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| author | Bruce Momjian <bruce@momjian.us> | 2020-08-31 13:43:04 -0400 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2020-08-31 13:43:04 -0400 |
| commit | ac736e43aa70dfb3da99e8d12349b801229aa2bc (patch) | |
| tree | 79ae0f85957cfa382a1c04cbaa8a9e70f4f20a42 | |
| parent | 5277f493dde7de00250d33a8ea79a5b93ee89dae (diff) | |
| download | postgresql-ac736e43aa70dfb3da99e8d12349b801229aa2bc.tar.gz postgresql-ac736e43aa70dfb3da99e8d12349b801229aa2bc.zip | |
docs: improve 'capitals' inheritance example
Adds constraints and improves wording.
Reported-by: 2552891@gmail.com
Discussion: https://postgr.es/m/159586122762.680.1361378513036616007@wrigleys.postgresql.org
Backpatch-through: 9.5
| -rw-r--r-- | doc/src/sgml/advanced.sgml | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/src/sgml/advanced.sgml b/doc/src/sgml/advanced.sgml index d77312600f7..2d4ab85d450 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> |