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Support statement-level ON TRUNCATE triggers. Simon Riggs

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This commit is contained in:
Tom Lane
2008-03-28 00:21:56 +00:00
parent 107b3d0c23
commit 7692d8d5b7
23 changed files with 454 additions and 83 deletions
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21
doc/src/sgml/plperl.sgml
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@@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/plperl.sgml,v 2.67 2008/01/25 15:28:35 adunstan Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/plperl.sgml,v 2.68 2008/03/28 00:21:55 tgl Exp $ -->
<chapter id="plperl">
<title>PL/Perl - Perl Procedural Language</title>
@@ -17,12 +17,14 @@
<ulink url="http://www.perl.com">Perl programming language</ulink>.
</para>
<para> The usual advantage to using PL/Perl is that this allows use,
<para>
The main advantage to using PL/Perl is that this allows use,
within stored functions, of the manyfold <quote>string
munging</quote> operators and functions available for Perl. Parsing
munging</quote> operators and functions available for Perl. Parsing
complex strings might be easier using Perl than it is with the
string functions and control structures provided in PL/pgSQL.</para>
string functions and control structures provided in PL/pgSQL.
</para>
<para>
To install PL/Perl in a particular database, use
<literal>createlang plperl <replaceable>dbname</></literal>.
@@ -739,7 +741,8 @@ $$ LANGUAGE plperl;
<term><literal>$_TD-&gt;{event}</literal></term>
<listitem>
<para>
Trigger event: <literal>INSERT</>, <literal>UPDATE</>, <literal>DELETE</>, or <literal>UNKNOWN</>
Trigger event: <literal>INSERT</>, <literal>UPDATE</>,
<literal>DELETE</>, <literal>TRUNCATE</>, or <literal>UNKNOWN</>
</para>
</listitem>
</varlistentry>
@@ -822,14 +825,14 @@ $$ LANGUAGE plperl;
</para>
<para>
Triggers can return one of the following:
Row-level triggers can return one of the following:
<variablelist>
<varlistentry>
<term><literal>return;</literal></term>
<listitem>
<para>
Execute the statement
Execute the operation
</para>
</listitem>
</varlistentry>
@@ -838,7 +841,7 @@ $$ LANGUAGE plperl;
<term><literal>"SKIP"</literal></term>
<listitem>
<para>
Don't execute the statement
Don't execute the operation
</para>
</listitem>
</varlistentry>