On Jun 5, 2010, at 9:46 AM, Ken Winter wrote:

> I get it.  Thanks, Tom.
> 
> In case anybody else needs this functionality, let me offer a family of
> functions that do comparisons that treat NULL as a real value (rather than
> as "unknown").  For example:

You should take a look at "is not distinct from".

> 
> The reason I need this is that I'm writing functions to test my database
> programming (triggers, rules, etc), and these tests sometimes need to treat
> Null as just another value in doing test comparisons.

You also might find http://pgtap.org/ useful.

Cheers,
  Steve


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