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Correct overstatement in locking docs: we said ExclusiveLock is never

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taken automatically, but this is only true with respect to user tables.
This commit is contained in:
Tom Lane 2005-02-26 18:37:17 +00:00
parent 0060023c3d
commit 891497d3a9
1 changed files with 4 additions and 3 deletions
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7
doc/src/sgml/mvcc.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/mvcc.sgml,v 2.46 2004/12/23 23:07:38 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/mvcc.sgml,v 2.47 2005/02/26 18:37:17 tgl Exp $
-->
<chapter id="mvcc">
@ -677,8 +677,9 @@ SELECT SUM(value) FROM mytab WHERE class = 2;
</para>
<para>
This lock mode is not automatically acquired by any
<productname>PostgreSQL</productname> command.
This lock mode is not automatically acquired on user tables by any
<productname>PostgreSQL</productname> command. However it is
acquired on certain system catalogs in some operations.
</para>
</listitem>
</varlistentry>