postgresql

History

Peter Eisentraut 805e431a38 Add support for VPATH builds, that is, building somewhere else than in the source directory. This involves mostly makefiles using $(srcdir) when they might have used ".". (Regression tests don't work with this, yet.) Sort out usage of CPPFLAGS, CFLAGS (and CXXFLAGS). Add "override" keyword in most places, to preserve necessary flags even when the user overrode the flags.		2000-10-20 21:04:27 +00:00
..
Makefile	Add support for VPATH builds, that is, building somewhere else than in the	2000-10-20 21:04:27 +00:00
README.noup	Add missing /contrib files	2000-06-19 14:02:16 +00:00
noup.c	Second round of fmgr changes: triggers are now invoked in new style,	2000-05-29 01:59:17 +00:00
noup.sql.in	Update to /contrib from Karel.	2000-06-19 13:54:50 +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;