mirror of
https://github.com/MariaDB/server.git
synced 2025-08-30 11:22:14 +03:00
1243 lines
37 KiB
Plaintext
1243 lines
37 KiB
Plaintext
set global innodb_file_per_table=on;
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set global innodb_file_format='Barracuda';
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SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS;
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create table t1(a varchar(2) primary key) engine=innodb;
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insert into t1 values('');
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create index t1a1 on t1(a(1));
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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drop table t1;
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create table t1(a int not null, b int, c char(10) not null, d varchar(20)) engine = innodb;
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insert into t1 values (5,5,'oo','oo'),(4,4,'tr','tr'),(3,4,'ad','ad'),(2,3,'ak','ak');
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commit;
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alter table t1 add index b (b), add index b (b);
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ERROR 42000: Duplicate key name 'b'
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alter table t1 add index (b,b);
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ERROR 42S21: Duplicate column name 'b'
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alter table t1 add index d2 (d);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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KEY `d2` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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analyze table t1;
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explain select * from t1 force index(d2) order by d;
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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 NULL d2 23 NULL 4
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select * from t1 force index (d2) order by d;
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a b c d
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3 4 ad ad
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2 3 ak ak
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5 5 oo oo
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4 4 tr tr
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alter table t1 add unique index (b);
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ERROR 23000: Duplicate entry '4' for key 'b'
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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KEY `d2` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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alter table t1 add index (b);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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KEY `d2` (`d`),
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KEY `b` (`b`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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alter table t1 add unique index (c), add index (d);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 1
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Warnings:
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Note 1831 Duplicate index `d`. This is deprecated and will be disallowed in a future release.
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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UNIQUE KEY `c` (`c`),
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KEY `d2` (`d`),
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KEY `b` (`b`),
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KEY `d` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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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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explain select * from t1 force index(c) order by c;
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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 NULL c 10 NULL 4
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alter table t1 add primary key (a), drop index c;
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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KEY `d2` (`d`),
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KEY `b` (`b`),
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KEY `d` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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affected rows: 1
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alter table t1 add primary key (c);
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ERROR 42000: Multiple primary key defined
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alter table t1 drop primary key, add primary key (b);
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ERROR 23000: Duplicate entry '4' for key 'PRIMARY'
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create unique index c on t1 (c);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `c` (`c`),
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KEY `d2` (`d`),
