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Bitmap index

From: <pejac(at)altern(dot)org>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Bitmap index
Date: 2000-12-04 08:09:01
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Lists: pgsql-hackers

on other RDBMS (Oracle,etc...),there is an index called bitmap index that
greatly improve performance compared to btree index for boolean value
(such as for a sex value,it's either M or F),i would like to know if such
index will be implemented inside PostgreSQL.

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