Document use of partial indexes for partial unique constraints

Report by Tomáš Greif

Backpatch through 9.4
This commit is contained in:
Bruce Momjian 2014-09-03 14:32:57 -04:00
parent 4011f8c98b
commit 4b22401175

View File

@ -546,7 +546,9 @@ CREATE TABLE products (
<para>
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>
<indexterm>