postgres/contrib/noupdate
Bruce Momjian 92288a1cf9 Change made to elog:
o  Change all current CVS messages of NOTICE to WARNING.  We were going
to do this just before 7.3 beta but it has to be done now, as you will
see below.

o Change current INFO messages that should be controlled by
client_min_messages to NOTICE.

o Force remaining INFO messages, like from EXPLAIN, VACUUM VERBOSE, etc.
to always go to the client.

o Remove INFO from the client_min_messages options and add NOTICE.

Seems we do need three non-ERROR elog levels to handle the various
behaviors we need for these messages.

Regression passed.
2002-03-06 06:10:59 +00:00
..
Makefile To fix the perpetually broken makefiles in the contrib tree, I have 2001-09-06 10:49:30 +00:00
noup.c Change made to elog: 2002-03-06 06:10:59 +00:00
noup.sql.in Revise handling of oldstyle/newstyle functions per recent discussions 2000-11-20 20:36:57 +00:00
README.noup Add missing /contrib files 2000-06-19 14:02:16 +00:00


noupdate
~~~~~~~~

 - trigger to prevent updates on single columns.


Example:
~~~~~~~

CREATE TABLE TEST ( COL1 INT, COL2 INT, COL3 INT );

CREATE TRIGGER BT BEFORE UPDATE ON TEST FOR EACH ROW
	EXECUTE PROCEDURE 
	noup ('COL1');

-- Now Try
INSERT INTO TEST VALUES (10,20,30);
UPDATE TEST SET COL1 = 5;