From: Bruce Momjian <bruce@momjian.us>
Date: Wed, 5 Oct 2011 01:47:07 +0000 (-0400)
Subject: Explain COALESCE example in the docs.
X-Git-Url: http://git.postgresql.org/gitweb/?a=commitdiff_plain;h=9d23d7cdafb3540aa2de9310c7f1afee87dfc2f2;p=users%2Fkgrittn%2Fpostgres.git

Explain COALESCE example in the docs.
---

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 0b6a109432..2f307c2b12 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -10015,6 +10015,8 @@ SELECT ... WHERE CASE WHEN x &lt;&gt; 0 THEN y/x &gt; 1.5 ELSE false END;
 <programlisting>
 SELECT COALESCE(description, short_description, '(none)') ...
 </programlisting>
+   This returns <varname>description</> if it is not null, or
+   <varname>short_description</> if it is not null, or <literal>(none)</>.
   </para>
 
    <para>