database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-09-02 04:21:28 +03:00
Code Activity

Support statement-level ON TRUNCATE triggers. Simon Riggs

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

14
doc/src/sgml/pltcl.sgml
View File

@@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/pltcl.sgml,v 2.47 2007/12/03 23:49:50 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/pltcl.sgml,v 2.48 2008/03/28 00:21:55 tgl Exp $ -->
<chapter id="pltcl">
<title>PL/Tcl - Tcl Procedural Language</title>
@@ -569,7 +569,7 @@ SELECT 'doesn''t' AS ret
<listitem>
<para>
The string <literal>BEFORE</> or <literal>AFTER</> depending on the
type of trigger call.
type of trigger event.
</para>
</listitem>
</varlistentry>
@@ -579,7 +579,7 @@ SELECT 'doesn''t' AS ret
<listitem>
<para>
The string <literal>ROW</> or <literal>STATEMENT</> depending on the
type of trigger call.
type of trigger event.
</para>
</listitem>
</varlistentry>
@@ -588,8 +588,9 @@ SELECT 'doesn''t' AS ret
<term><varname>$TG_op</varname></term>
<listitem>
<para>
The string <literal>INSERT</>, <literal>UPDATE</>, or
<literal>DELETE</> depending on the type of trigger call.
The string <literal>INSERT</>, <literal>UPDATE</>,
<literal>DELETE</>, or <literal>TRUNCATE</> depending on the type of
trigger event.
</para>
</listitem>
</varlistentry>
@@ -602,6 +603,7 @@ SELECT 'doesn''t' AS ret
row for <command>INSERT</> or <command>UPDATE</> actions, or
empty for <command>DELETE</>. The array is indexed by column
name. Columns that are null will not appear in the array.
This is not set for statement-level triggers.
</para>
</listitem>
</varlistentry>
@@ -614,6 +616,7 @@ SELECT 'doesn''t' AS ret
row for <command>UPDATE</> or <command>DELETE</> actions, or
empty for <command>INSERT</>. The array is indexed by column
name. Columns that are null will not appear in the array.
This is not set for statement-level triggers.
</para>
</listitem>
</varlistentry>
@@ -644,6 +647,7 @@ SELECT 'doesn''t' AS ret
only.) Needless to say that all this is only meaningful when the trigger
is <literal>BEFORE</> and <command>FOR EACH ROW</>; otherwise the return value is ignored.
</para>
<para>
Here's a little example trigger procedure that forces an integer value
in a table to keep track of the number of updates that are performed on the