"D. Dante Lorenso" <[EMAIL PROTECTED]> writes:
> I'm looking for an operator that will compare NULL with NULL and 
> evaluate as TRUE.

regression=# select null IS NOT DISTINCT FROM 42;
 ?column? 
----------
 f
(1 row)

regression=# select null IS NOT DISTINCT FROM null;
 ?column? 
----------
 t
(1 row)

However, if you're expecting this to be real efficient (like, use an
index), you're out of luck ...

> If the value I'm comparing is 0, I want it to match the NULL values.

[ raised eyebrow... ]  Sir, you need to rethink your data
representation.

                        regards, tom lane

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