>>> On Mon, Oct 22, 2007 at  4:37 PM, in message
<[EMAIL PROTECTED]>, "Kevin Grittner"

> One more logically equivalent, PostgreSQL-specific form which
> costs out even better was suggested off-list:

Oops.  That is not logically equivalent.  We want to delete WHERE NOT
EXISTS; the logic of that suggestion is backwards.

Disregard that last post, please.

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