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5f5d1507ec
2. Correct some logical bugs within the tests, which were caused by automatic resolve of BitKeeper
584 lines
20 KiB
Plaintext
584 lines
20 KiB
Plaintext
#---------------- Index merge test 2 -------------------------------------------
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SET SESSION STORAGE_ENGINE = InnoDB;
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drop table if exists t1,t2;
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create table t1
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(
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key1 int not null,
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key2 int not null,
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INDEX i1(key1),
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INDEX i2(key2)
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);
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explain select * from t1 where key1 < 5 or key2 > 197;
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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_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
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select * from t1 where key1 < 5 or key2 > 197;
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key1 key2
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0 200
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1 199
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2 198
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3 197
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4 196
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explain select * from t1 where key1 < 3 or key2 > 195;
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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_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
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select * from t1 where key1 < 3 or key2 > 195;
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key1 key2
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0 200
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1 199
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2 198
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3 197
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4 196
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alter table t1 add str1 char (255) not null,
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add zeroval int not null default 0,
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add str2 char (255) not null,
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add str3 char (255) not null;
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update t1 set str1='aaa', str2='bbb', str3=concat(key2, '-', key1 div 2, '_' ,if(key1 mod 2 = 0, 'a', 'A'));
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alter table t1 add primary key (str1, zeroval, str2, str3);
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explain select * from t1 where key1 < 5 or key2 > 197;
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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_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
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select * from t1 where key1 < 5 or key2 > 197;
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key1 key2 str1 zeroval str2 str3
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4 196 aaa 0 bbb 196-2_a
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3 197 aaa 0 bbb 197-1_A
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2 198 aaa 0 bbb 198-1_a
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1 199 aaa 0 bbb 199-0_A
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0 200 aaa 0 bbb 200-0_a
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explain select * from t1 where key1 < 3 or key2 > 195;
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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_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
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select * from t1 where key1 < 3 or key2 > 195;
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key1 key2 str1 zeroval str2 str3
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4 196 aaa 0 bbb 196-2_a
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3 197 aaa 0 bbb 197-1_A
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2 198 aaa 0 bbb 198-1_a
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1 199 aaa 0 bbb 199-0_A
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0 200 aaa 0 bbb 200-0_a
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drop table t1;
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create table t1 (
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pk integer not null auto_increment primary key,
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key1 integer,
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key2 integer not null,
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filler char (200),
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index (key1),
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index (key2)
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);
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show warnings;
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Level Code Message
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explain select pk from t1 where key1 = 1 and key2 = 1;
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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_merge key1,key2 key1,key2 5,4 NULL 1 Using intersect(key1,key2); Using where; Using index
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select pk from t1 where key2 = 1 and key1 = 1;
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pk
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26
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27
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select pk from t1 ignore index(key1,key2) where key2 = 1 and key1 = 1;
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pk
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26
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27
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drop table t1;
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create table t1 (
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pk int primary key auto_increment,
