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