CVSROOT:	/cvsroot
Module name:	pgsql-server
Changes by:	tgl(at)svr1(dot)postgresql(dot)org	03/10/06 13:38:28

Modified files:
	src/backend/commands: tablecmds.c 
	src/backend/utils/adt: ri_triggers.c 
	src/include/commands: trigger.h 

Log message:
	During ALTER TABLE ADD FOREIGN KEY, try to check the existing rows using
	a single LEFT JOIN query instead of firing the check trigger for each
	row individually.  Stephan Szabo, with some kibitzing from Tom Lane and
	Jan Wieck.

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