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key1a int,
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key2a int,
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key1b int,
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key2b int,
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dummy1 int,
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dummy2 int,
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dummy3 int,
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dummy4 int,
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key3a int,
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key3b int,
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filler1 char (200),
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index i1(key1a, key1b),
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index i2(key2a, key2b),
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index i3(key3a, key3b)
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);
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create table t2 (a int);
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insert into t2 values (0),(1),(2),(3),(4),(NULL);
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insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
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select A.a, B.a, C.a, D.a, C.a, D.a from t2 A,t2 B,t2 C, t2 D;
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insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
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select key1a, key1b, key2a, key2b, key3a, key3b from t1;
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insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
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select key1a, key1b, key2a, key2b, key3a, key3b from t1;
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analyze table t1;
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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select count(*) from t1;
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count(*)
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5184
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explain select count(*) from t1 where
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key1a = 2 and key1b is null and key2a = 2 and key2b is null;
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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_merge i1,i2 i1,i2 10,10 NULL 4 Using intersect(i1,i2); Using where; Using index
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select count(*) from t1 where
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key1a = 2 and key1b is null and key2a = 2 and key2b is null;
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count(*)
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4
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explain select count(*) from t1 where
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key1a = 2 and key1b is null and key3a = 2 and key3b is null;
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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_merge i1,i3 i1,i3 10,10 NULL 4 Using intersect(i1,i3); Using where; Using index
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select count(*) from t1 where
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key1a = 2 and key1b is null and key3a = 2 and key3b is null;
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count(*)
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4
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drop table t1,t2;
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create table t1 (
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id1 int,
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id2 date ,
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index idx2 (id1,id2),
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index idx1 (id2)
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);
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insert into t1 values(1,'20040101'), (2,'20040102');
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select * from t1 where id1 = 1 and id2= '20040101';
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id1 id2
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1 2004-01-01
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drop table t1;
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drop view if exists v1;
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CREATE TABLE t1 (
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`oid` int(11) unsigned NOT NULL auto_increment,
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`fk_bbk_niederlassung` int(11) unsigned NOT NULL,
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`fk_wochentag` int(11) unsigned NOT NULL,
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`uhrzeit_von` time NOT NULL COMMENT 'HH:MM',
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`uhrzeit_bis` time NOT NULL COMMENT 'HH:MM',
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`geloescht` tinyint(4) NOT NULL,
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`version` int(5) NOT NULL,
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PRIMARY KEY (`oid`),
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KEY `fk_bbk_niederlassung` (`fk_bbk_niederlassung`),
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KEY `fk_wochentag` (`fk_wochentag`),
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KEY `ix_version` (`version`)
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) DEFAULT CHARSET=latin1;
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insert into t1 values
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(1, 38, 1, '08:00:00', '13:00:00', 0, 1),
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(2, 38, 2, '08:00:00', '13:00:00', 0, 1),
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(3, 38, 3, '08:00:00', '13:00:00', 0, 1),
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(4, 38, 4, '08:00:00', '13:00:00', 0, 1),
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(5, 38, 5, '08:00:00', '13:00:00', 0, 1),
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(6, 38, 5, '08:00:00', '13:00:00', 1, 2),
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(7, 38, 3, '08:00:00', '13:00:00', 1, 2),
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(8, 38, 1, '08:00:00', '13:00:00', 1, 2),
