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Re: Patch to support SEMI and ANTI join removal - Mailing list pgsql-hackers

From David Rowley
Subject Re: Patch to support SEMI and ANTI join removal
Date
Msg-id CAApHDvqRzdxgW5BvzEtVuU0T_f8QDik2MfGHTdc6orTVzg+G4Q@mail.gmail.com
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In response to Patch to support SEMI and ANTI join removal  (David Rowley <dgrowleyml@gmail.com>)
Responses Re: Patch to support SEMI and ANTI join removal
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On Tue, Aug 5, 2014 at 10:35 PM, David Rowley <dgrowleyml@gmail.com> wrote:

The patch (attached) is also now able to detect when a NOT EXISTS clause cannot produce any records at all.


 I've attached an updated version of the patch which fixes up some incorrect logic in the foreign key matching code, plus various comment improvements.

Regards

David Rowley
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