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Fix slightly misleading description of PERFORM syntax.

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This commit is contained in:
Tom Lane 2004-09-24 18:54:14 +00:00
parent ae72283816
commit 12a2121c75
1 changed files with 7 additions and 5 deletions
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12
doc/src/sgml/plpgsql.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.46 2004/08/16 17:52:06 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.47 2004/09/24 18:54:14 tgl Exp $
-->
<chapter id="plpgsql">
@ -1073,10 +1073,12 @@ END;
PERFORM <replaceable>query</replaceable>;
</synopsis>
This executes <replaceable>query</replaceable>, which must be a
<command>SELECT</command> statement, and discards the
result. <application>PL/pgSQL</application> variables are
substituted in the query as usual. Also, the special variable
This executes <replaceable>query</replaceable> and discards the
result. Write the <replaceable>query</replaceable> the same
way as you would in an SQL <command>SELECT</> command, but replace the
initial keyword <command>SELECT</> with <command>PERFORM</command>.
<application>PL/pgSQL</application> variables will be
substituted into the query as usual. Also, the special variable
<literal>FOUND</literal> is set to true if the query produced at
least one row or false if it produced no rows.
</para>