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(9, 38, 2, '08:00:00', '13:00:00', 1, 2),
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(10, 38, 4, '08:00:00', '13:00:00', 1, 2),
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(11, 38, 1, '08:00:00', '13:00:00', 0, 3),
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(12, 38, 2, '08:00:00', '13:00:00', 0, 3),
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(13, 38, 3, '08:00:00', '13:00:00', 0, 3),
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(14, 38, 4, '08:00:00', '13:00:00', 0, 3),
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(15, 38, 5, '08:00:00', '13:00:00', 0, 3),
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(16, 38, 4, '08:00:00', '13:00:00', 0, 4),
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(17, 38, 5, '08:00:00', '13:00:00', 0, 4),
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(18, 38, 1, '08:00:00', '13:00:00', 0, 4),
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(19, 38, 2, '08:00:00', '13:00:00', 0, 4),
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(20, 38, 3, '08:00:00', '13:00:00', 0, 4),
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(21, 7, 1, '08:00:00', '13:00:00', 0, 1),
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(22, 7, 2, '08:00:00', '13:00:00', 0, 1),
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(23, 7, 3, '08:00:00', '13:00:00', 0, 1),
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(24, 7, 4, '08:00:00', '13:00:00', 0, 1),
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(25, 7, 5, '08:00:00', '13:00:00', 0, 1);
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create view v1 as
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select
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zeit1.oid AS oid,
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zeit1.fk_bbk_niederlassung AS fk_bbk_niederlassung,
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zeit1.fk_wochentag AS fk_wochentag,
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zeit1.uhrzeit_von AS uhrzeit_von,
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zeit1.uhrzeit_bis AS uhrzeit_bis,
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zeit1.geloescht AS geloescht,
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zeit1.version AS version
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from
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t1 zeit1
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where
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(zeit1.version =
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(select max(zeit2.version) AS `max(version)`
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from t1 zeit2
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where
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((zeit1.fk_bbk_niederlassung = zeit2.fk_bbk_niederlassung) and
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(zeit1.fk_wochentag = zeit2.fk_wochentag) and
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(zeit1.uhrzeit_von = zeit2.uhrzeit_von) and
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(zeit1.uhrzeit_bis = zeit2.uhrzeit_bis)
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)
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)
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)
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and (zeit1.geloescht = 0);
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select * from v1 where oid = 21;
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oid fk_bbk_niederlassung fk_wochentag uhrzeit_von uhrzeit_bis geloescht version
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21 7 1 08:00:00 13:00:00 0 1
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drop view v1;
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drop table t1;
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CREATE TABLE t1(
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t_cpac varchar(2) NOT NULL,
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t_vers varchar(4) NOT NULL,
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t_rele varchar(2) NOT NULL,
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t_cust varchar(4) NOT NULL,
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filler1 char(250) default NULL,
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filler2 char(250) default NULL,
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PRIMARY KEY (t_cpac,t_vers,t_rele,t_cust),
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UNIQUE KEY IX_4 (t_cust,t_cpac,t_vers,t_rele),
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KEY IX_5 (t_vers,t_rele,t_cust)
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);
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insert into t1 values
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('tm','2.5 ','a ',' ','',''), ('tm','2.5U','a ','stnd','',''),
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('da','3.3 ','b ',' ','',''), ('da','3.3U','b ','stnd','',''),
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('tl','7.6 ','a ',' ','',''), ('tt','7.6 ','a ',' ','',''),
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('bc','B61 ','a ',' ','',''), ('bp','B61 ','a ',' ','',''),
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('ca','B61 ','a ',' ','',''), ('ci','B61 ','a ',' ','',''),
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('cp','B61 ','a ',' ','',''), ('dm','B61 ','a ',' ','',''),
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('ec','B61 ','a ',' ','',''), ('ed','B61 ','a ',' ','',''),
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('fm','B61 ','a ',' ','',''), ('nt','B61 ','a ',' ','',''),
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('qm','B61 ','a ',' ','',''), ('tc','B61 ','a ',' ','',''),
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('td','B61 ','a ',' ','',''), ('tf','B61 ','a ',' ','',''),
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('tg','B61 ','a ',' ','',''), ('ti','B61 ','a ',' ','',''),
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('tp','B61 ','a ',' ','',''), ('ts','B61 ','a ',' ','',''),
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('wh','B61 ','a ',' ','',''), ('bc','B61U','a ','stnd','',''),
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('bp','B61U','a ','stnd','',''), ('ca','B61U','a ','stnd','',''),
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('ci','B61U','a ','stnd','',''), ('cp','B61U','a ','stnd','',''),