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KEY `b` (`b`),
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KEY `d` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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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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explain select * from t1 force index(c) order by c;
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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 NULL c 10 NULL 4
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select * from t1 force index(c) order by c;
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a b c d
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3 4 ad ad
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2 3 ak ak
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5 5 oo oo
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4 4 tr tr
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alter table t1 drop index b, add index (b);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `c` (`c`),
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KEY `d2` (`d`),
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KEY `b` (`b`),
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KEY `d` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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insert into t1 values(6,1,'ggg','ggg');
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select * from t1;
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a b c d
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2 3 ak ak
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3 4 ad ad
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4 4 tr tr
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5 5 oo oo
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6 1 ggg ggg
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select * from t1 force index(b) order by b;
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a b c d
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6 1 ggg ggg
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2 3 ak ak
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3 4 ad ad
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4 4 tr tr
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5 5 oo oo
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select * from t1 force index(c) order by c;
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a b c d
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3 4 ad ad
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2 3 ak ak
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6 1 ggg ggg
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5 5 oo oo
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4 4 tr tr
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select * from t1 force index(d) order by d;
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a b c d
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3 4 ad ad
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2 3 ak ak
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6 1 ggg ggg
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5 5 oo oo
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4 4 tr tr
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analyze table t1;
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explain select * from t1 force index(b) order by b;
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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 NULL b 5 NULL 5
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explain select * from t1 force index(c) order by c;
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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 NULL c 10 NULL 5
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explain select * from t1 force index(d) order by d;
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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 NULL d 23 NULL 5
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `c` (`c`),
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KEY `d2` (`d`),
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KEY `b` (`b`),
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KEY `d` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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drop table t1;
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create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb;
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insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ad','ad'),(4,4,'afe','afe');
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commit;
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alter table t1 add index (c(2));
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) DEFAULT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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KEY `c` (`c`(2))
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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affected rows: 1
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alter table t1 add unique index (d(10));
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) DEFAULT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `d` (`d`(10)),
