postgresql

History

Tom Lane 5bb2300b59 Revise handling of oldstyle/newstyle functions per recent discussions in pghackers list. Support for oldstyle internal functions is gone (no longer needed, since conversion is complete) and pg_language entry 'internal' now implies newstyle call convention. pg_language entry 'newC' is gone; both old and newstyle dynamically loaded C functions are now called language 'C'. A newstyle function must be identified by an associated info routine. See src/backend/utils/fmgr/README.		2000-11-20 20:36:57 +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	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


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;