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Patch to LOCK multiple tables in one LOCK command.

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Neil Padgett
This commit is contained in:
Bruce Momjian
2001-08-10 14:30:15 +00:00
parent 49eb4f47c7
commit 77a69a2ed1
7 changed files with 53 additions and 34 deletions
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16
doc/src/sgml/ref/lock.sgml
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@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/lock.sgml,v 1.26 2001/08/04 22:01:38 momjian Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/lock.sgml,v 1.27 2001/08/10 14:30:14 momjian Exp $
Postgres documentation
-->
@ -15,7 +15,7 @@ Postgres documentation
LOCK
</refname>
<refpurpose>
Explicitly lock a table inside a transaction
Explicitly lock a table / tables inside a transaction
</refpurpose>
</refnamediv>
<refsynopsisdiv>
@ -23,8 +23,8 @@ Postgres documentation
<date>2001-07-09</date>
</refsynopsisdivinfo>
<synopsis>
LOCK [ TABLE ] <replaceable class="PARAMETER">name</replaceable>
LOCK [ TABLE ] <replaceable class="PARAMETER">name</replaceable> IN <replaceable class="PARAMETER">lockmode</replaceable> MODE
LOCK [ TABLE ] <replaceable class="PARAMETER">name</replaceable> [, ...]
LOCK [ TABLE ] <replaceable class="PARAMETER">name</replaceable> [, ...] IN <replaceable class="PARAMETER">lockmode</replaceable> MODE
where <replaceable class="PARAMETER">lockmode</replaceable> is one of:
@ -373,6 +373,7 @@ ERROR <replaceable class="PARAMETER">name</replaceable>: Table does not exist.
An example for this rule was given previously when discussing the
use of SHARE ROW EXCLUSIVE mode rather than SHARE mode.
</para>
</listitem>
</itemizedlist>
@ -383,6 +384,12 @@ ERROR <replaceable class="PARAMETER">name</replaceable>: Table does not exist.
</para>
</note>
<para>
When locking multiple tables, the command LOCK a, b; is equivalent to LOCK
a; LOCK b;. The tables are locked one-by-one in the order specified in the
<command>LOCK</command> command.
</para>
<refsect2 id="R2-SQL-LOCK-3">
<refsect2info>
<date>1999-06-08</date>
@ -406,6 +413,7 @@ ERROR <replaceable class="PARAMETER">name</replaceable>: Table does not exist.
<para>
<command>LOCK</command> works only inside transactions.
</para>
</refsect2>
</refsect1>