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KEY `c` (`c`(2))
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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affected rows: 1
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insert into t1 values(5,1,'ggg','ggg');
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analyze table t1;
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select * from t1;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 3 ad ad
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4 4 afe afe
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5 1 ggg ggg
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select * from t1 force index(c) order by c;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 3 ad ad
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4 4 afe afe
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5 1 ggg ggg
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select * from t1 force index(d) order by d;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 3 ad ad
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4 4 afe afe
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5 1 ggg ggg
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explain select * from t1 order by b;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort
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explain select * from t1 force index(c) order by c;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort
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explain select * from t1 force index(d) order by d;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) DEFAULT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `d` (`d`(10)),
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KEY `c` (`c`(2))
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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alter table t1 drop index d;
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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insert into t1 values(8,9,'fff','fff');
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select * from t1;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 3 ad ad
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4 4 afe afe
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5 1 ggg ggg
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8 9 fff fff
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select * from t1 force index(c) order by c;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 3 ad ad
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4 4 afe afe
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8 9 fff fff
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5 1 ggg ggg
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analyze table t1;
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explain select * from t1 order by b;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort
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explain select * from t1 force index(c) order by c;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort
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explain select * from t1 order by d;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) DEFAULT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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KEY `c` (`c`(2))
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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drop table t1;
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create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb;
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insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe');
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commit;
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alter table t1 add unique index (b,c);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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insert into t1 values(8,9,'fff','fff');
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select * from t1;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 2 ad ad
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4 4 afe afe
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8 9 fff fff
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select * from t1 force index(b) order by b;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 2 ad ad
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4 4 afe afe
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8 9 fff fff
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analyze table t1;
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explain select * from t1 force index(b) order by b;
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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 NULL b 16 NULL 5
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) DEFAULT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `b` (`b`,`c`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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alter table t1 add index (b,c);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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insert into t1 values(11,11,'kkk','kkk');
