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5.3->5.5 merge
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@ -113,7 +113,7 @@ insert into t1 (b) values ("hello"),("my"),("world");
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create table t2 (key (b)) select * from t1;
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explain select * from t2 where b="world";
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ref B B 21 const 1 Using where
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1 SIMPLE t2 ref B B 21 const 1 Using index condition
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select * from t2 where b="world";
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a B
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3 world
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