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authorPeter Eisentraut2021-01-30 10:05:15 +0000
committerPeter Eisentraut2021-01-30 10:21:32 +0000
commit65330622441d7ee08f768c4326825ae903f2595a (patch)
tree9aa5e370900f247079bffb2d365cbeb5723532f8
parent6aaaa76bb47db11cd6f567eafa3d1ee81ca59556 (diff)
doc: Clarify status of SELECT INTO on reference page
The documentation as well as source code comments weren't entirely clear whether SELECT INTO was truly deprecated (thus in theory destined to be removed eventually), or just a less recommended variant. After discussion, it appears that other implementations also use SELECT INTO in direct SQL in a way similar to PostgreSQL, so it seems worth keeping it for compatibility. Update the language in the documentation to that effect. Discussion: https://www.postgresql.org/message-id/flat/96dc0df3-e13a-a85d-d045-d6e2c85218da%40enterprisedb.com
-rw-r--r--doc/src/sgml/ref/select_into.sgml8
1 files changed, 5 insertions, 3 deletions
diff --git a/doc/src/sgml/ref/select_into.sgml b/doc/src/sgml/ref/select_into.sgml
index 7b327d9eeef..acc6401485b 100644
--- a/doc/src/sgml/ref/select_into.sgml
+++ b/doc/src/sgml/ref/select_into.sgml
@@ -138,9 +138,11 @@ SELECT * INTO films_recent FROM films WHERE date_prod >= '2002-01-01';
in <application>ECPG</application> (see <xref linkend="ecpg"/>) and
<application>PL/pgSQL</application> (see <xref linkend="plpgsql"/>).
The <productname>PostgreSQL</productname> usage of <command>SELECT
- INTO</command> to represent table creation is historical. It is
- best to use <command>CREATE TABLE AS</command> for this purpose in
- new code.
+ INTO</command> to represent table creation is historical. Some other SQL
+ implementations also use <command>SELECT INTO</command> in this way (but
+ most SQL implementations support <command>CREATE TABLE AS</command>
+ instead). Apart from such compatibility considerations, it is best to use
+ <command>CREATE TABLE AS</command> for this purpose in new code.
</para>
</refsect1>