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select * from t1;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 2 ad ad
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4 4 afe afe
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8 9 fff fff
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11 11 kkk kkk
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select * from t1 force index(b) order by b;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 2 ad ad
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4 4 afe afe
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8 9 fff fff
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11 11 kkk kkk
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analyze table t1;
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explain select * from t1 force index(b) order by b;
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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 NULL b 16 NULL 6
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) DEFAULT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `b` (`b`,`c`),
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KEY `b_2` (`b`,`c`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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alter table t1 add unique index (c,d);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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insert into t1 values(13,13,'yyy','aaa');
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select * from t1;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 2 ad ad
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4 4 afe afe
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8 9 fff fff
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11 11 kkk kkk
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13 13 yyy aaa
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select * from t1 force index(b) order by b;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 2 ad ad
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4 4 afe afe
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8 9 fff fff
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11 11 kkk kkk
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13 13 yyy aaa
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select * from t1 force index(c) order by c;
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a b c d
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1 1 ab ab
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2 2 ac ac
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3 2 ad ad
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4 4 afe afe
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8 9 fff fff
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|
11 11 kkk kkk
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|
13 13 yyy aaa
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|
analyze table t1;
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|
explain select * from t1 force index(b) order by b;
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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 NULL b 16 NULL 7
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|
explain select * from t1 force index(c) order by c;
|
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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 NULL c 34 NULL 7
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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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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) DEFAULT NULL,
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`d` varchar(20) DEFAULT NULL,
|
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PRIMARY KEY (`a`),
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UNIQUE KEY `b` (`b`,`c`),
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UNIQUE KEY `c` (`c`,`d`),
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KEY `b_2` (`b`,`c`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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drop table t1;
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create table t1(a int not null, b int not null, c int, primary key (a), key (b)) engine = innodb;
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create table t3(a int not null, c int not null, d int, primary key (a), key (c)) engine = innodb;
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create table t4(a int not null, d int not null, e int, primary key (a), key (d)) engine = innodb;
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create table t2(a int not null, b int, c int, d int, e int,
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foreign key (b) references t1(b) on delete set null,
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foreign key (c) references t3(c), foreign key (d) references t4(d) on update set null)
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engine = innodb;
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alter table t1 drop index b;
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ERROR HY000: Cannot drop index 'b': needed in a foreign key constraint
