postgresql/contrib/noupdate
Peter Eisentraut 17cc78ef01 To fix the perpetually broken makefiles in the contrib tree, I have
written a generic framework of rules that the contrib makefiles can
use instead of writing their own each time.  You only need to set a few
variables and off you go.
2001-09-06 10:49:30 +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 Revise handling of oldstyle/newstyle functions per recent discussions 2000-11-20 20:36:57 +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;