RE: pgsql is 75 times faster with my new index scan - Mailing list pgsql-hackers

From Mikheev, Vadim
Subject RE: pgsql is 75 times faster with my new index scan
Date
Msg-id 8F4C99C66D04D4118F580090272A7A23018D0F@SECTORBASE1
Whole thread Raw
In response to pgsql is 75 times faster with my new index scan  (devik@cdi.cz)
List pgsql-hackers
> > Indice's TIDs are transient.
> > Isn't it useless to store indice's TIDs ?
> 
> but yes Hiroshi is right. Index TID is transient. I first looked
> into pg sources two weeks ago so I have still holes in my knowledge.
> So that only solution is to traverse it ..

It was discussed several times for btree - add heap tid to index key and
you'll
scan index for particulare tuple much faster.
Not sure what could be done for hash indices... order hash items with the
same hash key?

Vadim


pgsql-hackers by date:

Previous
From: "Mikheev, Vadim"
Date:
Subject: RE: pgsql is 75 times faster with my new index scan
Next
From: "Mikheev, Vadim"
Date:
Subject: RE: Damn, pg_proc index corrupted, can't find anythign on REINDEX ...