl;640178c92">§</ulink>
- <ulink url="&commit_baseurl;6c2b5edec">§</ulink>
- <ulink url="&commit_baseurl;73eba5004">§</ulink>
- </para>
-
- <para>
- Also report in new columns of <link
- linkend="monitoring-pg-stat-subscription-stats"><structname>pg_stat_subscription_stats</structname></link>.
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- </sect3>
-
- <sect3 id="release-18-utility">
- <title>Utility Commands</title>
-
- <itemizedlist>
-
-<!--
-2025-02-07 [83ea6c540] Virtual generated columns
-2025-03-28 [cdc168ad4] Add support for not-null constraints on virtual generate
-2025-02-25 [1e4351af3] Expand virtual generated columns in the planner
--->
-
- <listitem>
- <para>
- Allow <link linkend="sql-createtable-parms-generated-stored">generated
- columns</link> to be virtual, and make them the default (Peter
- Eisentraut, Jian He, Richard Guo, Dean Rasheed)
- <ulink url="&commit_baseurl;83ea6c540">§</ulink>
- <ulink url="&commit_baseurl;cdc168ad4">§</ulink>
- <ulink url="&commit_baseurl;1e4351af3">§</ulink>
- </para>
-
- <para>
- Virtual generated columns generate their values when the columns
- are read, not written. The write behavior can still be specified
- via the <literal>STORED</literal> option.
- </para>
- </listitem>
-
-<!--
-2025-01-16 [80feb727c] Add OLD/NEW support to RETURNING in DML queries.
--->
-
- <listitem>
- <para>
- Add <literal>OLD</literal>/<literal>NEW</literal> support to <link
- linkend="dml-returning"><literal>RETURNING</literal></link> in
- <acronym>DML</acronym> queries (Dean Rasheed)
- <ulink url="&commit_baseurl;80feb727c">§</ulink>
- </para>
-
- <para>
- Previously <literal>RETURNING</literal> only returned new values for
- <xref linkend="sql-insert"/> and <xref linkend="sql-update"/>, and old
- values for <xref linkend="sql-delete"/>; <xref linkend="sql-merge"/>
- would return the appropriate value for the internal query executed.
- This new syntax allows the <literal>RETURNING</literal> list of
- <command>INSERT</command>/<command>UPDATE</command>/<command>DELETE</command>/<command>MERGE</command>
- to explicitly return old and new values by using the special aliases
- <literal>old</literal> and <literal>new</literal>. These aliases
- can be renamed to avoid identifier conflicts.
- </para>
- </listitem>
-
-<!--
-2025-02-19 [302cf1575] Add support for LIKE in CREATE FOREIGN TABLE
--->
-
- <listitem>
- <para>
- Allow foreign tables to be created like existing local tables
- (Zhang Mingli)
- <ulink url="&commit_baseurl;302cf1575">§</ulink>
- </para>
-
- <para>
- The syntax is <link linkend="sql-createforeigntable"><command>CREATE
- FOREIGN TABLE ... LIKE</command></link>.
- </para>
- </listitem>
-
-<!--
-2024-11-27 [85b7efa1c] Support LIKE with nondeterministic collations
--->
-
- <listitem>
- <para>
- Allow <link linkend="functions-like"><literal>LIKE</literal></link>
- with <link linkend="collation-nondeterministic">nondeterministic
- collations</link> (Peter Eisentraut)
- <ulink url="&commit_baseurl;85b7efa1c">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-21 [329304c90] Support text position search functions with nondetermini
--->
-
- <listitem>
- <para>
- Allow text position search functions with nondeterministic collations
- (Peter Eisentraut)
- <ulink url="&commit_baseurl;329304c90">§</ulink>
- </para>
-
- <para>
- These used to generate an error.
- </para>
- </listitem>
-
-<!--
-2025-01-17 [d3d098316] Support PG_UNICODE_FAST locale in the builtin collation
--->
-
- <listitem>
- <para>
- Add builtin collation provider <link
- linkend="locale-providers"><literal>PG_UNICODE_FAST</literal></link>
- (Jeff Davis)
- <ulink url="&commit_baseurl;d3d098316">§</ulink>
- </para>
-
- <para>
- This locale supports case mapping, but sorts in code point order,
- not natural language order.
- </para>
- </listitem>
-
-<!--
-2024-09-24 [62ddf7ee9] Add ONLY support for VACUUM and ANALYZE
--->
-
- <listitem>
- <para>
- Allow <xref linkend="sql-vacuum"/> and <xref linkend="sql-analyze"/>
- to process partitioned tables without processing their children
- (Michael Harris)
- <ulink url="&commit_baseurl;62ddf7ee9">§</ulink>
- </para>
-
- <para>
- This is enabled with the new <literal>ONLY</literal> option. This is
- useful since autovacuum does not process partitioned tables, just
- its children.
- </para>
- </listitem>
-
-<!--
-2024-10-11 [e839c8ecc] Create functions pg_set_relation_stats, pg_clear_relatio
-2024-10-24 [d32d14639] Add functions pg_restore_relation_stats(), pg_restore_at
-2025-03-25 [650ab8aaf] Stats: use schemaname/relname instead of regclass.
--->
-
- <listitem>
- <para>
- Add functions to modify per-relation and per-column optimizer
- statistics (Corey Huinker)
- <ulink url="&commit_baseurl;e839c8ecc">§</ulink>
- <ulink url="&commit_baseurl;d32d14639">§</ulink>
- <ulink url="&commit_baseurl;650ab8aaf">§</ulink>
- </para>
-
- <para>
- The functions are <link
- linkend="functions-admin-statsmod"><function>pg_restore_relation_stats()</function></link>,
- <function>pg_restore_attribute_stats()</function>,
- <function>pg_clear_relation_stats()</function>, and
- <function>pg_clear_attribute_stats()</function>.
- </para>
- </listitem>
-
-
-<!--
-2025-04-08 [f78ca6f3e] Introduce file_copy_method setting.
--->
-
- <listitem>
- <para>
- Add server variable <xref linkend="guc-file-copy-method"/> to control
- the file copying method (Nazir Bilal Yavuz)
- <ulink url="&commit_baseurl;f78ca6f3e">§</ulink>
- </para>
-
- <para>
- This controls whether <link
- linkend="sql-createdatabase"><command>CREATE DATABASE
- ... STRATEGY=FILE_COPY</command></link> and <link
- linkend="sql-alterdatabase"><command>ALTER DATABASE ... SET
- TABLESPACE</command></link> uses file copy or clone.
- </para>
- </listitem>
-
- </itemizedlist>
-
- <sect4 id="release-18-constraints">
- <title><link linkend="ddl-constraints">Constraints</link></title>
-
- <itemizedlist>
-
-<!--
-2024-09-17 [fc0438b4e] Add temporal PRIMARY KEY and UNIQUE constraints
--->
-
- <listitem>
- <para>
- Allow the specification of non-overlapping <link
- linkend="sql-createtable-parms-primary-key"><literal>PRIMARY
- KEY</literal></link> and <link
- linkend="sql-createtable-parms-unique"><literal>UNIQUE</literal></link>
- constraints (Paul A. Jungwirth)
- <ulink url="&commit_baseurl;fc0438b4e">§</ulink>
- </para>
-
- <para>
- This is specified by <literal>WITHOUT OVERLAPS</literal> on the
- last specified column.
- </para>
- </listitem>
-
-<!--
-2025-01-11 [ca87c415e] Add support for NOT ENFORCED in CHECK constraints
-2025-04-02 [eec0040c4] Add support for NOT ENFORCED in foreign key constraints
--->
-
- <listitem>
- <para>
- Allow <link
- linkend="sql-createtable-parms-check"><literal>CHECK</literal></link>
- and <link linkend="sql-createtable-parms-references">foreign
- key</link> constraints to be specified as <literal>NOT
- ENFORCED</literal> (Amul Sul)
- <ulink url="&commit_baseurl;ca87c415e">§</ulink>
- <ulink url="&commit_baseurl;eec0040c4">§</ulink>
- </para>
-
- <para>
- This also adds column <link
- linkend="catalog-pg-constraint"><structname>pg_constraint</structname></link>.<structfield>conenforced</structfield>.
- </para>
- </listitem>
-
-<!--
-2024-11-15 [9321d2fdf] Fix collation handling for foreign keys
--->
-
- <listitem>
- <para>
- Require <link
- linkend="sql-createtable-parms-references">primary/foreign key</link>
- relationships to use either deterministic collations or the the
- same nondeterministic collations (Peter Eisentraut)
- <ulink url="&commit_baseurl;9321d2fdf">§</ulink>
- </para>
-
- <para>
- The restore of a <xref linkend="app-pgdump"/>, also used by <xref
- linkend="pgupgrade"/>, will fail if these requirements are not met;
- schema changes must be made for these upgrade methods to succeed.
- </para>
- </listitem>
-
-<!--
-2024-11-08 [14e87ffa5] Add pg_constraint rows for not-null constraints
--->
-
- <listitem>
- <para>
- Store column <link
- linkend="sql-createtable-parms-not-null"><literal>NOT
- NULL</literal></link> specifications in <link
- linkend="catalog-pg-constraint"><structname>pg_constraint</structname></link>
- (Álvaro Herrera, Bernd Helmle)
- <ulink url="&commit_baseurl;14e87ffa5">§</ulink>
- </para>
-
- <para>
- This allows names to be specified for <literal>NOT NULL</literal>
- constraint. This also adds <literal>NOT NULL</literal> constraints
- to foreign tables and <literal>NOT NULL</literal> inheritance
- control to local tables.
