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* Create 'main' test directory and move 't' and 'r' thereMichael Widenius2018-03-291-45/+0
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* Back-port from 6.0 of the fix forGuilhem Bichot2009-10-191-0/+45
BUG#38049 "incorrect rows estimations with references from preceding table" (from revid:sergefp@mysql.com-20090126194259-ue20il3qro529l4d). Compared to 6.0 where EXPLAIN indicates "Using index condition", here in join_optimizer.result we see "Using where"; it's normal; 6.0 shows the same if disabling Index Condition Pushdown.