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doc: adjust DECLARE docs to mention FOR UPDATE behavior

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Reported-by: Peter Eisentraut

Discussion: https://postgr.es/m/8dc63ba7-dc56-fc7c-fc16-4fae03e3bfe6@2ndquadrant.com

Author: Peter Eisentraut, Tom Lane, me

Backpatch-through: 9.3
This commit is contained in:
Bruce Momjian 2018-05-28 13:16:02 -04:00
parent f963f80970
commit 99164e6952
1 changed files with 2 additions and 1 deletions
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doc/src/sgml/ref/declare.sgml
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@ -271,7 +271,8 @@ DECLARE <replaceable class="parameter">name</replaceable> [ BINARY ] [ INSENSITI
and not use grouping or <literal>ORDER BY</literal>). Cursors
that are not simply updatable might work, or might not, depending on plan
choice details; so in the worst case, an application might work in testing
and then fail in production.
and then fail in production. If <literal>FOR UPDATE</literal> is
specified, the cursor is guaranteed to be updatable.
</para>
<para>