- </para>
- </listitem>
-
-<!--
-2025-04-07 [a379061a2] Allow NOT NULL constraints to be added as NOT VALID
--->
-
- <listitem>
- <para>
- Allow <xref linkend="sql-altertable"/> to set the <literal>NOT
- VALID</literal> attribute of <literal>NOT NULL</literal> constraints
- (Rushabh Lathia, Jian He)
- <ulink url="&commit_baseurl;a379061a2">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-05 [f4e53e10b] Add ALTER TABLE ... ALTER CONSTRAINT ... SET [NO] INHERI
-2025-03-27 [4a02af8b1] Simplify syntax for ALTER TABLE ALTER CONSTRAINT NO INHE
--->
-
- <listitem>
- <para>
- Allow modification of the inheritability of <literal>NOT
- NULL</literal> constraints (Suraj Kharage, Álvaro Herrera)
- <ulink url="&commit_baseurl;f4e53e10b">§</ulink>
- <ulink url="&commit_baseurl;4a02af8b1">§</ulink>
- </para>
-
- <para>
- The syntax is <link linkend="sql-altertable"><command>ALTER TABLE
- ... ALTER CONSTRAINT ... [NO] INHERIT</command></link>.
- </para>
- </listitem>
-
-<!--
-2025-01-23 [b663b9436] Allow NOT VALID foreign key constraints on partitioned t
--->
-
- <listitem>
- <para>
- Allow <literal>NOT VALID</literal> foreign key constraints on
- partitioned tables (Amul Sul)
- <ulink url="&commit_baseurl;b663b9436">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-09-30 [4dea33ce7] Don't disallow DROP of constraints ONLY on partitioned t
--->
-
- <listitem>
- <para>
- Allow <link
- linkend="sql-altertable-desc-drop-constraint">dropping</link>
- of constraints <literal>ONLY</literal> on partitioned tables
- (Álvaro Herrera)
- <ulink url="&commit_baseurl;4dea33ce7">§</ulink>
- </para>
-
- <para>
- This was previously erroneously prohibited.
- </para>
- </listitem>
-
- </itemizedlist>
- </sect4>
-
- <sect4 id="release-18-copy">
- <title><xref linkend="sql-copy"/></title>
-
- <itemizedlist>
-
-<!--
-2024-10-08 [4ac2a9bec] Add REJECT_LIMIT option to the COPY command.
--->
-
- <listitem>
- <para>
- Add <literal>REJECT_LIMIT</literal> to control the number of invalid
- rows <command>COPY FROM</command> can ignore (Atsushi Torikoshi)
- <ulink url="&commit_baseurl;4ac2a9bec">§</ulink>
- </para>
-
- <para>
- This is available when <literal>ON_ERROR = 'ignore'</literal>.
- </para>
- </listitem>
-
-<!--
-2025-04-04 [534874fac] Allow "COPY table TO" command to copy rows from material
--->
-
- <listitem>
- <para>
- Allow <command>COPY TO</command> to copy rows from populated
- materialized views (Jian He)
- <ulink url="&commit_baseurl;534874fac">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-10-03 [e7834a1a2] Add LOG_VERBOSITY = 'silent' support to COPY command.
--->
-
- <listitem>
- <para>
- Add <command>COPY</command> <literal>LOG_VERBOSITY</literal> level
- <literal>silent</literal> to suppress log output of ignored rows
- (Atsushi Torikoshi)
- <ulink url="&commit_baseurl;e7834a1a2">§</ulink>
- </para>
-
- <para>
- This new level suppresses output for discarded input rows when
- <literal>on_error = 'ignore'</literal>.
- </para>
- </listitem>
-
-<!--
-2025-02-06 [401a6956f] Disallow COPY FREEZE on foreign tables.
--->
-
- <listitem>
- <para>
- Disallow <command>COPY FREEZE</command> on foreign tables (Nathan
- Bossart)
- <ulink url="&commit_baseurl;401a6956f">§</ulink>
- </para>
-
- <para>
- Previously, the <command>COPY</command> worked but the
- <literal>FREEZE</literal> was ignored, so disallow this command.
- </para>
- </listitem>
-
- </itemizedlist>
- </sect4>
-
- <sect4 id="release-18-explain">
- <title><xref linkend="sql-explain"/></title>
-
- <itemizedlist>
-
-<!--
-2024-12-11 [c2a4078eb] Enable BUFFERS with EXPLAIN ANALYZE by default
--->
-
- <listitem>
- <para>
- Automatically include <literal>BUFFERS</literal> output in
- <command>EXPLAIN ANALYZE</command> (Guillaume Lelarge, David Rowley)
- <ulink url="&commit_baseurl;c2a4078eb">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-17 [320545bfc] Add information about WAL buffers being full to EXPLAIN
--->
-
- <listitem>
- <para>
- Add full <acronym>WAL</acronym> buffer count to <command>EXPLAIN
- (WAL)</command> output (Bertrand Drouvot)
- <ulink url="&commit_baseurl;320545bfc">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-11 [0fbceae84] Show index search count in EXPLAIN ANALYZE, take 2.
--->
-
- <listitem>
- <para>
- In <command>EXPLAIN ANALYZE</command>, report the number of index
- lookups used per index scan node (Peter Geoghegan)
- <ulink url="&commit_baseurl;0fbceae84">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-21 [ddb17e387] Allow EXPLAIN to indicate fractional rows.
-2025-02-27 [95dbd827f] EXPLAIN: Always use two fractional digits for row counts
--->
-
- <listitem>
- <para>
- Modify <command>EXPLAIN</command> to output fractional row counts
- (Ibrar Ahmed, Ilia Evdokimov, Robert Haas)
- <ulink url="&commit_baseurl;ddb17e387">§</ulink>
- <ulink url="&commit_baseurl;95dbd827f">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-05 [1eff8279d] Add memory/disk usage for Material nodes in EXPLAIN
-2024-07-05 [53abb1e0e] Fix newly introduced issue in EXPLAIN for Materialize no
-2024-09-17 [95d6e9af0] Add memory/disk usage for Window aggregate nodes in EXPL
-2024-09-23 [40708acd6] Add memory/disk usage for more executor nodes.
--->
-
- <listitem>
- <para>
- Add memory and disk usage details to <literal>Material</literal>,
- <literal>Window Aggregate</literal>, and common table expression
- nodes to <command>EXPLAIN</command> output (David Rowley, Tatsuo
- Ishii)
- <ulink url="&commit_baseurl;1eff8279d">§</ulink>
- <ulink url="&commit_baseurl;53abb1e0e">§</ulink>
- <ulink url="&commit_baseurl;95d6e9af0">§</ulink>
- <ulink url="&commit_baseurl;40708acd6">§</ulink>
- </para>
- </listitem>
-
-
-<!--
-2025-03-11 [8b1b34254] Improve EXPLAIN's display of window functions.
--->
-
- <listitem>
- <para>
- Add details about window function arguments to
- <command>EXPLAIN</command> output (Tom Lane)
- <ulink url="&commit_baseurl;8b1b34254">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-09 [5a1e6df3b] Show Parallel Bitmap Heap Scan worker stats in EXPLAIN A
--->
-
- <listitem>
- <para>
- Add <literal>Parallel Bitmap Heap Scan</literal> worker cache
- statistics to <command>EXPLAIN ANALYZE</command> (David Geier,
- Heikki Linnakangas, Donghang Lin, Alena Rybakina, David Rowley)
- <ulink url="&commit_baseurl;5a1e6df3b">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-21 [c01743aa4] Show number of disabled nodes in EXPLAIN ANALYZE output.
-2024-10-11 [161320b4b] Adjust EXPLAIN's output for disabled nodes
-2024-10-29 [84b8fccbe] Doc: add detail about EXPLAIN's "Disabled" property
--->
-
- <listitem>
- <para>
- Indicate disabled nodes in <command>EXPLAIN ANALYZE</command> output
- (Robert Haas, David Rowley, Laurenz Albe)
- <ulink url="&commit_baseurl;c01743aa4">§</ulink>
- <ulink url="&commit_baseurl;161320b4b">§</ulink>
- <ulink url="&commit_baseurl;84b8fccbe">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- </sect3>
-
- <sect3 id="release-18-datatypes">
- <title>Data Types</title>
-
- <itemizedlist>
-
-<!--
-2025-01-23 [4e7f62bc3] Add support for Unicode case folding.
-2025-01-17 [286a365b9] Support Unicode full case mapping and conversion.
--->
-
- <listitem>
- <para>
- Improve <link linkend="collation-managing-standard">Unicode</link>
- full case mapping and conversion (Jeff Davis)
- <ulink url="&commit_baseurl;4e7f62bc3">§</ulink>
- <ulink url="&commit_baseurl;286a365b9">§</ulink>
- </para>
-
- <para>
- This adds the ability to do conditional and title case mapping,
- and case map single characters to multiple characters.
