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postgres/contrib/noupdate
History
Bruce Momjian aa4c702eac
Update /contrib for "autocommit TO 'on'". 		23 years ago
..
Makefile To fix the perpetually broken makefiles in the contrib tree, I have 24 years ago
README.noup Add missing /contrib files 26 years ago
noup.c Change made to elog: 24 years ago
noup.sql.in Update /contrib for "autocommit TO 'on'". 23 years ago

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;