Re: Transform_Null_Equals does not work in Functions

Daniel Schuchardt <d(dot)schuchardt(at)prodat-sql(dot)de> writes:
> CREATE OR REPLACE FUNCTION show_transform_problem(with_transform BOOL)
> RETURNS BOOL AS $$
> DECLARE result BOOL;
> BEGIN
> IF with_transform THEN
> SET transform_null_equals TO ON;
> END IF;
> RESULT:=NULL=1;
> SET transform_null_equals TO OFF;
> RETURN result;
> END $$ LANGUAGE plpgsql;

That isn't going to work unless you EXECUTE the target statement, so
that it's re-parsed from scratch every time.

It's highly unlikely that transform_null_equals will solve your problem
anyway. Find a more standards-compliant way.

regards, tom lane