- </para>
- </listitem>
-
-<!--
-2025-01-24 [a5579a90a] Make jsonb casts to scalar types translate JSON null to
--->
-
- <listitem>
- <para>
- Allow <link linkend="datatype-json"><type>jsonb</type></link>
- <literal>null</literal> values to be cast to scalar types as
- <literal>NULL</literal> (Tom Lane)
- <ulink url="&commit_baseurl;a5579a90a">§</ulink>
- </para>
-
- <para>
- Previously such casts generated an error.
- </para>
- </listitem>
-
-<!--
-2025-03-05 [4603903d2] Allow json{b}_strip_nulls() to remove null array elements
--->
-
- <listitem>
- <para>
- Add optional parameter to <link
- linkend="functions-json-processing-table"><function>json{b}_strip_nulls</function></link>
- to allow removal of null array elements (Florents Tselai)
- <ulink url="&commit_baseurl;4603903d2">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-01 [6c12ae09f] Introduce a SQL-callable function array_sort(anyarray).
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="array-functions-table"><function>array_sort()</function></link>
- which sorts an array's first dimension (Junwang Zhao, Jian He)
- <ulink url="&commit_baseurl;6c12ae09f">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-11-01 [49d6c7d8d] Add SQL function array_reverse()
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="array-functions-table"><function>array_reverse()</function></link>
- which reverses an array's first dimension (Aleksander Alekseev)
- <ulink url="&commit_baseurl;49d6c7d8d">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-13 [0697b2390] Add reverse(bytea).
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="functions-string-other"><function>reverse()</function></link>
- to reverse bytea bytes (Aleksander Alekseev)
- <ulink url="&commit_baseurl;0697b2390">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-07 [6da469bad] Allow casting between bytea and integer types.
--->
-
- <listitem>
- <para>
- Allow casting between integer types and <link
- linkend="datatype-binary"><type>bytea</type></link> (Aleksander
- Alekseev)
- <ulink url="&commit_baseurl;6da469bad">§</ulink>
- </para>
-
- <para>
- The integer values are stored as <type>bytea</type> two's complement
- values.
- </para>
- </listitem>
-
-<!--
-2025-04-03 [82a46cca9] Update Unicode data to Unicode 16.0.0
--->
-
- <listitem>
- <para>
- Update Unicode data to <link
- linkend="collation-managing-standard">Unicode</link> 16.0.0 (Peter
- Eisentraut)
- <ulink url="&commit_baseurl;82a46cca9">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-18 [b464e51ab] Update to latest Snowball sources.
--->
-
- <listitem>
- <para>
- Add full text search <link
- linkend="textsearch-snowball-dictionary">stemming</link> for Estonian
- (Tom Lane)
- <ulink url="&commit_baseurl;b464e51ab">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-09-24 [cd838e200] Neaten up our choices of SQLSTATEs for XML-related error
--->
-
- <listitem>
- <para>
- Improve the <link linkend="datatype-xml"><type>XML</type></link>
- error codes to more closely match the <acronym>SQL</acronym> standard
- (Tom Lane)
- <ulink url="&commit_baseurl;cd838e200">§</ulink>
- </para>
-
- <para>
- These errors are reported via <link
- linkend="errcodes-appendix"><literal>SQLSTATE</literal></link>.
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect3>
-
- <sect3 id="release-18-functions">
- <title>Functions</title>
-
- <itemizedlist>
-
-<!--
-2025-01-24 [bfc599206] Add SQL function CASEFOLD().
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="functions-string-other"><function>casefold()</function></link>
- to allow for more sophisticated case-insensitive matching (Jeff Davis)
- <ulink url="&commit_baseurl;bfc599206">§</ulink>
- </para>
-
- <para>
- This allows more accurate comparisons, i.e., a character can have
- multiple upper or lower case equivalents, or upper or lower case
- conversion changes the number of characters.
- </para>
- </listitem>
-
-<!--
-2024-07-11 [a0f1fce80] Add min and max aggregates for composite types (records)
-2024-10-08 [2d24fd942] Add min and max aggregates for bytea type.
--->
-
- <listitem>
- <para>
- Allow <link
- linkend="functions-aggregate-table"><function>MIN()</function></link>/<link
- linkend="functions-aggregate-table"><function>MAX()</function></link>
- aggregates on arrays and composite types (Aleksander Alekseev,
- Marat Buharov)
- <ulink url="&commit_baseurl;a0f1fce80">§</ulink>
- <ulink url="&commit_baseurl;2d24fd942">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-16 [6be39d77a] Fix extraction of week and quarter fields from intervals
--->
-
- <listitem>
- <para>
- Add a <literal>WEEK</literal> option to <link
- linkend="functions-datetime-extract"><function>EXTRACT()</function></link>
- (Tom Lane)
- <ulink url="&commit_baseurl;6be39d77a">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-16 [6be39d77a] Fix extraction of week and quarter fields from intervals
--->
-
- <listitem>
- <para>
- Improve the output <literal>EXTRACT(QUARTER ...)</literal> for
- negative values (Tom Lane)
- <ulink url="&commit_baseurl;6be39d77a">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-01-22 [172e6b3ad] Support RN (roman-numeral format) in to_number().
--->
-
- <listitem>
- <para>
- Add roman numeral support to <link
- linkend="functions-formatting-table"><function>to_number()</function></link>
- (Hunaid Sohail)
- <ulink url="&commit_baseurl;172e6b3ad">§</ulink>
- </para>
-
- <para>
- This is accessed via the <literal>RN</literal> pattern.
- </para>
- </listitem>
-
-<!--
-2024-12-11 [78c5e141e] Add UUID version 7 generation function.
--->
-
- <listitem>
- <para>
- Add <link linkend="datatype-uuid"><type>UUID</type></link>
- version 7 generation function <link
- linkend="func_uuid_gen_table"><function>uuidv7()</function></link>
- (Andrey Borodin)
- <ulink url="&commit_baseurl;78c5e141e">§</ulink>
- </para>
-
- <para>
- This <type>UUID</type> value is
- temporally sortable. Function alias <link
- linkend="func_uuid_gen_table"><function>uuidv4()</function></link>
- has been added to explicitly generate version 4 UUIDs.
- </para>
- </listitem>
-
-<!--
-2024-08-12 [760162fed] Add user-callable CRC functions.
--->
-
- <listitem>
- <para>
- Add functions <link
- linkend="functions-binarystring-other"><function>crc32()</function></link>
- and <link
- linkend="functions-binarystring-other"><function>crc32c()</function></link>
- to compute <acronym>CRC</acronym> values (Aleksander Alekseev)
- <ulink url="&commit_baseurl;760162fed">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-26 [a3b6dfd41] Add support for gamma() and lgamma() functions.
--->
-
- <listitem>
- <para>
- Add math functions <link
- linkend="functions-math-func-table"><function>gamma()</function></link>
- and <link
- linkend="functions-math-func-table"><function>lgamma()</function></link>
- (Dean Rasheed)
- <ulink url="&commit_baseurl;a3b6dfd41">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-03 [246dedc5d] Allow => syntax for named cursor arguments in plpgsql.
--->
-
- <listitem>
- <para>
- Allow <literal>=></literal> syntax for named cursor arguments in
- <link linkend="plpgsql">PL/pgSQL</link> (Pavel Stehule)
- <ulink url="&commit_baseurl;246dedc5d">§</ulink>
- </para>
-
- <para>
- We previously only accepted <literal>:=</literal>.
- </para>
- </listitem>
-
-<!--
-2024-07-25 [580f8727c] Add argument names to the regexp_XXX functions.
