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authorBruce Momjian2020-08-31 17:43:05 +0000
committerBruce Momjian2020-08-31 17:43:05 +0000
commit47c427d006267d752fee4655543ec99dabe9e61d (patch)
treef33e60a712e3295faf209a049b0dd08959bc1a68
parent243a3b92a67519d4da1712b4fbad194bded3afb5 (diff)
docs: improve 'capitals' inheritance example
Adds constraints and improves wording. Reported-by: [email protected] Discussion: https://postgr.es/m/[email protected] Backpatch-through: 9.5
-rw-r--r--doc/src/sgml/advanced.sgml5
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/src/sgml/advanced.sgml b/doc/src/sgml/advanced.sgml
index d77312600f..2d4ab85d45 100644
--- a/doc/src/sgml/advanced.sgml
+++ b/doc/src/sgml/advanced.sgml
@@ -616,7 +616,7 @@ CREATE TABLE cities (
);
CREATE TABLE capitals (
- state char(2)
+ state char(2) UNIQUE NOT NULL
) INHERITS (cities);
</programlisting>
</para>
@@ -630,7 +630,8 @@ CREATE TABLE capitals (
<type>text</type>, a native <productname>PostgreSQL</productname>
type for variable length character strings. The
<classname>capitals</classname> table has
- an extra column, <structfield>state</structfield>, which shows their states. In
+ an additional column, <structfield>state</structfield>, which shows its
+ state abbreviation. In
<productname>PostgreSQL</productname>, a table can inherit from
zero or more other tables.
</para>