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Merge with 4.0
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@ -262,6 +262,23 @@ id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ref j1 j1 4 const 1 Using where; Using index
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1 SIMPLE t1 ALL i2 NULL NULL NULL 4 Range checked for each record (index map: 0x2)
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DROP TABLE t1,t2;
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CREATE TABLE t1 (
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a int(11) default NULL,
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b int(11) default NULL,
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KEY a (a),
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KEY b (b)
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) TYPE=MyISAM;
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INSERT INTO t1 VALUES
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(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(7,1),(8,1),(9,1),(10,2),(10,2),
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(13,2),(14,2),(15,2),(16,2),(17,3),(17,3),(16,3),(17,3),(19,3),(20,3),
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(21,4),(22,5),(23,5),(24,5),(25,5),(26,5),(30,5),(31,5),(32,5),(33,5),
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(33,5),(33,5),(33,5),(33,5),(34,5),(35,5);
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EXPLAIN SELECT * FROM t1 WHERE a IN(1,2) AND b=5;
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table type possible_keys key key_len ref rows Extra
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t1 range a,b a 5 NULL 2 Using where
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SELECT * FROM t1 WHERE a IN(1,2) AND b=5;
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a b
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DROP TABLE t1;
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create table t1 (id int(10) primary key);
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insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9);
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select id from t1 where id in (2,5,9) ;
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