--->
-
- <listitem>
- <para>
- Allow <link
- linkend="functions-posix-regexp"><function>regexp_match[es]()</function></link>/<link
- linkend="functions-posix-regexp"><function>regexp_like()</function></link>/<link
- linkend="functions-posix-regexp"><function>regexp_replace()</function></link>/<link
- linkend="functions-posix-regexp"><function>regexp_count()</function></link>/<link
- linkend="functions-posix-regexp"><function>regexp_instr()</function></link>/<link
- linkend="functions-posix-regexp"><function>regexp_substr()</function></link>/<link
- linkend="functions-posix-regexp"><function>regexp_split_to_table()</function></link>/<link
- linkend="functions-posix-regexp"><function>regexp_split_to_array()</function></link>
- to use named arguments (Jian He)
- <ulink url="&commit_baseurl;580f8727c">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect3>
-
- <sect3 id="release-18-libpq">
- <title><xref linkend="libpq"/></title>
-
- <itemizedlist>
-
-<!--
-2024-09-09 [cdb6b0fdb] Add PQfullProtocolVersion() to surface the precise proto
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="libpq-PQfullProtocolVersion"><function>PQfullProtocolVersion()</function></link>
- to report the full, including minor, protocol version number (Jacob
- Champion, Jelte Fennema-Nio)
- <ulink url="&commit_baseurl;cdb6b0fdb">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-02 [285613c60] libpq: Add min/max_protocol_version connection options
-2025-04-02 [507034910] libpq: Handle NegotiateProtocolVersion message different
--->
-
- <listitem>
- <para>
- Add libpq connection <link
- linkend="libpq-connect-ssl-max-protocol-version">parameters</link>
- and <link linkend="libpq-envars">environment variables</link> to
- specify the minimum and maximum acceptable protocol version for
- connections (Jelte Fennema-Nio)
- <ulink url="&commit_baseurl;285613c60">§</ulink>
- <ulink url="&commit_baseurl;507034910">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-12-18 [4b99fed75] libpq: Add service name to PGconn and PQservice()
--->
-
- <listitem>
- <para>
- Add libpq function <link
- linkend="libpq-PQservice"><function>PQservice()</function></link>
- to return the connection service name (Michael Banck)
- <ulink url="&commit_baseurl;4b99fed75">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-19 [28a1121fd] Mark search_path as GUC_REPORT
-2024-08-19 [0d06a7eac] Document that search_path is reported by the server
--->
-
- <listitem>
- <para>
- Report <xref linkend="guc-search-path"/> changes to the client
- (Alexander Kukushkin, Jelte Fennema-Nio, Tomas Vondra)
- <ulink url="&commit_baseurl;28a1121fd">§</ulink>
- <ulink url="&commit_baseurl;0d06a7eac">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-12 [ea92f3a0a] libpq: Trace frontend authentication challenges
-2024-08-14 [a5c6b8f22] libpq: Trace responses to SSLRequest and GSSENCRequest
-2024-08-16 [b8b3f861f] libpq: Trace all messages received from the server
-2025-02-24 [e87c14b19] libpq: Trace all NegotiateProtocolVersion fields
-2024-08-09 [7adec2d5f] libpq: Trace StartupMessage/SSLRequest/GSSENCRequest cor
--->
-
- <listitem>
- <para>
- Add <link
- linkend="libpq-PQtrace"><function>PQtrace()</function></link> output
- for all message types, including authentication (Jelte Fennema-Nio)
- <ulink url="&commit_baseurl;ea92f3a0a">§</ulink>
- <ulink url="&commit_baseurl;a5c6b8f22">§</ulink>
- <ulink url="&commit_baseurl;b8b3f861f">§</ulink>
- <ulink url="&commit_baseurl;e87c14b19">§</ulink>
- <ulink url="&commit_baseurl;7adec2d5f">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-03 [2da74d8d6] libpq: Add support for dumping SSL key material to file
--->
-
- <listitem>
- <para>
- Add libpq connection parameter <link
- linkend="libpq-connect-sslkeylogfile"><varname>sslkeylogfile</varname></link>
- which dumps out <acronym>SSL</acronym> key material (Abhishek Chanda,
- Daniel Gustafsson)
- <ulink url="&commit_baseurl;2da74d8d6">§</ulink>
- </para>
-
- <para>
- This is useful for debugging.
- </para>
- </listitem>
-
-<!--
-2025-03-25 [3c86223c9] libpq: Deprecate pg_int64.
--->
-
- <listitem>
- <para>
- Modify some libpq function signatures to use
- <literal>int64_t</literal> (Thomas Munro)
- <ulink url="&commit_baseurl;3c86223c9">§</ulink>
- </para>
-
- <para>
- These previously used <literal>pg_int64</literal>, which is now
- deprecated.
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect3>
-
- <sect3 id="release-18-psql">
- <title><xref linkend="app-psql"/></title>
-
- <itemizedlist>
-
-<!--
-2024-08-22 [d55322b0d] psql: Add more meta-commands able to use the extended pr
--->
-
- <listitem>
- <para>
- Allow <application>psql</application> to parse, bind, and close
- named prepared statements (Anthonin Bonnefoy, Michael Paquier)
- <ulink url="&commit_baseurl;d55322b0d">§</ulink>
- </para>
-
- <para>
- This is accomplished with new commands <link
- linkend="app-psql-meta-command-parse"><literal>\parse</literal></link>,
- <link
- linkend="app-psql-meta-command-bind-named"><literal>\bind_named</literal></link>,
- and <link
- linkend="app-psql-meta-command-close-prepared"><literal>\close_prepared</literal></link>.
- </para>
- </listitem>
-
-<!--
-2025-02-21 [41625ab8e] psql: Add support for pipelines
-2025-03-18 [17caf6644] psql: Add \sendpipeline to send query buffers while in a
-2025-03-19 [2cce0fe44] psql: Allow queries terminated by semicolons while in pi
--->
-
- <listitem>
- <para>
- Add <application>psql</application> backslash commands to allowing
- issuance of pipeline queries (Anthonin Bonnefoy)
- <ulink url="&commit_baseurl;41625ab8e">§</ulink>
- <ulink url="&commit_baseurl;17caf6644">§</ulink>
- <ulink url="&commit_baseurl;2cce0fe44">§</ulink>
- </para>
-
- <para>
- The new commands are <link
- linkend="app-psql-meta-command-pipeline"><literal>\startpipeline</literal></link>,
- <literal>\syncpipeline</literal>, <literal>\sendpipeline</literal>,
- <literal>\endpipeline</literal>, <literal>\flushrequest</literal>,
- <literal>\flush</literal>, and <literal>\getresults</literal>.
- </para>
- </listitem>
-
-<!--
-2025-02-25 [3ce357584] psql: Add pipeline status to prompt and some state varia
--->
-
- <listitem>
- <para>
- Allow adding pipeline status to the <application>psql</application>
- prompt and add related state variables (Anthonin Bonnefoy)
- <ulink url="&commit_baseurl;3ce357584">§</ulink>
- </para>
-
- <para>
- The new prompt character is <literal>%P</literal> and
- the new <application>psql</application> variables are <link
- linkend="app-psql-variables-pipeline-sync-count"><literal>PIPELINE_SYNC_COUNT</literal></link>,
- <link
- linkend="app-psql-variables-pipeline-command-count"><literal>PIPELINE_COMMAND_COUNT</literal></link>,
- and <link
- linkend="app-psql-variables-pipeline-result-count"><literal>PIPELINE_RESULT_COUNT</literal></link>.
- </para>
- </listitem>
-
-<!--
-2024-12-18 [477728b5d] psql: Add more information about service name
--->
-
- <listitem>
- <para>
- Allow adding the connection service name to the
- <application>psql</application> prompt or access it via
- <application>psql</application> variable (Michael Banck)
- <ulink url="&commit_baseurl;477728b5d">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-01-14 [00f4c2959] psql: Add option to use expanded mode to all list comman
--->
-
- <listitem>
- <para>
- Add <application>psql</application> option to use expanded mode on
- all list commands (Dean Rasheed)
- <ulink url="&commit_baseurl;00f4c2959">§</ulink>
- </para>
-
- <para>
- Adding backslash suffix <literal>x</literal> enables this.
- </para>
- </listitem>
-
-<!--
-2025-02-22 [bba2fbc62] Change \conninfo to use tabular format
--->
-
- <listitem>
- <para>
- Change <application>psql</application>'s <xref
- linkend="app-psql-meta-command-conninfo"/> to use tabular format
- and include more information (Álvaro Herrera, Maiquel Grassi,
- Hunaid Sohail)
- <ulink url="&commit_baseurl;bba2fbc62">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-01-14 [2355e5111] psql: Add leakproof indicator to \df+, \do+, \dAo+, and
--->
-
- <listitem>
- <para>
- Add function's leakproof indicator
- to <application>psql</application>'s <link
- linkend="app-psql-meta-command-df-lc"><literal>\df+</literal></link>,
- <literal>\do+</literal>, <literal>\dAo+</literal>, and
- <literal>\dC+</literal> outputs (Yugo Nagata)
- <ulink url="&commit_baseurl;2355e5111">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-02 [978f38c77] Add information about access method for partitioned rela
--->
-
- <listitem>
- <para>
- Add access method details for partitioned relations in <link
- linkend="app-psql-meta-command-dp-uc"><literal>\dP+</literal></link>
- (Justin Pryzby)
- <ulink url="&commit_baseurl;978f38c77">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-24 [d696406a9] psql: show default extension version in \dx output
--->
-
- <listitem>
- <para>
- Add <literal>default_version</literal>
- to the <application>psql</application> <link
- linkend="app-psql-meta-command-dx-lc"><literal>\dx</literal></link>
- extension output (Magnus Hagander)
- <ulink url="&commit_baseurl;d696406a9">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-25 [1a759c832] psql: Make default \watch interval configurable
--->
-
- <listitem>
- <para>
- Add <application>psql</application> variable <xref
- linkend="app-psql-variables-watch-interval"/> to set the default <link
- linkend="app-psql-meta-command-watch"><literal>\watch</literal></link>
- wait time (Daniel Gustafsson)
- <ulink url="&commit_baseurl;1a759c832">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect3>
-
- <sect3 id="release-18-server-apps">
- <title>Server Applications</title>
-
- <itemizedlist>
-
-<!--
-2024-10-01 [983a588e0] initdb: Add new option "- -no-data-checksums"
-2024-10-16 [04bec894a] initdb: Change default to using data checksums.
--->
-
- <listitem>
- <para>
- Change <xref linkend="app-initdb"/> to default to enabling checksums
- (Greg Sabino Mullane)
- <ulink url="&commit_baseurl;983a588e0">§</ulink>
- <ulink url="&commit_baseurl;04bec894a">§</ulink>
- </para>
-
- <para>
- The new <application>initdb</application> option
- <option>--no-data-checksums</option> disables checksums.
- </para>
- </listitem>
-
-<!--
-2025-03-25 [cf131fa94] initdb: Add - -no-sync-data-files.
