postgresql/contrib/noupdate
Tom Lane ec8576114f Some more gitignore cleanups: cover contrib and PL regression test outputs.
Also do some further work in the back branches, where quite a bit wasn't
covered by Magnus' original back-patch.
2010-09-22 17:22:31 -04:00
..
.gitignore Some more gitignore cleanups: cover contrib and PL regression test outputs. 2010-09-22 17:22:31 -04:00
Makefile To fix the perpetually broken makefiles in the contrib tree, I have 2001-09-06 10:49:30 +00:00
README.noup Add missing /contrib files 2000-06-19 14:02:16 +00:00
noup.c Error message editing in contrib (mostly by Joe Conway --- thanks Joe!) 2003-07-24 17:52:50 +00:00
noup.sql.in Backend support for autocommit removed, per recent discussions. The 2003-05-14 03:26:03 +00:00

README.noup


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;