From: Bruce Momjian <bruce@momjian.us>
Date: Thu, 25 Jun 2020 22:33:28 +0000 (-0400)
Subject: doc:  mention trigger helper functions in CREATE TRIGGER docs
X-Git-Tag: REL9_6_19~36
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9ac3b6f9d2627585e0d824548a4c09a3c7678d09;p=thirdparty%2Fpostgresql.git

doc:  mention trigger helper functions in CREATE TRIGGER docs

Reported-by: petermpallesen@gmail.com

Discussion: https://postgr.es/m/159195294959.673.5752624528747900508@wrigleys.postgresql.org

Backpatch-through: 9.5
---

diff --git a/doc/src/sgml/ref/create_trigger.sgml b/doc/src/sgml/ref/create_trigger.sgml
index 42172ea1da2..f569a6c8261 100644
--- a/doc/src/sgml/ref/create_trigger.sgml
+++ b/doc/src/sgml/ref/create_trigger.sgml
@@ -386,6 +386,12 @@ UPDATE OF <replaceable>column_name1</replaceable> [, <replaceable>column_name2</
    value did not change.
   </para>
 
+  <para>
+   There are a few built-in trigger functions that can be used to
+   solve common problems without having to write your own trigger code;
+   see <xref linkend="functions-trigger">.
+  </para>
+
   <para>
    In a <literal>BEFORE</> trigger, the <literal>WHEN</> condition is
    evaluated just before the function is or would be executed, so using