doc: adjust DECLARE docs to mention FOR UPDATE behavior

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 f9ecb6caba
commit 7b614c78be

View File

@ -271,7 +271,8 @@ DECLARE <replaceable class="parameter">name</replaceable> [ BINARY ] [ INSENSITI
and not use grouping or <literal>ORDER BY</>). 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>