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('dm','B61U','a ','stnd','',''), ('ec','B61U','a ','stnd','',''),
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('fm','B61U','a ','stnd','',''), ('nt','B61U','a ','stnd','',''),
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('qm','B61U','a ','stnd','',''), ('tc','B61U','a ','stnd','',''),
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('td','B61U','a ','stnd','',''), ('tf','B61U','a ','stnd','',''),
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('tg','B61U','a ','stnd','',''), ('ti','B61U','a ','stnd','',''),
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('tp','B61U','a ','stnd','',''), ('ts','B61U','a ','stnd','',''),
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('wh','B61U','a ','stnd','','');
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`t_cpac` varchar(2) NOT NULL,
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`t_vers` varchar(4) NOT NULL,
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`t_rele` varchar(2) NOT NULL,
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`t_cust` varchar(4) NOT NULL,
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`filler1` char(250) DEFAULT NULL,
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`filler2` char(250) DEFAULT NULL,
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PRIMARY KEY (`t_cpac`,`t_vers`,`t_rele`,`t_cust`),
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UNIQUE KEY `IX_4` (`t_cust`,`t_cpac`,`t_vers`,`t_rele`),
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KEY `IX_5` (`t_vers`,`t_rele`,`t_cust`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6';
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t_vers t_rele t_cust filler1
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7.6 a
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7.6 a
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select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6'
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and t_rele='a' and t_cust = ' ';
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t_vers t_rele t_cust filler1
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7.6 a
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7.6 a
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drop table t1;
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create table t1 (
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pk int(11) not null auto_increment,
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a int(11) not null default '0',
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b int(11) not null default '0',
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c int(11) not null default '0',
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filler1 datetime, filler2 varchar(15),
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filler3 longtext,
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kp1 varchar(4), kp2 varchar(7),
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kp3 varchar(2), kp4 varchar(4),
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kp5 varchar(7),
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filler4 char(1),
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primary key (pk),
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key idx1(a,b,c),
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key idx2(c),
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key idx3(kp1,kp2,kp3,kp4,kp5)
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) default charset=latin1;
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set @fill=NULL;
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SELECT COUNT(*) FROM t1 WHERE b = 0 AND a = 0 AND c = 13286427 AND
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kp1='279' AND kp2='ELM0678' AND kp3='6' AND kp4='10' AND kp5 = 'R ';
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COUNT(*)
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1
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drop table t1;
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create table t1
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(
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key1 int not null,
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key2 int not null default 0,
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key3 int not null default 0
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);
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insert into t1(key1) values (1),(2),(3),(4),(5),(6),(7),(8);
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set @d=8;
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insert into t1 (key1) select key1+@d from t1;
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set @d=@d*2;
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insert into t1 (key1) select key1+@d from t1;
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set @d=@d*2;
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insert into t1 (key1) select key1+@d from t1;
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set @d=@d*2;
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insert into t1 (key1) select key1+@d from t1;
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set @d=@d*2;
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insert into t1 (key1) select key1+@d from t1;
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set @d=@d*2;
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insert into t1 (key1) select key1+@d from t1;
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set @d=@d*2;
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insert into t1 (key1) select key1+@d from t1;
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set @d=@d*2;
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alter table t1 add index i2(key2);
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alter table t1 add index i3(key3);
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update t1 set key2=key1,key3=key1;
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explain select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
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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_merge i2,i3 i3,i2 4,4 NULL 9 Using sort_union(i3,i2); Using where
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select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