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alter table t3 drop index c;
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ERROR HY000: Cannot drop index 'c': needed in a foreign key constraint
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alter table t4 drop index d;
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|
ERROR HY000: Cannot drop index 'd': needed in a foreign key constraint
|
|
alter table t2 drop index b;
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|
ERROR HY000: Cannot drop index 'b': needed in a foreign key constraint
|
|
alter table t2 drop index b, drop index c, drop index d;
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|
ERROR HY000: Cannot drop index 'b': needed in a foreign key constraint
|
|
alter table t2 MODIFY b INT NOT NULL, ALGORITHM=COPY;
|
|
ERROR HY000: Cannot change column 'b': used in a foreign key constraint 't2_ibfk_1'
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|
set @old_sql_mode = @@sql_mode;
|
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set @@sql_mode = 'STRICT_TRANS_TABLES';
|
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alter table t2 MODIFY b INT NOT NULL, ALGORITHM=INPLACE;
|
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ERROR HY000: Column 'b' cannot be NOT NULL: needed in a foreign key constraint 'test/t2_ibfk_1' SET NULL
|
|
set @@sql_mode = @old_sql_mode;
|
|
SET FOREIGN_KEY_CHECKS=0;
|
|
alter table t2 DROP COLUMN b, ALGORITHM=COPY;
|
|
ERROR HY000: Cannot drop column 'b': needed in a foreign key constraint 't2_ibfk_1'
|
|
alter table t2 DROP COLUMN b;
|
|
ERROR HY000: Cannot drop column 'b': needed in a foreign key constraint 'test/t2_ibfk_1'
|
|
alter table t1 DROP COLUMN b, ALGORITHM=COPY;
|
|
ERROR HY000: Cannot drop column 'b': needed in a foreign key constraint 't2_ibfk_1' of table 'test.t2'
|
|
alter table t1 DROP COLUMN b;
|
|
ERROR HY000: Cannot drop column 'b': needed in a foreign key constraint 'test/t2_ibfk_1' of table '"test"."t2"'
|
|
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
|
|
create unique index dc on t2 (d,c);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
create index dc on t1 (b,c);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
set @@sql_mode = 'STRICT_TRANS_TABLES';
|
|
alter table t2 add primary key (alpha), change a alpha int,
|
|
change b beta int not null, change c charlie int not null;
|
|
ERROR HY000: Column 'b' cannot be NOT NULL: needed in a foreign key constraint 'test/t2_ibfk_1' SET NULL
|
|
alter table t2 add primary key (alpha), change a alpha int,
|
|
change c charlie int not null, change d delta int not null;
|
|
ERROR HY000: Column 'd' cannot be NOT NULL: needed in a foreign key constraint 'test/t2_ibfk_3' SET NULL
|
|
alter table t2 add primary key (alpha), change a alpha int,
|
|
change b beta int, modify c int not null;
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
set @@sql_mode = @old_sql_mode;
|
|
insert into t1 values (1,1,1);
|
|
insert into t3 values (1,1,1);
|
|
insert into t4 values (1,1,1);
|
|
insert into t2 values (1,1,1,1,1);
|
|
commit;
|
|
alter table t4 add constraint dc foreign key (a) references t1(a);
|
|
affected rows: 1
|
|
info: Records: 1 Duplicates: 0 Warnings: 0
|
|
show create table t4;
|
|
Table Create Table
|
|
t4 CREATE TABLE `t4` (
|
|
`a` int(11) NOT NULL,
|
|
`d` int(11) NOT NULL,
|
|
`e` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
KEY `d` (`d`),
|
|
CONSTRAINT `dc` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
alter table t3 add constraint dc foreign key (a) references t1(a);
|
|
ERROR HY000: Can't create table `test`.`#sql-temporary` (errno: 121 "Duplicate key on write or update")
|
|
SET FOREIGN_KEY_CHECKS=0;
|
|
alter table t3 add constraint dc foreign key (a) references t1(a);
|
|
ERROR HY000: Failed to add the foreign key constraint 'test/dc' to system tables
|
|
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
|
|
show create table t3;
|
|
Table Create Table
|
|
t3 CREATE TABLE `t3` (
|
|
`a` int(11) NOT NULL,
|
|
`c` int(11) NOT NULL,
|
|
`d` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
KEY `c` (`c`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
alter table t2 drop index b, add index (beta);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
show create table t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`alpha` int(11) NOT NULL,
|
|
`beta` int(11) DEFAULT NULL,
|
|
`c` int(11) NOT NULL,
|
|
`d` int(11) DEFAULT NULL,
|
|
`e` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`alpha`),
|
|
UNIQUE KEY `dc` (`d`,`c`),
|
|
KEY `c` (`c`),
|
|
KEY `beta` (`beta`),
|
|
CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`beta`) REFERENCES `t1` (`b`) ON DELETE SET NULL,
|
|
CONSTRAINT `t2_ibfk_2` FOREIGN KEY (`c`) REFERENCES `t3` (`c`),
|
|
CONSTRAINT `t2_ibfk_3` FOREIGN KEY (`d`) REFERENCES `t4` (`d`) ON UPDATE SET NULL
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
delete from t1;
|
|
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `dc` FOREIGN KEY (`a`) REFERENCES `t1` (`a`))
|
|
drop index dc on t4;
|
|
ERROR 42000: Can't DROP 'dc'; check that column/key exists
|
|
alter table t3 drop foreign key dc;
|
|
ERROR 42000: Can't DROP 'dc'; check that column/key exists
|
|
alter table t4 drop foreign key dc;
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
