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Merge mysql.com:/home/hf/work/mysql-5.0-mrg
into mysql.com:/home/hf/work/mysql-5.1-mrg
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@ -3001,6 +3001,38 @@ field1 field2
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1 1
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1 3
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DROP TABLE t1, t2;
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CREATE TABLE t1(a int, INDEX (a));
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INSERT INTO t1 VALUES (1), (3), (5), (7);
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INSERT INTO t1 VALUES (NULL);
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CREATE TABLE t2(a int);
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INSERT INTO t2 VALUES (1),(2),(3);
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EXPLAIN SELECT a, a IN (SELECT a FROM t1) FROM t2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 3
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2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 Using index
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SELECT a, a IN (SELECT a FROM t1) FROM t2;
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a a IN (SELECT a FROM t1)
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1 1
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2 NULL
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3 1
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DROP TABLE t1,t2;
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CREATE TABLE t1 (a DATETIME);
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INSERT INTO t1 VALUES ('1998-09-23'), ('2003-03-25');
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CREATE TABLE t2 AS SELECT
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(SELECT a FROM t1 WHERE a < '2000-01-01') AS sub_a
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FROM t1 WHERE a > '2000-01-01';
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SHOW CREATE TABLE t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`sub_a` datetime default NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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CREATE TABLE t3 AS (SELECT a FROM t1 WHERE a < '2000-01-01') UNION (SELECT a FROM t1 WHERE a > '2000-01-01');
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SHOW CREATE TABLE t3;
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Table Create Table
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t3 CREATE TABLE `t3` (
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`a` datetime default NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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DROP TABLE t1,t2,t3;
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create table t1 (df decimal(5,1));
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insert into t1 values(1.1);
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insert into t1 values(2.2);
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