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-rw-r--r--doc/src/sgml/ref/lock.sgml16
1 files changed, 12 insertions, 4 deletions
diff --git a/doc/src/sgml/ref/lock.sgml b/doc/src/sgml/ref/lock.sgml
index 20530d75d71..b66f42e7ebc 100644
--- a/doc/src/sgml/ref/lock.sgml
+++ b/doc/src/sgml/ref/lock.sgml
@@ -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>