select * from t2;
|
|
alpha beta c d e
|
|
1 1 1 1 1
|
|
delete from t1;
|
|
select * from t2;
|
|
alpha beta c d e
|
|
1 NULL 1 1 1
|
|
drop table t2,t4,t3,t1;
|
|
create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb default charset=utf8;
|
|
insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe');
|
|
commit;
|
|
alter table t1 add unique index (b);
|
|
ERROR 23000: Duplicate entry '2' for key 'b'
|
|
insert into t1 values(8,9,'fff','fff');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=utf8
|
|
alter table t1 add index (b);
|
|
insert into t1 values(10,10,'kkk','iii');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
select * from t1 force index(b) order by b;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
explain select * from t1 force index(b) order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL b 5 NULL 6
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
KEY `b` (`b`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=utf8
|
|
alter table t1 add unique index (c), add index (d);
|
|
insert into t1 values(11,11,'aaa','mmm');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
11 11 aaa mmm
|
|
select * from t1 force index(b) order by b;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
11 11 aaa mmm
|
|
select * from t1 force index(c) order by c;
|
|
a b c d
|
|
11 11 aaa mmm
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
select * from t1 force index(d) order by d;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
11 11 aaa mmm
|
|
explain select * from t1 force index(b) order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL b 5 NULL 7
|
|
explain select * from t1 force index(c) order by c;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL c 31 NULL 7
|
|
explain select * from t1 force index(d) order by d;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL d 63 NULL 7
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `c` (`c`),
|
|
KEY `b` (`b`),
|
|
KEY `d` (`d`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=utf8
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
drop table t1;
|
|
create table t1(a int not null, b int) engine = innodb;
|
|
insert into t1 values (1,1),(1,1),(1,1),(1,1);
|
|
alter table t1 add unique index (a);
|
|
ERROR 23000: Duplicate entry '1' for key 'a'
|
|
alter table t1 add unique index (b);
|
|
ERROR 23000: Duplicate entry '1' for key 'b'
|
|
alter table t1 add unique index (a), add unique index(b);
|
|
ERROR 23000: Duplicate entry '1' for key 'a'
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, c int not null,b int, primary key(a), unique key(c), key(b)) engine = innodb;
|
|
alter table t1 drop index c, drop index b;
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`c` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, b int, primary key(a)) engine = innodb;
|
|
alter table t1 add index (b);
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
KEY `b` (`b`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb;
|
|
insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ac','ac'),(4,4,'afe','afe'),(5,4,'affe','affe');
|
|
alter table t1 add unique index (b), add unique index (c), add unique index (d);
|
|
ERROR 23000: Duplicate entry '4' for key 'b'
|
|
alter table t1 add unique index (c), add unique index (b), add index (d);
|
|
ERROR 23000: Duplicate entry 'ac' for key 'c'
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, b int not null, c int, primary key (a), key(c)) engine=innodb;
|
|
insert into t1 values (5,1,5),(4,2,4),(3,3,3),(2,4,2),(1,5,1);
|
|
alter table t1 add unique index (b);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
insert into t1 values (10,20,20),(11,19,19),(12,18,18),(13,17,17);
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) NOT NULL,
|
|
`c` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `b` (`b`),
|
|
KEY `c` (`c`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
analyze table t1;
|
|
explain select * from t1 force index(c) order by c;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL c 5 NULL 9
|
|
explain select * from t1 order by a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 4 NULL 9
|
|
explain select * from t1 force index(b) order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL b 4 NULL 9
|
|
select * from t1 order by a;
|
|
a b c
|
|
1 5 1
|
|
2 4 2
|
|
3 3 3
|
|
4 2 4
|
|
5 1 5
|
|
10 20 20
|
|
11 19 19
|
|
12 18 18
|
|
13 17 17
|
|
select * from t1 force index(b) order by b;
|
|
a b c
|
|
5 1 5
|
|
4 2 4
|
|
3 3 3
|
|
2 4 2
|
|
1 5 1
|
|
13 17 17
|
|
12 18 18
|
|
11 19 19
|
|
10 20 20
|
|
select * from t1 force index(c) order by c;
|
|
a b c
|
|
1 5 1
|
|
2 4 2
|
|
3 3 3
|
|
4 2 4
|
|
5 1 5
|
|
13 17 17
|
|
12 18 18
|
|
11 19 19
|
|
10 20 20
|
|
drop table t1;
|
|
create table t1(a int not null, b int not null) engine=innodb;
|
|
insert into t1 values (1,1);
|
|
alter table t1 add primary key(b);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
insert into t1 values (2,2);
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) NOT NULL,
|
|
PRIMARY KEY (`b`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
select * from t1;
|
|
a b
|
|
1 1
|
|
2 2
|
|
analyze table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status OK
|
|
explain select * from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