--->
-
- <listitem>
- <para>
- Add <application>initdb</application> option
- <option>--no-sync-data-files</option> to avoid syncing heap/index
- files (Nathan Bossart)
- <ulink url="&commit_baseurl;cf131fa94">§</ulink>
- </para>
-
- <para>
- <application>initdb</application> option <option>--no-sync</option>
- is still available to avoid syncing any files.
- </para>
- </listitem>
-
-<!--
-2025-03-18 [edba754f0] vacuumdb: Add option for analyzing only relations missin
-2025-04-30 [987910502] vacuumdb: Don't skip empty relations in - -missing-stats-
--->
-
- <listitem>
- <para>
- Add <xref linkend="app-vacuumdb"/> option
- <option>--missing-stats-only</option> to compute only missing
- optimizer statistics (Corey Huinker, Nathan Bossart)
- <ulink url="&commit_baseurl;edba754f0">§</ulink>
- <ulink url="&commit_baseurl;987910502">§</ulink>
- </para>
-
- <para>
- This option can only be used by <option>--analyze-only</option>
- and <option>--analyze-in-stages</option>.
- </para>
- </listitem>
-
-<!--
-2025-03-17 [99aeb8470] pg_combinebackup: Add -k, - -link option.
--->
-
- <listitem>
- <para>
- Add <xref linkend="app-pgcombinebackup"/> option
- <option>-k</option>/<option>--link</option> to enable hard linking
- (Israel Barth Rubio, Robert Haas)
- <ulink url="&commit_baseurl;99aeb8470">§</ulink>
- </para>
-
- <para>
- Only some files can be hard linked. This should not be used if the
- backups will be used independently.
- </para>
- </listitem>
-
-<!--
-2024-09-27 [8dfd31290] pg_verifybackup: Verify tar-format backups.
--->
-
- <listitem>
- <para>
- Allow <xref linkend="app-pgverifybackup"/> to verify tar-format
- backups (Amul Sul)
- <ulink url="&commit_baseurl;8dfd31290">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-12 [4ecdd4110] pg_rewind: Add dbname to primary_conninfo when using - -w
--->
-
- <listitem>
- <para>
- If <xref linkend="app-pgrewind"/>'s <option>--source-server</option>
- specifies a database name, use it in
- <option>--write-recovery-conf</option> output (Masahiko Sawada)
- <ulink url="&commit_baseurl;4ecdd4110">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-21 [30666d185] pg_resetwal: Add - -char-signedness option to change the
--->
-
- <listitem>
- <para>
- Add <xref linkend="app-pgresetwal"/> option
- <option>--char-signedness</option> to change the default
- <type>char</type> signedness (Masahiko Sawada)
- <ulink url="&commit_baseurl;30666d185">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
-
- <sect4 id="release-18-pgdump">
- <title><link
- linkend="app-pgdump"><application>pg_dump</application></link>/<link
- linkend="app-pg-dumpall"><application>pg_dumpall</application></link>/<link
- linkend="app-pgrestore"><application>pg_restore</application></link></title>
-
- <itemizedlist>
-
-<!--
-2025-04-04 [1495eff7b] Non text modes for pg_dumpall, correspondingly change pg
--->
-
- <listitem>
- <para>
- Allow <xref linkend="app-pg-dumpall"/> to dump in the same output
- formats as <application>pg_dump</application> supports (Mahendra
- Singh Thalor, Andrew Dunstan)
- <ulink url="&commit_baseurl;1495eff7b">§</ulink>
- </para>
-
- <para>
- Also modify <xref linkend="app-pgrestore"/> to handle such dumps.
- Previously <application>pg_dumpall</application> only supported
- text format.
- </para>
- </listitem>
-
-<!--
-2025-03-25 [bde2fb797] Add pg_dump - -with-{schema|data|statistics} options.
--->
-
- <listitem>
- <para>
- Add <xref linkend="app-pgdump"/> options
- <option>--with-schema</option>, <option>--with-data</option>,
- and <option>--with-statistics</option> (Jeff Davis)
- <ulink url="&commit_baseurl;bde2fb797">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-25 [9c49f0e8c] pg_dump: Add - -sequence-data.
-2025-05-07 [acea3fc49] pg_dumpall: Add - -sequence-data.
--->
-
- <listitem>
- <para>
- Add <application>pg_dump</application> and <xref
- linkend="app-pg-dumpall"/> option <option>--sequence-data</option> to
- dump sequence data that would normally be excluded (Nathan Bossart)
- <ulink url="&commit_baseurl;9c49f0e8c">§</ulink>
- <ulink url="&commit_baseurl;acea3fc49">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-20 [1fd1bd871] Transfer statistics during pg_upgrade.
--->
-
- <listitem>
- <para>
- Add <xref linkend="app-pgdump"/>, <xref linkend="app-pg-dumpall"/>,
- and <xref linkend="app-pgrestore"/> options
- <option>--statistics-only</option>, <option>--no-statistics</option>,
- <option>--no-data</option>, and <option>--no-schema</option>
- (Corey Huinker, Jeff Davis)
- <ulink url="&commit_baseurl;1fd1bd871">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-16 [cd3c45125] pg_dump, pg_dumpall, pg_restore: Add - -no-policies optio
--->
-
- <listitem>
- <para>
- Add option <option>--no-policies</option> to disable row level
- security policy processing in <xref linkend="app-pgdump"/>,
- <xref linkend="app-pg-dumpall"/>, <xref linkend="app-pgrestore"/>
- (Nikolay Samokhvalov)
- <ulink url="&commit_baseurl;cd3c45125">§</ulink>
- </para>
-
- <para>
- This is useful for migrating to systems with different policies.
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-pgupgrade">
- <title><xref linkend="pgupgrade"/></title>
-
- <itemizedlist>
-
-<!--
-2025-02-20 [1fd1bd871] Transfer statistics during pg_upgrade.
-2025-03-18 [c9d502eb6] Update guidance for running vacuumdb after pg_upgrade.
-2025-04-30 [d5f1b6a75] Further adjust guidance for running vacuumdb after pg_up
-2025-02-20 [1fd1bd871] Transfer statistics during pg_upgrade.
--->
-
- <listitem>
- <para>
- Allow <application>pg_upgrade</application> to preserve optimizer
- statistics (Corey Huinker, Jeff Davis, Nathan Bossart)
- <ulink url="&commit_baseurl;1fd1bd871">§</ulink>
- <ulink url="&commit_baseurl;c9d502eb6">§</ulink>
- <ulink url="&commit_baseurl;d5f1b6a75">§</ulink>
- <ulink url="&commit_baseurl;1fd1bd871">§</ulink>
- </para>
-
- <para>
- Extended statistics are not preserved. Also add
- <application>pg_upgrade</application> option
- <option>--no-statistics</option> to disable statistics preservation.
- </para>
- </listitem>
-
-<!--
-2024-09-16 [40e2e5e92] Introduce framework for parallelizing various pg_upgrade
-2024-09-16 [6d3d2e8e5] pg_upgrade: Parallelize retrieving relation information.
-2024-09-16 [7baa36de5] pg_upgrade: Parallelize subscription check.
-2024-09-16 [46cad8b31] pg_upgrade: Parallelize retrieving loadable libraries.
-2024-09-16 [6ab8f27bc] pg_upgrade: Parallelize retrieving extension updates.
-2024-09-16 [bbf83cab9] pg_upgrade: Parallelize data type checks.
-2024-09-16 [9db3018cf] pg_upgrade: Parallelize contrib/isn check.
-2024-09-16 [c34eabfbb] pg_upgrade: Parallelize postfix operator check.
-2024-09-16 [cf2f82a37] pg_upgrade: Parallelize incompatible polymorphics check.
-2024-09-16 [f93f5f7b9] pg_upgrade: Parallelize WITH OIDS check.
-2024-09-16 [c880cf258] pg_upgrade: Parallelize encoding conversion check.
--->
-
- <listitem>
- <para>
- Allow <application>pg_upgrade</application> to process database
- checks in parallel (Nathan Bossart)
- <ulink url="&commit_baseurl;40e2e5e92">§</ulink>
- <ulink url="&commit_baseurl;6d3d2e8e5">§</ulink>
- <ulink url="&commit_baseurl;7baa36de5">§</ulink>
- <ulink url="&commit_baseurl;46cad8b31">§</ulink>
- <ulink url="&commit_baseurl;6ab8f27bc">§</ulink>
- <ulink url="&commit_baseurl;bbf83cab9">§</ulink>
- <ulink url="&commit_baseurl;9db3018cf">§</ulink>
- <ulink url="&commit_baseurl;c34eabfbb">§</ulink>
- <ulink url="&commit_baseurl;cf2f82a37">§</ulink>
- <ulink url="&commit_baseurl;f93f5f7b9">§</ulink>
- <ulink url="&commit_baseurl;c880cf258">§</ulink>
- </para>
-
- <para>
- This is controlled by the existing <option>--jobs</option> option.
- </para>
- </listitem>
-
-<!--
-2025-03-25 [626d7236b] pg_upgrade: Add - -swap for faster file transfer.
