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2. Correct some logical bugs within the tests, which were caused by automatic resolve of BitKeeper
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@ -99,8 +99,8 @@ CREATE TABLE `t2` (
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`id4` INT NOT NULL,
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UNIQUE (`id2`,`id4`),
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KEY (`id1`)
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) ENGINE=InnoDB;
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INSERT INTO `t2`(`id1`,`id2`,`id3`,`id4`) VALUES
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);
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INSERT INTO `t2`(`id1`,`id2`,`id3`,`id4`) VALUES
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(1,1,1,0),
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(1,1,2,1),
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(5,1,2,2),
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@ -271,6 +271,25 @@ explain select distinct f1, f2 from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 range NULL PRIMARY 5 NULL 3 Using index for group-by; Using temporary
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drop table t1;
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CREATE TABLE t1 (id int(11) NOT NULL PRIMARY KEY, name varchar(20),
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INDEX (name));
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CREATE TABLE t2 (id int(11) NOT NULL PRIMARY KEY, fkey int(11));
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ALTER TABLE t2 ADD FOREIGN KEY (fkey) REFERENCES t2(id);
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INSERT INTO t1 VALUES (1,'A1'),(2,'A2'),(3,'B');
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INSERT INTO t2 VALUES (1,1),(2,2),(3,2),(4,3),(5,3);
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EXPLAIN
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SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id
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WHERE t1.name LIKE 'A%';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index PRIMARY,name name 23 NULL 3 Using where; Using index
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1 SIMPLE t2 ref fkey fkey 5 test.t1.id 1 Using where; Using index
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EXPLAIN
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SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id
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WHERE t1.name LIKE 'A%' OR FALSE;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index NULL fkey 5 NULL 5 Using index
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1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.fkey 1 Using where
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DROP TABLE t1,t2;
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CREATE TABLE t1 (a int, b int);
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insert into t1 values (1,1),(1,2);
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CREATE TABLE t2 (primary key (a)) select * from t1;
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@ -340,7 +359,7 @@ CREATE TABLE `t2` (
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`c` int(11) default NULL,
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PRIMARY KEY (`k`),
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UNIQUE KEY `idx_1` (`a`)
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) ENGINE=InnoDB;
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);
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insert into t2 ( a ) values ( 6 ) on duplicate key update c =
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ifnull( c,
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0 ) + 1;
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