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key1 key2 key3
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31 31 31
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32 32 32
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33 33 33
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34 34 34
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35 35 35
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36 36 36
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37 37 37
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38 38 38
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39 39 39
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drop table t1;
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#---------------- 2-sweeps read Index merge test 2 -------------------------------
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SET SESSION STORAGE_ENGINE = InnoDB;
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drop table if exists t1;
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create table t1 (
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pk int primary key,
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key1 int,
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key2 int,
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filler char(200),
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filler2 char(200),
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index(key1),
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index(key2)
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);
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select * from t1 where (key1 >= 2 and key1 <= 10) or (pk >= 4 and pk <=8 );
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pk key1 key2 filler filler2
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2 2 2 filler-data filler-data-2
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3 3 3 filler-data filler-data-2
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9 9 9 filler-data filler-data-2
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10 10 10 filler-data filler-data-2
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4 4 4 filler-data filler-data-2
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5 5 5 filler-data filler-data-2
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6 6 6 filler-data filler-data-2
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7 7 7 filler-data filler-data-2
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8 8 8 filler-data filler-data-2
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set @maxv=1000;
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select * from t1 where
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(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
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or key1=18 or key1=60;
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pk key1 key2 filler filler2
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18 18 18 filler-data filler-data-2
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60 60 60 filler-data filler-data-2
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1 1 1 filler-data filler-data-2
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2 2 2 filler-data filler-data-2
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3 3 3 filler-data filler-data-2
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4 4 4 filler-data filler-data-2
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11 11 11 filler-data filler-data-2
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12 12 12 filler-data filler-data-2
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13 13 13 filler-data filler-data-2
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14 14 14 filler-data filler-data-2
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50 50 50 filler-data filler-data-2
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51 51 51 filler-data filler-data-2
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52 52 52 filler-data filler-data-2
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53 53 53 filler-data filler-data-2
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54 54 54 filler-data filler-data-2
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991 991 991 filler-data filler-data-2
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992 992 992 filler-data filler-data-2
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993 993 993 filler-data filler-data-2
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994 994 994 filler-data filler-data-2
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995 995 995 filler-data filler-data-2
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996 996 996 filler-data filler-data-2
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997 997 997 filler-data filler-data-2
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998 998 998 filler-data filler-data-2
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999 999 999 filler-data filler-data-2
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1000 1000 1000 filler-data filler-data-2
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select * from t1 where
|
|
(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
|
|
or key1 < 3 or key1 > @maxv-11;
|
|
pk key1 key2 filler filler2
|
|
990 990 990 filler-data filler-data-2
|
|
1 1 1 filler-data filler-data-2
|
|
2 2 2 filler-data filler-data-2
|
|
3 3 3 filler-data filler-data-2
|
|
4 4 4 filler-data filler-data-2
|
|
11 11 11 filler-data filler-data-2
|
|
12 12 12 filler-data filler-data-2
|
|
13 13 13 filler-data filler-data-2
|
|
14 14 14 filler-data filler-data-2
|
|
50 50 50 filler-data filler-data-2
|
|
51 51 51 filler-data filler-data-2
|
|
52 52 52 filler-data filler-data-2
|
|
53 53 53 filler-data filler-data-2
|
|
54 54 54 filler-data filler-data-2
|
|
991 991 991 filler-data filler-data-2
|
|
992 992 992 filler-data filler-data-2
|
|
993 993 993 filler-data filler-data-2
|
|
994 994 994 filler-data filler-data-2
|
|
995 995 995 filler-data filler-data-2
|
|
996 996 996 filler-data filler-data-2
|
|
997 997 997 filler-data filler-data-2
|
|
998 998 998 filler-data filler-data-2
|
|
999 999 999 filler-data filler-data-2
|
|
1000 1000 1000 filler-data filler-data-2
|
|
select * from t1 where
|
|
(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
|
|
or
|
|
(key1 < 5) or (key1 > 10 and key1 < 15) or (key1 >= 50 and key1 < 55 ) or (key1 > @maxv-10);
|
|
pk key1 key2 filler filler2