|
|
explain select * from t1 order by a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using filesort
|
|
explain select * from t1 order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 4 NULL 2
|
|
checksum table t1;
|
|
Table Checksum
|
|
test.t1 582702641
|
|
drop table t1;
|
|
create table t1(a int not null) engine=innodb;
|
|
insert into t1 values (1);
|
|
alter table t1 add primary key(a);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
insert into t1 values (2);
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
PRIMARY KEY (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
commit;
|
|
select * from t1;
|
|
a
|
|
1
|
|
2
|
|
analyze table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status OK
|
|
explain select * from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index
|
|
explain select * from t1 order by a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index
|
|
drop table t1;
|
|
set global innodb_file_per_table=1;
|
|
set global innodb_file_format=Antelope;
|
|
set global innodb_file_format_max=Antelope;
|
|
SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0;
|
|
SET FOREIGN_KEY_CHECKS=0;
|
|
CREATE TABLE t1(
|
|
c1 BIGINT(12) NOT NULL,
|
|
PRIMARY KEY (c1)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
CREATE TABLE t2(
|
|
c1 BIGINT(16) NOT NULL,
|
|
c2 BIGINT(12) NOT NULL,
|
|
c3 BIGINT(12) NOT NULL,
|
|
PRIMARY KEY (c1)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3) REFERENCES t1(c1);
|
|
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
|
|
SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`),
|
|
KEY `fk_t2_ca` (`c3`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
CREATE INDEX i_t2_c3_c2 ON t2(c3, c2);
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`),
|
|
KEY `i_t2_c3_c2` (`c3`,`c2`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
|
|
SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;
|
|
INSERT INTO t2 VALUES(0,0,0);
|
|
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`))
|
|
INSERT INTO t1 VALUES(0);
|
|
INSERT INTO t2 VALUES(0,0,0);
|
|
DROP TABLE t2;
|
|
CREATE TABLE t2(
|
|
c1 BIGINT(16) NOT NULL,
|
|
c2 BIGINT(12) NOT NULL,
|
|
c3 BIGINT(12) NOT NULL,
|
|
PRIMARY KEY (c1,c2,c3)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
SET FOREIGN_KEY_CHECKS=0;
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3) REFERENCES t1(c1);
|
|
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`,`c2`,`c3`),
|
|
KEY `fk_t2_ca` (`c3`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
CREATE INDEX i_t2_c3_c2 ON t2(c3, c2);
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`,`c2`,`c3`),
|
|
KEY `i_t2_c3_c2` (`c3`,`c2`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
INSERT INTO t2 VALUES(0,0,1);
|
|
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`))
|
|
INSERT INTO t2 VALUES(0,0,0);
|
|
DELETE FROM t1;
|
|
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`))
|
|
DELETE FROM t2;
|
|
DROP TABLE t2;
|
|
DROP TABLE t1;
|
|
CREATE TABLE t1(
|
|
c1 BIGINT(12) NOT NULL,
|
|
c2 INT(4) NOT NULL,
|
|
PRIMARY KEY (c2,c1)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
CREATE TABLE t2(
|
|
c1 BIGINT(16) NOT NULL,
|
|
c2 BIGINT(12) NOT NULL,
|
|
c3 BIGINT(12) NOT NULL,
|
|
PRIMARY KEY (c1)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
SET FOREIGN_KEY_CHECKS=0;
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c1,c1), ALGORITHM=COPY;
|
|
ERROR HY000: Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c1,c1);
|
|
ERROR HY000: Failed to add the foreign key constaint. Missing index for constraint 'fk_t2_ca' in the referenced table 't1'
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2), ALGORITHM=COPY;
|
|
ERROR HY000: Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2);
|
|
ERROR HY000: Failed to add the foreign key constaint. Missing index for constraint 'fk_t2_ca' in the referenced table 't1'
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c2,c1), ALGORITHM=INPLACE;
|
|
ERROR HY000: Failed to add the foreign key constraint on table 't2'. Incorrect options in FOREIGN KEY constraint 'test/fk_t2_ca'
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c2,c1), ALGORITHM=COPY;
|
|
ERROR HY000: Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
|
|
ALTER TABLE t1 MODIFY COLUMN c2 BIGINT(12) NOT NULL;
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2), ALGORITHM=COPY;
|
|
ERROR HY000: Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2);
|
|
ERROR HY000: Failed to add the foreign key constaint. Missing index for constraint 'fk_t2_ca' in the referenced table 't1'
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c2,c1);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
|
|
affected rows: 0
|
|
SHOW CREATE TABLE t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`c1` bigint(12) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c2`,`c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
affected rows: 1
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`),
|
|
KEY `fk_t2_ca` (`c3`,`c2`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
affected rows: 1
|
|
CREATE INDEX i_t2_c2_c1 ON t2(c2, c1);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`),
|
|
KEY `fk_t2_ca` (`c3`,`c2`),
|
|
KEY `i_t2_c2_c1` (`c2`,`c1`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
