Re: Index AM change proposals, redux - Mailing list pgsql-hackers

From Gregory Stark
Subject Re: Index AM change proposals, redux
Date
Msg-id 878wzmusje.fsf@oxford.xeocode.com
Whole thread Raw
In response to Re: Index AM change proposals, redux  (Bruce Momjian <bruce@momjian.us>)
List pgsql-hackers

>> * Proposed changes to allow amgetnext to return the actual index keys,
>> allowing certain types of "unindexable" quals to be checked without
>> having to fetch the heap entry.  For example a LIKE condition could be
>> fully checked against the index entry.  

In the extreme we could build tuples and push them up several nodes -- even
including joins -- before fetching the rest of the attributes from the heap.

--  Gregory Stark EnterpriseDB          http://www.enterprisedb.com Get trained by Bruce Momjian - ask me about
EnterpriseDB'sPostgreSQL training!
 


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