On Mon, Feb 1, 2010 at 12:09 PM, Igor Neyman <[email protected]> wrote:
> Original poster asked for the sql that will touch inventory table only
> once.
>
> Your statement (with 3 subqueries) will do it 3 times.

I'm pretty sure that starting with 8.3 the engine will collapse all
those into one seq scan internally.

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