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From Nick Dimiduk <>
Subject Column Cardinality and Stats table as an "interface"
Date Thu, 14 Apr 2016 18:22:15 GMT

I'm curious if there are any tricks for estimating the cardinality of the
values in a phoenix column. Even for leading rowkey column, a select
distinct query on a large table requires a full scan (PHOENIX-258). Maybe
one could reach into the stats table and derive some knowledge? How much of
a "bad thing" would this be?


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