database/postgres
database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-05-15 19:15:29 +03:00
Code

Document use of partial indexes for partial unique constraints

Browse Source 
Report by Tomáš Greif

Backpatch through 9.4
This commit is contained in:
Bruce Momjian 2014-09-03 14:34:46 -04:00
parent 6ea591ed46
commit 646deb603e
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
doc/src/sgml/ddl.sgml
View File

@ -546,7 +546,9 @@ CREATE TABLE products (
<para> <para>
Adding a unique constraint will automatically create a unique btree Adding a unique constraint will automatically create a unique btree
index on the column or group of columns used in the constraint. index on the column or group of columns used in the constraint.
A uniqueness constraint on only some rows can be enforced by creating
a <link linkend="indexes-partial">partial index</link>.
</para> </para>
<indexterm> <indexterm>