postgres.git / summary / log / commit / refs

commit    04db9d25d1961b1f056dec32f6711d0af0629bef
Author:   Bruce Momjian <bruce@momjian.us>
Date:     Thu Dec 08 21:35:36 2005 +0000
First released in: 8.2.0, 8.1.1

    there's a paragraph in the ALTER TABLE reference page that reads:
    
    DROP CONSTRAINT
    
        This form drops constraints on a table. Currently, constraints on tables
        are not required to have unique names, so there may be more than one
        constraint matching the specified name. All matching constraints will be
        dropped.
    
    To my knowledge, it is no longer possible to create constraints with the
    same name for the same relation. When you create a constraint and specify
    the same name explictly, an error is raised. Implicit constraint creation
    won't choose an existing name either and up to now you could not rename a
    constraint. Renaming works with the patch I sent in a few hours ago but this
    patch as well won't allow constraints with identical names on the same
    relation.
    
    The attached patch thus removes the note in the docs.
    
    Joachim Wieland


 doc/src/sgml/ref/alter_table.sgml | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index a588f847cef..58a4876f332 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -1,5 +1,5 @@
 <!--
-$PostgreSQL: pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.81 2005/08/24 17:24:19 tgl Exp $
+$PostgreSQL: pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.82 2005/12/08 21:35:36 momjian Exp $
 PostgreSQL documentation
 -->
 
@@ -183,10 +183,7 @@ where <replaceable class="PARAMETER">action</replaceable> is one of:
     <term><literal>DROP CONSTRAINT</literal></term>
     <listitem>
      <para>
-      This form drops constraints on a table.
-      Currently, constraints on tables are not required to have unique
-      names, so there may be more than one constraint matching the specified
-      name.  All matching constraints will be dropped.
+      This form drops the specified constraint on a table.
      </para>
     </listitem>
    </varlistentry>


[parent: c03aa1f9c9a5]