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authorunknown <sergefp@mysql.com>2006-09-18 14:49:54 +0400
committerunknown <sergefp@mysql.com>2006-09-18 14:49:54 +0400
commit5e34af32406bc9274dc6e58530f0272e2671e409 (patch)
treec9ea167b6014b2b17aa24282d7a2f3a7b3a5f6f4 /sql/item_sum.cc
parentb128cfa8516900b882da6826dc6a5fb633fdd359 (diff)
downloadmariadb-git-5e34af32406bc9274dc6e58530f0272e2671e409.tar.gz
BUG#22393: Very wrong E(#rows(ref(const)) for key with skewed distribution
- Check if we have E(#rows) for 'range' access on the smaller interval on the same index. If yes, adjust the estimate. mysql-test/r/range.result: BUG#22393: Testcase mysql-test/t/range.test: BUG#22393: Testcase
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