--->
-
- <listitem>
- <para>
- Add <application>pg_upgrade</application> option
- <option>--swap</option> to swap directories rather than copy, clone,
- or link files (Nathan Bossart)
- <ulink url="&commit_baseurl;626d7236b">§</ulink>
- </para>
-
- <para>
- This mode is potentially the fastest.
- </para>
- </listitem>
-
-<!--
-2025-02-21 [a8238f87f] pg_upgrade: Preserve default char signedness value from
-2025-02-21 [1aab68059] pg_upgrade: Add - -set-char-signedness to set the default
--->
-
- <listitem>
- <para>
- Add <application>pg_upgrade</application> option
- <option>--set-char-signedness</option> to set the default
- <type>char</type> signedness of new cluster (Masahiko Sawada)
- <ulink url="&commit_baseurl;a8238f87f">§</ulink>
- <ulink url="&commit_baseurl;1aab68059">§</ulink>
- </para>
-
- <para>
- This is to handle cases where a
- pre-<productname>PostgreSQL</productname> 18 cluster's default
- <acronym>CPU</acronym> signedness does not match the new cluster.
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-logicalrep-app">
- <title>Logical Replication Applications</title>
-
- <itemizedlist>
-
-<!--
-2025-03-28 [fb2ea12f4] pg_createsubscriber: Add '- -all' option.
--->
-
- <listitem>
- <para>
- Add <xref linkend="app-pgcreatesubscriber"/> option
- <option>--all</option> to create logical replicas for all databases
- (Shubham Khanna)
- <ulink url="&commit_baseurl;fb2ea12f4">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-20 [e5aeed4b8] pg_createsubscriber: Add -R publications option.
--->
-
- <listitem>
- <para>
- Add <application>pg_createsubscriber</application> option
- <option>--remove</option> to remove publications (Shubham Khanna)
- <ulink url="&commit_baseurl;e5aeed4b8">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-26 [e117cfb2f] Add two-phase option in pg_createsubscriber.
--->
-
- <listitem>
- <para>
- Add <application>pg_createsubscriber</application> option
- <option>--enable-two-phase</option> to enable prepared transactions
- (Shubham Khanna)
- <ulink url="&commit_baseurl;e117cfb2f">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-04 [cf2655a90] pg_recvlogical: Add - -failover option.
--->
-
- <listitem>
- <para>
- Add <xref linkend="app-pgrecvlogical"/> option
- <option>--failover</option> to specify failover slots (Hayato Kuroda)
- <ulink url="&commit_baseurl;cf2655a90">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-25 [c68100aa4] Allow pg_recvlogical - -drop-slot to work without - -dbnam
--->
-
- <listitem>
- <para>
- Allow <application>pg_recvlogical</application>
- <option>--drop-slot</option> to work without
- <option>--dbname</option> (Hayato Kuroda)
- <ulink url="&commit_baseurl;c68100aa4">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- </sect3>
-
- <sect3 id="release-18-source-code">
- <title>Source Code</title>
-
- <itemizedlist>
-
-<!--
-2024-07-05 [4b211003e] Support loading of injection points
-2024-07-18 [a0a5869a8] Add INJECTION_POINT_CACHED() to run injection points dir
--->
-
- <listitem>
- <para>
- Separate the loading and running of <link
- linkend="xfunc-addin-injection-points">injection points</link>
- (Michael Paquier, Heikki Linnakangas)
- <ulink url="&commit_baseurl;4b211003e">§</ulink>
- <ulink url="&commit_baseurl;a0a5869a8">§</ulink>
- </para>
-
- <para>
- Injection points can now be created, but not run, via <link
- linkend="xfunc-addin-injection-points"><function>INJECTION_POINT_LOAD()</function></link>,
- and such injection points can be run via <link
- linkend="xfunc-addin-injection-points"><function>INJECTION_POINT_CACHED()</function></link>.
- </para>
- </listitem>
-
-<!--
-2025-05-10 [371f2db8b] Add support for runtime arguments in injection points
--->
-
- <listitem>
- <para>
- Support runtime arguments in injection points (Michael Paquier)
- <ulink url="&commit_baseurl;371f2db8b">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-26 [20e0e7da9] Add test for early backend startup errors
--->
-
- <listitem>
- <para>
- Allow inline injection point test code with <link
- linkend="xfunc-addin-injection-points"><function>IS_INJECTION_POINT_ATTACHED()</function></link>
- (Heikki Linnakangas)
- <ulink url="&commit_baseurl;20e0e7da9">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-05 [ca6fde922] Optimize JSON escaping using SIMD
--->
-
- <listitem>
- <para>
- Improve the performance of processing long <link
- linkend="datatype-json"><type>JSON</type></link> strings using
- <acronym>SIMD</acronym> (Single Instruction Multiple Data) (David
- Rowley)
- <ulink url="&commit_baseurl;ca6fde922">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-06 [3c6e8c123] Compute CRC32C using AVX-512 instructions where availabl
--->
-
- <listitem>
- <para>
- Speed up CRC32C calculations using x86 <acronym>AVX</acronym>-512
- instructions (Raghuveer Devulapalli, Paul Amonson)
- <ulink url="&commit_baseurl;3c6e8c123">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-28 [6be53c276] Optimize popcount functions with ARM Neon intrinsics.
-2025-03-28 [519338ace] Optimize popcount functions with ARM SVE intrinsics.
--->
-
- <listitem>
- <para>
- Add <acronym>ARM</acronym> Neon and <acronym>SVE CPU</acronym>
- intrinsics for popcount (integer bit counting) (Chiranmoy
- Bhattacharya, Devanga Susmitha, Rama Malladi)
- <ulink url="&commit_baseurl;6be53c276">§</ulink>
- <ulink url="&commit_baseurl;519338ace">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-09 [ca481d3c9] Optimise numeric multiplication for short inputs.
-2024-08-15 [c4e44224c] Extend mul_var_short() to 5 and 6-digit inputs.
-2024-08-15 [8dc28d7eb] Optimise numeric multiplication using base-NBASE^2 arith
-2024-10-04 [9428c001f] Speed up numeric division by always using the "fast" alg
--->
-
- <listitem>
- <para>
- Improve the speed of numeric multiplication and division (Joel
- Jacobson, Dean Rasheed)
- <ulink url="&commit_baseurl;ca481d3c9">§</ulink>
- <ulink url="&commit_baseurl;c4e44224c">§</ulink>
- <ulink url="&commit_baseurl;8dc28d7eb">§</ulink>
- <ulink url="&commit_baseurl;9428c001f">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-07 [65c298f61] Add support for basic NUMA awareness
-2025-04-07 [8cc139bec] Introduce pg_shmem_allocations_numa view
-2025-04-07 [ba2a3c230] Add pg_buffercache_numa view with NUMA node info
--->
-
- <listitem>
- <para>
- Add configure option <link
- linkend="configure-option-with-libnuma"><option>--with-libnuma</option></link>
- to enable <acronym>NUMA</acronym> awareness (Jakub Wartak, Bertrand
- Drouvot)
- <ulink url="&commit_baseurl;65c298f61">§</ulink>
- <ulink url="&commit_baseurl;8cc139bec">§</ulink>
- <ulink url="&commit_baseurl;ba2a3c230">§</ulink>
- </para>
-
- <para>
- The function <link
- linkend="functions-info-session-table"><function>pg_numa_available()</function></link>
- reports on <acronym>NUMA</acronym> awareness, and system views <link
- linkend="view-pg-shmem-allocations-numa"><structname>pg_shmem_allocations_numa</structname></link>
- and <link
- linkend="pgbuffercache-pg-buffercache-numa"><structname>pg_buffercache_numa</structname></link>
- which report on shared memory distribution across
- <acronym>NUMA</acronym> nodes.
- </para>
- </listitem>
-
-<!--
-2024-09-18 [b52c4fc3c] Add TOAST table to pg_index.
--->
-
- <listitem>
- <para>
- Add <link
- linkend="storage-toast"><acronym>TOAST</acronym></link> table to <link
- linkend="catalog-pg-index"><structname>pg_index</structname></link>
- to allow for very large expression indexes (Nathan Bossart)
- <ulink url="&commit_baseurl;b52c4fc3c">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-12-20 [02a8d0c45] Remove pg_attribute.attcacheoff column
--->
-
- <listitem>
- <para>
- Remove column <link
- linkend="catalog-pg-attribute"><structname>pg_attribute</structname></link>.<structfield>attcacheoff</structfield>
- (David Rowley)
- <ulink url="&commit_baseurl;02a8d0c45">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-03 [99f8f3fbb] Add relallfrozen to pg_class
--->
-
- <listitem>
- <para>
- Add column <link
- linkend="catalog-pg-class"><structname>pg_class</structname></link>.<structfield>relallfrozen</structfield>
- (Melanie Plageman)
- <ulink url="&commit_baseurl;99f8f3fbb">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-09-10 [56fead44d] Add amgettreeheight index AM API routine
-2025-03-07 [af4002b38] Rename amcancrosscompare
--->
-
- <listitem>
- <para>
- Add <link
- linkend="indexam"><structfield>amgettreeheight</structfield></link>,
- <literal>amconsistentequality</literal>, and
- <literal>amconsistentordering</literal> to the index access method
- <acronym>API</acronym> (Mark Dilger)
- <ulink url="&commit_baseurl;56fead44d">§</ulink>
- <ulink url="&commit_baseurl;af4002b38">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-09-17 [7406ab623] Add stratnum GiST support function
--->
-
- <listitem>
- <para>
- Add GiST support function <link
- linkend="gist-extensibility"><function>stratnum()</function></link>
- (Paul A. Jungwirth)
- <ulink url="&commit_baseurl;7406ab623">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-21 [44fe30fda] Add default_char_signedness field to ControlFileData.
