Re: Indexam interface proposal - Mailing list pgsql-hackers

From Teodor Sigaev
Subject Re: Indexam interface proposal
Date
Msg-id 45FE92E4.8020201@sigaev.ru
Whole thread Raw
In response to Re: Indexam interface proposal  (Heikki Linnakangas <heikki@enterprisedb.com>)
Responses Re: Indexam interface proposal  (Heikki Linnakangas <heikki@enterprisedb.com>)
Re: Indexam interface proposal  (Martijn van Oosterhout <kleptog@svana.org>)
List pgsql-hackers
> Right, except that flag is per operator in operator class, and what I'm 
> proposing is that the index could pass a flag per tuple in the scan. 

That might make sense even for GiST. Sometimes complex compressions is used in 
GiST opclasses. If indexing value is rather small then it's stored in index as 
is, but large value is compressed with lossy techniques. So, GiST might return a 
tuple which is allowed to not recheck.
-- 
Teodor Sigaev                                   E-mail: teodor@sigaev.ru
  WWW: http://www.sigaev.ru/
 


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