From 92003189729afa1dd1c78feed387c559b053d61f Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 16 Jan 2006 19:50:03 +0000
Subject: [PATCH] Add documentaiotn mention that constraint names can be
sentences that can convey information to clients on constraint violation.
---
doc/src/sgml/ref/create_table.sgml | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/doc/src/sgml/ref/create_table.sgml b/doc/src/sgml/ref/create_table.sgml
index adfcd13ff0d..2c5e14caf24 100644
--- a/doc/src/sgml/ref/create_table.sgml
+++ b/doc/src/sgml/ref/create_table.sgml
@@ -1,5 +1,5 @@
<!--
-$PostgreSQL: pgsql/doc/src/sgml/ref/create_table.sgml,v 1.96 2005/11/01 21:09:50 tgl Exp $
+$PostgreSQL: pgsql/doc/src/sgml/ref/create_table.sgml,v 1.97 2006/01/16 19:50:03 momjian Exp $
PostgreSQL documentation
-->
@@ -293,7 +293,10 @@ and <replaceable class="PARAMETER">table_constraint</replaceable> is:
<term><literal>CONSTRAINT <replaceable class="PARAMETER">constraint_name</replaceable></literal></term>
<listitem>
<para>
- An optional name for a column or table constraint. If not specified,
+ An optional name for a column or table constraint. If the
+ constraint is violated, the constraint name is present in error messages,
+ so constraint names like "col must be positive" can be used to communicate
+ helpful constraint information to client applications. If not specified,
the system generates a name.
</para>
</listitem>
--
GitLab