bitmap indices

From: Daniel Wisser <daniel.wisser_at_isis-papyrus.com>
Date: Mon, 29 Apr 2002 04:43:25 -0800
Message-ID: <F001.00451ADC.20020429044325@fatcity.com>

hi!

to speed up queries i have created a bitmap index on a column that contains 2 chars as a maximum. to my surprise the bitmap index does not make the query quicker than the 'usual' B-tree index, though there are only bout 100 different values in half a million rows.

has n.e.one got experience with bitmap indices? are there any further poosibilities to adapt them when creating???

tia & bye

daniel
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Author: Daniel Wisser
  INET: daniel.wisser_at_isis-papyrus.com

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