inverse OR distributive law? - Mailing list pgsql-hackers

From Tatsuo Ishii
Subject inverse OR distributive law?
Date
Msg-id 20050914.080216.70224585.ishii@sraoss.co.jp
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Responses Re: inverse OR distributive law?
List pgsql-hackers
Hi,

I have been looking around optimizer's code and found a comment:

/** process_duplicate_ors*      Given a list of exprs which are ORed together, try to apply*      the inverse OR
distributivelaw.
 

Anybody enlighten what "inverse OR distributive law" is?
--
SRA OSS, Inc. Japan
Tatsuo Ishii


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