From dec4ed311a2fa623eab846eb0a3ac7db8102f7a0 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Fri, 17 Oct 2003 00:55:17 +0000
Subject: [PATCH] Add note deprecating use of consrc.
---
doc/src/sgml/catalogs.sgml | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index f918e6f1bf2..9a8e2ff455b 100644
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -1,6 +1,6 @@
<!--
Documentation of the system catalogs, directed toward PostgreSQL developers
- $Header: /cvsroot/pgsql/doc/src/sgml/catalogs.sgml,v 2.74 2003/09/12 22:17:19 tgl Exp $
+ $Header: /cvsroot/pgsql/doc/src/sgml/catalogs.sgml,v 2.75 2003/10/17 00:55:17 tgl Exp $
-->
<chapter id="catalogs">
@@ -1357,6 +1357,15 @@
</tgroup>
</table>
+ <note>
+ <para>
+ <structfield>consrc</structfield> is not updated when referenced objects
+ change; for example, it won't track renaming of columns. Rather than
+ relying on this field, it's best to use <function>pg_get_constraintdef()</>
+ to extract the definition of a check constraint.
+ </para>
+ </note>
+
<note>
<para>
<literal>pg_class.relchecks</literal> needs to agree with the
--
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