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doc: improve ALTER TABLE "offical constraint" wording 

Reported-by: Josh Kupershmidt

Discussion: https://postgr.es/m/CAK3UJRF=KY_nx_TRQq+t6jOrtS2rry79ktkzPiMDhFx_K=dZAg@mail.gmail.com

Author: Josh Kupershmidt

Backpatch-through: master
This commit is contained in:
Bruce Momjian 2023-11-24 20:07:14 -05:00
parent 798394c6cc
commit 712dc2338b
1 changed files with 2 additions and 2 deletions
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4
doc/src/sgml/ref/alter_table.sgml
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@ -525,8 +525,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
Adding a constraint using an existing index can be helpful in
situations where a new constraint needs to be added without blocking
table updates for a long time. To do that, create the index using
<command>CREATE INDEX CONCURRENTLY</command>, and then install it as an
official constraint using this syntax. See the example below.
<command>CREATE UNIQUE INDEX CONCURRENTLY</command>, and then convert it to a
constraint using this syntax. See the example below.
</para>
</note>
</listitem>