--->
-
- <listitem>
- <para>
- Record the default <acronym>CPU</acronym> signedness of
- <literal>char</literal> in <xref linkend="app-pgcontroldata"/>
- (Masahiko Sawada)
- <ulink url="&commit_baseurl;44fe30fda">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-12 [72a3d0462] Prepare for Python "Limited API" in PL/Python
-2025-03-14 [0793ab810] Activate Python "Limited API" in PL/Python
--->
-
- <listitem>
- <para>
- Add support for Python "Limited <acronym>API</acronym>" in <xref
- linkend="plpython"/> (Peter Eisentraut)
- <ulink url="&commit_baseurl;72a3d0462">§</ulink>
- <ulink url="&commit_baseurl;0793ab810">§</ulink>
- </para>
-
- <para>
- This helps prevent problems caused by
- <application>Python</application> 3.x version mismatches.
- </para>
- </listitem>
-
-<!--
-2025-04-29 [45363fca6] Bump the minimum supported Python version to 3.6.8
--->
-
- <listitem>
- <para>
- Change the minimum supported <application>Python</application>
- version to 3.6.8 (Jacob Champion)
- <ulink url="&commit_baseurl;45363fca6">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-09-02 [a70e01d43] Remove support for OpenSSL older than 1.1.0
-2024-10-24 [6c66b7443] Raise the minimum supported OpenSSL version to 1.1.1
--->
-
- <listitem>
- <para>
- Remove support for <application>OpenSSL</application> versions older
- than 1.1.1 (Daniel Gustafsson)
- <ulink url="&commit_baseurl;a70e01d43">§</ulink>
- <ulink url="&commit_baseurl;6c66b7443">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-10-01 [972c2cd28] jit: Require at least LLVM 14, if enabled.
--->
-
- <listitem>
- <para>
- If <application>LLVM</application> is enabled, require version 14
- or later (Thomas Munro)
- <ulink url="&commit_baseurl;972c2cd28">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-26 [9324c8c58] Introduce PG_MODULE_MAGIC_EXT macro.
--->
-
- <listitem>
- <para>
- Add macro <link
- linkend="functions-info"><literal>PG_MODULE_MAGIC_EXT</literal></link>
- to allow extensions to report their name and version (Andrei Lepikhov)
- <ulink url="&commit_baseurl;9324c8c58">§</ulink>
- </para>
-
- <para>
- This information can be access via the new function <link
- linkend="functions-info-session-table"><function>pg_get_loaded_modules()</function></link>.
- </para>
- </listitem>
-
-<!--
-2024-09-09 [218527d01] Don't bother checking the result of SPI_connect[_ext] an
--->
-
- <listitem>
- <para>
- Document that <link
- linkend="spi-spi-connect"><function>SPI_connect()</function></link>/<link
- linkend="spi-spi-connect"><function>SPI_connect_ext()</function></link>
- always returns success (<literal>SPI_OK_CONNECT</literal>) (Stepan
- Neretin)
- <ulink url="&commit_baseurl;218527d01">§</ulink>
- </para>
-
- <para>
- Errors are always reported via <function>ereport()</function>.
- </para>
- </listitem>
-
-<!--
-2024-07-31 [e54a42ac9] Add API and ABI stability guidance to the C language doc
--->
-
- <listitem>
- <para>
- Add <link linkend="xfunc-api-abi-stability-guidance">documentation
- section</link> about <acronym>API</acronym> and <acronym>ABI</acronym>
- compatibility (David Wheeler, Peter Eisentraut)
- <ulink url="&commit_baseurl;e54a42ac9">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-01-27 [5afaba629] doc: Meson is not experimental on Windows
--->
-
- <listitem>
- <para>
- Remove the experimental designation of
- <application>Meson</application> builds on <systemitem
- class="osname">Windows</systemitem> (Aleksander Alekseev)
- <ulink url="&commit_baseurl;5afaba629">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-30 [e25626677] Remove - -disable-spinlocks.
-2024-07-30 [813852613] Remove - -disable-atomics, require 32 bit atomics.
--->
-
- <listitem>
- <para>
- Remove configure options <option>--disable-spinlocks</option> and
- <option>--disable-atomics</option> (Thomas Munro)
- <ulink url="&commit_baseurl;e25626677">§</ulink>
- <ulink url="&commit_baseurl;813852613">§</ulink>
- </para>
-
- <para>
- Thirty-two-bit atomic operations are now required.
- </para>
- </listitem>
-
-<!--
-2024-07-01 [edadeb071] Remove support for HPPA (a/k/a PA-RISC) architecture.
--->
-
- <listitem>
- <para>
- Remove support for the
- <acronym>HPPA</acronym>/<acronym>PA-RISC</acronym> architecture
- (Tom Lane)
- <ulink url="&commit_baseurl;edadeb071">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect3>
-
- <sect3 id="release-18-modules">
- <title>Additional Modules</title>
-
- <itemizedlist>
-
-<!--
-2024-10-14 [7cdfeee32] Add contrib/pg_logicalinspect.
--->
-
- <listitem>
- <para>
- Add extension <xref linkend="pglogicalinspect"/> to inspect logical
- snapshots (Bertrand Drouvot)
- <ulink url="&commit_baseurl;7cdfeee32">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-26 [8d5ceb113] pg_overexplain: Additional EXPLAIN options for debugging
--->
-
- <listitem>
- <para>
- Add extension <xref linkend="pgoverexplain"/> which adds debug details
- to <link linkend="sql-explain"><command>EXPLAIN</command></link>
- output (Robert Haas)
- <ulink url="&commit_baseurl;8d5ceb113">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-07-26 [c297a47c5] postgres_fdw: Add "used_in_xact" column to postgres_fdw_
-2024-07-26 [857df3cef] postgres_fdw: Add connection status check to postgres_fd
-2024-09-18 [4f08ab554] postgres_fdw: Extend postgres_fdw_get_connections to ret
-2025-03-03 [fe186bda7] postgres_fdw: Extend postgres_fdw_get_connections to ret
--->
-
- <listitem>
- <para>
- Add output columns to <link
- linkend="postgres-fdw-functions"><function>postgres_fdw_get_connections()</function></link>
- (Hayato Kuroda, Sagar Dilip Shedge)
- <ulink url="&commit_baseurl;c297a47c5">§</ulink>
- <ulink url="&commit_baseurl;857df3cef">§</ulink>
- <ulink url="&commit_baseurl;4f08ab554">§</ulink>
- <ulink url="&commit_baseurl;fe186bda7">§</ulink>
- </para>
-
- <para>
- New output column <structfield>used_in_xact</structfield> indicates
- if the foreign data wrapper is being used by a current transaction,
- <structfield>closed</structfield> indicates if it is closed,
- <structfield>user_name</structfield> indicates the user name, and
- <structfield>remote_backend_pid</structfield> indicates the remote
- backend process identifier.
- </para>
- </listitem>
-
-<!--
-2025-01-15 [761c79508] postgres_fdw: SCRAM authentication pass-through
--->
-
- <listitem>
- <para>
- Allow <link linkend="auth-password"><acronym>SCRAM</acronym></link>
- authentication from the client to be passed to <xref
- linkend="postgres-fdw"/> servers (Matheus Alcantara, Peter Eisentraut)
- <ulink url="&commit_baseurl;761c79508">§</ulink>
- </para>
-
- <para>
- This avoids storing <application>postgres_fdw</application>
- authentication information in the database, and is
- enabled with the <application>postgres_fdw</application> <link
- linkend="postgres-fdw-option-use-scram-passthrough"><literal>use_scram_passthrough</literal></link>
- connection option. libpq uses new connection parameters
- <xref linkend="libpq-connect-scram-client-key"/> and <xref
- linkend="libpq-connect-scram-server-key"/>.
- </para>
- </listitem>
-
-<!--
-2025-03-26 [3642df265] dblink: SCRAM authentication pass-through
--->
-
- <listitem>
- <para>
- Allow <acronym>SCRAM</acronym> authentication from the client to be
- passed to <xref linkend="dblink"/> servers (Matheus Alcantara)
- <ulink url="&commit_baseurl;3642df265">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-10-03 [a1c4c8a9e] file_fdw: Add on_error and log_verbosity options to file
--->
-
- <listitem>
- <para>
- Add <literal>on_error</literal> and <literal>log_verbosity</literal>
- options to <xref linkend="file-fdw"/> (Atsushi Torikoshi)
- <ulink url="&commit_baseurl;a1c4c8a9e">§</ulink>
- </para>
-
- <para>
- These control how <application>file_fdw</application> handles and
- reports invalid file rows.
- </para>
- </listitem>
-
-<!--
-2024-11-20 [6c8f67032] file_fdw: Add REJECT_LIMIT option to file_fdw.
