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
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