|
|
1 1 1 filler-data filler-data-2
|
|
2 2 2 filler-data filler-data-2
|
|
3 3 3 filler-data filler-data-2
|
|
4 4 4 filler-data filler-data-2
|
|
11 11 11 filler-data filler-data-2
|
|
12 12 12 filler-data filler-data-2
|
|
13 13 13 filler-data filler-data-2
|
|
14 14 14 filler-data filler-data-2
|
|
50 50 50 filler-data filler-data-2
|
|
51 51 51 filler-data filler-data-2
|
|
52 52 52 filler-data filler-data-2
|
|
53 53 53 filler-data filler-data-2
|
|
54 54 54 filler-data filler-data-2
|
|
991 991 991 filler-data filler-data-2
|
|
992 992 992 filler-data filler-data-2
|
|
993 993 993 filler-data filler-data-2
|
|
994 994 994 filler-data filler-data-2
|
|
995 995 995 filler-data filler-data-2
|
|
996 996 996 filler-data filler-data-2
|
|
997 997 997 filler-data filler-data-2
|
|
998 998 998 filler-data filler-data-2
|
|
999 999 999 filler-data filler-data-2
|
|
1000 1000 1000 filler-data filler-data-2
|
|
select * from t1 where
|
|
(pk > 10 and pk < 15) or (pk >= 50 and pk < 55 )
|
|
or
|
|
(key1 < 5) or (key1 > @maxv-10);
|
|
pk key1 key2 filler filler2
|
|
1 1 1 filler-data filler-data-2
|
|
2 2 2 filler-data filler-data-2
|
|
3 3 3 filler-data filler-data-2
|
|
4 4 4 filler-data filler-data-2
|
|
991 991 991 filler-data filler-data-2
|
|
992 992 992 filler-data filler-data-2
|
|
993 993 993 filler-data filler-data-2
|
|
994 994 994 filler-data filler-data-2
|
|
995 995 995 filler-data filler-data-2
|
|
996 996 996 filler-data filler-data-2
|
|
997 997 997 filler-data filler-data-2
|
|
998 998 998 filler-data filler-data-2
|
|
999 999 999 filler-data filler-data-2
|
|
1000 1000 1000 filler-data filler-data-2
|
|
11 11 11 filler-data filler-data-2
|
|
12 12 12 filler-data filler-data-2
|
|
13 13 13 filler-data filler-data-2
|
|
14 14 14 filler-data filler-data-2
|
|
50 50 50 filler-data filler-data-2
|
|
51 51 51 filler-data filler-data-2
|
|
52 52 52 filler-data filler-data-2
|
|
53 53 53 filler-data filler-data-2
|
|
54 54 54 filler-data filler-data-2
|
|
drop table t1;
|
|
#---------------- Clustered PK ROR-index_merge tests -----------------------------
|
|
SET SESSION STORAGE_ENGINE = InnoDB;
|
|
drop table if exists t1;
|
|
create table t1
|
|
(
|
|
pk1 int not null,
|
|
pk2 int not null,
|
|
key1 int not null,
|
|
key2 int not null,
|
|
pktail1ok int not null,
|
|
pktail2ok int not null,
|
|
pktail3bad int not null,
|
|
pktail4bad int not null,
|
|
pktail5bad int not null,
|
|
pk2copy int not null,
|
|
badkey int not null,
|
|
filler1 char (200),
|
|
filler2 char (200),
|
|
key (key1),
|
|
key (key2),
|
|
/* keys with tails from CPK members */
|
|
key (pktail1ok, pk1),
|
|
key (pktail2ok, pk1, pk2),
|
|
key (pktail3bad, pk2, pk1),
|
|
key (pktail4bad, pk1, pk2copy),
|
|
key (pktail5bad, pk1, pk2, pk2copy),
|
|
primary key (pk1, pk2)
|
|
);
|
|
explain select * from t1 where pk1 = 1 and pk2 < 80 and key1=0;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 range PRIMARY,key1 PRIMARY 8 NULL 9 Using where
|
|
select * from t1 where pk1 = 1 and pk2 < 80 and key1=0;
|
|
pk1 pk2 key1 key2 pktail1ok pktail2ok pktail3bad pktail4bad pktail5bad pk2copy badkey filler1 filler2
|
|
1 10 0 0 0 0 0 0 0 10 0 filler-data-10 filler2
|
|
1 11 0 0 0 0 0 0 0 11 0 filler-data-11 filler2
|
|
1 12 0 0 0 0 0 0 0 12 0 filler-data-12 filler2
|
|
1 13 0 0 0 0 0 0 0 13 0 filler-data-13 filler2
|
|
1 14 0 0 0 0 0 0 0 14 0 filler-data-14 filler2
|
|
1 15 0 0 0 0 0 0 0 15 0 filler-data-15 filler2
|
|
1 16 0 0 0 0 0 0 0 16 0 filler-data-16 filler2
|
|
1 17 0 0 0 0 0 0 0 17 0 filler-data-17 filler2
|
|
1 18 0 0 0 0 0 0 0 18 0 filler-data-18 filler2
|
|
1 19 0 0 0 0 0 0 0 19 0 filler-data-19 filler2
|
|
explain select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index_merge key1,key2 key1,key2 4,4 NULL 1 Using intersect(key1,key2); Using where; Using index
|
|
select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
|
|
pk1 pk2
|
|
95 50
|
|
95 51
|
|
95 52
|
|
95 53
|
|
95 54
|
|
95 55
|
|
95 56
|
|
95 57
|
|
95 58
|
|
95 59
|
|
explain select * from t1 where badkey=1 and key1=10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref key1 key1 4 const 100 Using where
|
|
explain select * from t1 where pk1 < 7500 and key1 = 10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index_merge PRIMARY,key1 key1,PRIMARY 4,4 NULL ROWS Using intersect(key1,PRIMARY); Using where
|
|
explain select * from t1 where pktail1ok=1 and key1=10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index_merge key1,pktail1ok key1,pktail1ok 4,4 NULL 1 Using intersect(key1,pktail1ok); Using where
|
|
explain select * from t1 where pktail2ok=1 and key1=10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index_merge key1,pktail2ok key1,pktail2ok 4,4 NULL 1 Using intersect(key1,pktail2ok); Using where
|
|
explain select * from t1 where (pktail2ok=1 and pk1< 50000) or key1=10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index_merge PRIMARY,key1,pktail2ok pktail2ok,key1 8,4 NULL 199 Using sort_union(pktail2ok,key1); Using where
|
|
explain select * from t1 where pktail3bad=1 and key1=10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref key1,pktail3bad key1 4 const 100 Using where
|
|
explain select * from t1 where pktail4bad=1 and key1=10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref key1,pktail4bad key1 4 const 100 Using where
|
|
explain select * from t1 where pktail5bad=1 and key1=10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref key1,pktail5bad key1 4 const 100 Using where
|
|
explain select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index_merge key1,key2 key1,key2 4,4 NULL 1 Using intersect(key1,key2); Using where; Using index
|
|
select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
|
|
pk1 pk2 key1 key2
|
|
95 50 10 10
|
|
95 51 10 10
|
|
95 52 10 10
|
|
95 53 10 10
|
|
95 54 10 10
|
|
95 55 10 10
|
|
95 56 10 10
|
|
95 57 10 10
|
|
95 58 10 10
|
|
95 59 10 10
|
|
drop table t1;
|
|
create table t1
|
|
(
|
|
RUNID varchar(22),
|
|
SUBMITNR varchar(5),
|
|
ORDERNR char(1),
|
|
PROGRAMM varchar(8),
|
|
TESTID varchar(4),
|
|
UCCHECK char(1),
|
|
ETEXT varchar(80),
|
|
ETEXT_TYPE char(1),
|
|
INFO char(1),
|
|
SEVERITY tinyint(3),
|
|
TADIRFLAG char(1),
|
|
PRIMARY KEY (RUNID,SUBMITNR,ORDERNR,PROGRAMM,TESTID,UCCHECK),
|
|
KEY `TVERM~KEY` (PROGRAMM,TESTID,UCCHECK)
|
|
) DEFAULT CHARSET=latin1;
|
|
update t1 set `ETEXT` = '', `ETEXT_TYPE`='', `INFO`='', `SEVERITY`='', `TADIRFLAG`=''
|
|
WHERE
|
|
`RUNID`= '' AND `SUBMITNR`= '' AND `ORDERNR`='' AND `PROGRAMM`='' AND
|
|
`TESTID`='' AND `UCCHECK`='';
|
|
drop table t1;
|