--->
-
- <listitem>
- <para>
- Add <literal>reject_limit</literal> to control the number of
- invalid rows <application>file_fdw</application> can ignore (Atsushi
- Torikoshi)
- <ulink url="&commit_baseurl;6c8f67032">§</ulink>
- </para>
-
- <para>
- This is active when <literal>ON_ERROR = 'ignore'</literal>.
- </para>
- </listitem>
-
-<!--
-2025-01-07 [f7e1b3828] Add passwordcheck.min_password_length.
--->
-
- <listitem>
- <para>
- Add configurable variable <varname>min_password_length</varname> to
- <xref linkend="passwordcheck"/> (Emanuele Musella, Maurizio Boriani)
- <ulink url="&commit_baseurl;f7e1b3828">§</ulink>
- </para>
-
- <para>
- This controls the minimum password length.
- </para>
- </listitem>
-
-<!--
-2024-10-11 [cae0f3c40] pgbench: Improve result outputs related to failed transa
--->
-
- <listitem>
- <para>
- Have <xref linkend="pgbench"/> report the number of failed, retried,
- or skipped transactions in per-script reports (Yugo Nagata)
- <ulink url="&commit_baseurl;cae0f3c40">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-16 [448904423] contrib/isn: Make weak mode a GUC setting, and fix relat
--->
-
- <listitem>
- <para>
- Add <xref linkend="isn"/> server variable <literal>weak</literal>
- to control invalid check digit acceptance (Viktor Holmberg)
- <ulink url="&commit_baseurl;448904423">§</ulink>
- </para>
-
- <para>
- This was previously only controlled by function <link
- linkend="isn-functions"><function>isn_weak()</function></link>.
- </para>
- </listitem>
-
-<!--
-2025-04-03 [e4309f73f] Add support for sorted gist index builds to btree_gist
--->
-
- <listitem>
- <para>
- Allow values to be sorted to speed <xref linkend="btree-gist"/>
- index builds (Bernd Helmle, Andrey Borodin)
- <ulink url="&commit_baseurl;e4309f73f">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-03-29 [14ffaece0] amcheck: Add gin_index_check() to verify GIN index
--->
-
- <listitem>
- <para>
- Add <xref linkend="amcheck"/> check function <link
- linkend="amcheck-functions"><function>gin_index_check()</function></link>
- to verify <literal>GIN</literal> indexes (Grigory Kryachko, Heikki
- Linnakangas, Andrey Borodin)
- <ulink url="&commit_baseurl;14ffaece0">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-04-08 [dcf7e1697] Add pg_buffercache_evict_{relation,all} functions
--->
-
- <listitem>
- <para>
- Add functions <link
- linkend="pgbuffercache-pg-buffercache-evict-relation"><function>pg_buffercache_evict_relation()</function></link>
- and <link
- linkend="pgbuffercache-pg-buffercache-evict-all"><function>pg_buffercache_evict_all()</function></link>
- to evict unpinned shared buffers (Nazir Bilal Yavuz)
- <ulink url="&commit_baseurl;dcf7e1697">§</ulink>
- </para>
-
- <para>
- The existing function <link
- linkend="pgbuffercache-pg-buffercache-evict"><function>pg_buffercache_evict()</function></link>
- now returns the buffer flush status.
- </para>
- </listitem>
-
-<!--
-2025-03-18 [c65bc2e1d] Make it possible for loadable modules to add EXPLAIN opt
-2025-03-18 [4fd02bf7c] Add some new hooks so extensions can add details to EXPL
-2025-03-20 [50ba65e73] Add an additional hook for EXPLAIN option validation.
--->
-
- <listitem>
- <para>
- Allow extensions to install custom <xref linkend="sql-explain"/>
- options (Robert Haas, Sami Imseih)
- <ulink url="&commit_baseurl;c65bc2e1d">§</ulink>
- <ulink url="&commit_baseurl;4fd02bf7c">§</ulink>
- <ulink url="&commit_baseurl;50ba65e73">§</ulink>
- </para>
- </listitem>
-
-<!--
-2024-08-04 [7949d9594] Introduce pluggable APIs for Cumulative Statistics
-2024-08-05 [2eff9e678] Add helper routines to retrieve data for custom fixed-nu
--->
-
- <listitem>
- <para>
- Allow extensions to use the server's cumulative statistics
- <acronym>API</acronym> (Michael Paquier)
- <ulink url="&commit_baseurl;7949d9594">§</ulink>
- <ulink url="&commit_baseurl;2eff9e678">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- <sect4 id="release-18-pgstatstatements">
- <title><xref linkend="pgstatstatements"/></title>
-
- <itemizedlist>
-
-<!--
-2024-10-28 [6b652e6ce] Set query ID for inner queries of CREATE TABLE AS and DE
--->
-
- <listitem>
- <para>
- Allow the queries of <xref linkend="sql-createtableas"/>
- and <xref linkend="sql-declare"/> to be tracked by
- <application>pg_stat_statements</application> (Anthonin Bonnefoy)
- <ulink url="&commit_baseurl;6b652e6ce">§</ulink>
- </para>
-
- <para>
- They are also now assigned query ids.
- </para>
- </listitem>
-
-<!--
-2024-09-30 [dc6851596] Show values of SET statements as constants in pg_stat_st
--->
-
- <listitem>
- <para>
- Allow the parameterization of <xref linkend="sql-set"/> values in
- <application>pg_stat_statements</application> (Greg Sabino Mullane,
- Michael Paquier)
- <ulink url="&commit_baseurl;dc6851596">§</ulink>
- </para>
-
- <para>
- This reduces the bloat caused by <command>SET</command> statements
- with differing constants.
- </para>
- </listitem>
-
-<!--
-2024-10-09 [cf54a2c00] pg_stat_statements: Add columns to track parallel worker
--->
-
- <listitem>
- <para>
- Add <link
- linkend="pgstatstatements-pg-stat-statements"><structname>pg_stat_statements</structname></link>
- columns to report parallel activity (Guillaume Lelarge)
- <ulink url="&commit_baseurl;cf54a2c00">§</ulink>
- </para>
-
- <para>
- The new columns are
- <structfield>parallel_workers_to_launch</structfield> and
- <structfield>parallel_workers_launched</structfield>.
- </para>
- </listitem>
-
-<!--
-2025-02-17 [ce5bcc4a9] pg_stat_statements: Add wal_buffers_full
--->
-
- <listitem>
- <para>
- Add
- <structname>pg_stat_statements</structname>.<structfield>wal_buffers_full</structfield>
- to report full <acronym>WAL</acronym> buffers (Bertrand Drouvot)
- <ulink url="&commit_baseurl;ce5bcc4a9">§</ulink>
- </para>
- </listitem>
-
- </itemizedlist>
-
- </sect4>
-
- <sect4 id="release-18-pgcrypto">
- <title><xref linkend="pgcrypto"/></title>
-
- <itemizedlist>
-
-<!--
-2025-04-05 [749a9e20c] Add modern SHA-2 based password hashes to pgcrypto.
--->
-
- <listitem>
- <para>
- Add <application>pgcrypto</application> algorithms <link
- linkend="pgcrypto-crypt-algorithms"><literal>sha256crypt</literal></link>
- and <link
- linkend="pgcrypto-crypt-algorithms"><literal>sha512crypt</literal></link>
- (Bernd Helmle)
- <ulink url="&commit_baseurl;749a9e20c">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-02-14 [9ad1b3d01] pgcrypto: Add support for CFB mode in AES encryption
--->
-
- <listitem>
- <para>
- Add <link
- linkend="pgcrypto-raw-enc-funcs"><acronym>CFB</acronym></link> mode
- to <application>pgcrypto</application> encryption and decryption
- (Umar Hayat)
- <ulink url="&commit_baseurl;9ad1b3d01">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-01-24 [924d89a35] pgcrypto: Add function to check FIPS mode
--->
-
- <listitem>
- <para>
- Add function <link
- linkend="pgcrypto-openssl-support-funcs"><function>fips_mode()</function></link>
- to report the server's <acronym>FIPS</acronym> mode (Daniel
- Gustafsson)
- <ulink url="&commit_baseurl;924d89a35">§</ulink>
- </para>
- </listitem>
-
-<!--
-2025-01-24 [035f99cbe] pgcrypto: Make it possible to disable built-in crypto
--->
-
- <listitem>
- <para>
- Add <application>pgcrypto</application> server variable <link
- linkend="pgcrypto-configuration-parameters-builtin_crypto_enabled"><varname>builtin_crypto_enabled</varname></link>
- to allow disabling builtin non-<acronym>FIPS</acronym> mode
- cryptographic functions (Daniel Gustafsson, Joe Conway)
- <ulink url="&commit_baseurl;035f99cbe">§</ulink>
- </para>
-
- <para>
- This is useful for guaranteeing <acronym>FIPS</acronym> mode behavior.
- </para>
- </listitem>
-
- </itemizedlist>
- </sect4>
-
- </sect3>
-
- </sect2>
-
- <sect2 id="release-18-acknowledgements">
- <title>Acknowledgments</title>
-
- <para>
- The following individuals (in alphabetical order) have contributed
- to this release as patch authors, committers, reviewers, testers,
- or reporters of issues.
- </para>
-
- <simplelist>
- <member>(to be completed)</member>
- </simplelist>
- </sect2>
-
- </sect1>
projects / postgresql.git / commitdiff