Re: Type conversions and nulls

Edmund Dengler  writes:
> What I want is an '=' that compares nulls as equal (rather than as
> not-equal, which is the normal case).

IS DISTINCT FROM may help you here.  It's a not-equals operator rather
than an equals operator, but it does what you want.

(Unless what you wanted included being able to use an index...)

			regards, tom lane