affected rows: 1
|
|
CREATE INDEX i_t2_c3_c1_c2 ON t2(c3, c1, c2);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`),
|
|
KEY `fk_t2_ca` (`c3`,`c2`),
|
|
KEY `i_t2_c2_c1` (`c2`,`c1`),
|
|
KEY `i_t2_c3_c1_c2` (`c3`,`c1`,`c2`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
affected rows: 1
|
|
CREATE INDEX i_t2_c3_c2 ON t2(c3, c2);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`),
|
|
KEY `i_t2_c2_c1` (`c2`,`c1`),
|
|
KEY `i_t2_c3_c1_c2` (`c3`,`c1`,`c2`),
|
|
KEY `i_t2_c3_c2` (`c3`,`c2`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
affected rows: 1
|
|
DROP TABLE t2;
|
|
DROP TABLE t1;
|
|
CREATE TABLE t1 (a INT, b CHAR(1)) ENGINE=InnoDB;
|
|
INSERT INTO t1 VALUES (3,'a'),(3,'b'),(1,'c'),(0,'d'),(1,'e');
|
|
CREATE TABLE t2 (a INT, b CHAR(1)) ENGINE=InnoDB;
|
|
CREATE TABLE t2i (a INT, b CHAR(1) NOT NULL) ENGINE=InnoDB;
|
|
CREATE TABLE t2c (a INT, b CHAR(1) NOT NULL) ENGINE=InnoDB;
|
|
INSERT INTO t2 SELECT * FROM t1;
|
|
INSERT INTO t2i SELECT * FROM t1;
|
|
INSERT INTO t2c SELECT * FROM t1;
|
|
BEGIN;
|
|
SELECT * FROM t1;
|
|
a b
|
|
3 a
|
|
3 b
|
|
1 c
|
|
0 d
|
|
1 e
|
|
SET lock_wait_timeout=1;
|
|
CREATE INDEX t1a ON t1(a);
|
|
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
|
|
CREATE INDEX t2a ON t2(a);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
set @old_sql_mode = @@sql_mode;
|
|
set @@sql_mode = 'STRICT_TRANS_TABLES';
|
|
ALTER TABLE t2i ADD PRIMARY KEY(a,b), ADD INDEX t2a(a), ALGORITHM=INPLACE;
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
set @@sql_mode = @old_sql_mode;
|
|
ALTER TABLE t2c ADD PRIMARY KEY(a,b), ADD INDEX t2a(a), ALGORITHM=COPY;
|
|
affected rows: 5
|
|
info: Records: 5 Duplicates: 0 Warnings: 0
|
|
SELECT * FROM t2i;
|
|
ERROR HY000: Table definition has changed, please retry transaction
|
|
SELECT * FROM t2i FORCE INDEX(t2a) ORDER BY a;
|
|
ERROR HY000: Table definition has changed, please retry transaction
|
|
SELECT * FROM t2c;
|
|
ERROR HY000: Table definition has changed, please retry transaction
|
|
SELECT * FROM t2c FORCE INDEX(t2a) ORDER BY a;
|
|
ERROR HY000: Table definition has changed, please retry transaction
|
|
SELECT * FROM t2;
|
|
a b
|
|
3 a
|
|
3 b
|
|
1 c
|
|
0 d
|
|
1 e
|
|
SELECT * FROM t2 FORCE INDEX(t2a) ORDER BY a;
|
|
ERROR HY000: Table definition has changed, please retry transaction
|
|
SELECT * FROM t2;
|
|
a b
|
|
3 a
|
|
3 b
|
|
1 c
|
|
0 d
|
|
1 e
|
|
COMMIT;
|
|
SELECT * FROM t2;
|
|
a b
|
|
3 a
|
|
3 b
|
|
1 c
|
|
0 d
|
|
1 e
|
|
SELECT * FROM t2 FORCE INDEX(t2a) ORDER BY a;
|
|
a b
|
|
0 d
|
|
1 c
|
|
1 e
|
|
3 a
|
|
3 b
|
|
SELECT * FROM t2i;
|
|
a b
|
|
0 d
|
|
1 c
|
|
1 e
|
|
3 a
|
|
3 b
|
|
SELECT * FROM t2i FORCE INDEX(t2a) ORDER BY a;
|
|
a b
|
|
0 d
|
|
1 c
|
|
1 e
|
|
3 a
|
|
3 b
|
|
SELECT * FROM t2c;
|
|
a b
|
|
0 d
|
|
1 c
|
|
1 e
|
|
3 a
|
|
3 b
|
|
SELECT * FROM t2c FORCE INDEX(t2a) ORDER BY a;
|
|
a b
|
|
0 d
|
|
1 c
|
|
1 e
|
|
3 a
|
|
3 b
|
|
alter table t2 add index t2a(b);
|
|
ERROR 42000: Duplicate key name 't2a'
|
|
alter table t2 drop index t2a, add index t2a(b);
|
|
show create table t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`a` int(11) DEFAULT NULL,
|
|
`b` char(1) DEFAULT NULL,
|
|
KEY `t2a` (`b`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
show create table t2i;
|
|
Table Create Table
|
|
t2i CREATE TABLE `t2i` (
|
|
`a` int(11) NOT NULL,
|
|
`b` char(1) NOT NULL,
|
|
PRIMARY KEY (`a`,`b`),
|
|
KEY `t2a` (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
show create table t2c;
|
|
Table Create Table
|
|
t2c CREATE TABLE `t2c` (
|
|
`a` int(11) NOT NULL,
|
|
`b` char(1) NOT NULL,
|
|
PRIMARY KEY (`a`,`b`),
|
|
KEY `t2a` (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
DROP TABLE t1,t2,t2c,t2i;
|
|
SET @save_format = @@GLOBAL.innodb_file_format;
|
|
SET @save_prefix = @@GLOBAL.innodb_large_prefix;
|
|
SET GLOBAL innodb_file_format=barracuda;
|
|
SET GLOBAL innodb_large_prefix=ON;
|
|
CREATE TABLE t1 (c VARCHAR(1024),
|
|
c1 CHAR(255) NOT NULL,c2 CHAR(255) NOT NULL,c3 CHAR(255) NOT NULL,
|
|
c4 CHAR(255) NOT NULL,c5 CHAR(255) NOT NULL,c6 CHAR(255) NOT NULL,
|
|
c7 CHAR(255) NOT NULL,c8 CHAR(255) NOT NULL,c9 CHAR(255) NOT NULL,
|
|
ca CHAR(255) NOT NULL,cb CHAR(255) NOT NULL,cc CHAR(255) NOT NULL,
|
|
cd CHAR(255) NOT NULL,ce CHAR(255) NOT NULL,cf CHAR(255) NOT NULL,
|
|
d0 CHAR(255) NOT NULL,d1 CHAR(255) NOT NULL,d2 CHAR(255) NOT NULL,
|
|
d3 CHAR(255) NOT NULL,d4 CHAR(255) NOT NULL,d5 CHAR(255) NOT NULL,
|
|
d6 CHAR(255) NOT NULL,d7 CHAR(255) NOT NULL,d8 CHAR(255) NOT NULL,
|
|
d9 CHAR(255) NOT NULL,da CHAR(255) NOT NULL,db CHAR(255) NOT NULL,
|
|
dc CHAR(255) NOT NULL,dd CHAR(255) NOT NULL,de CHAR(255) NOT NULL,
|
|
UNIQUE KEY(c))
|
|
ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
|
|
INSERT INTO t1 VALUES
|
|
(repeat('a',999),'','','','','','','','','','','','','','','','','','','','','','','','','','','','','',''),
|
|
(CONCAT(repeat('a',999),'b'),'','','','','','','','','','','','','','','','','','','','','','','','','','','','','','');
|
|
ALTER TABLE t1 ROW_FORMAT=REDUNDANT, algorithm=inplace;
|
|
ERROR HY000: Index column size too large. The maximum column size is 767 bytes.
|
|
ALTER TABLE t1 ROW_FORMAT=REDUNDANT, algorithm=copy;
|
|
ERROR HY000: Index column size too large. The maximum column size is 767 bytes.
|
|
SELECT COUNT(*) FROM t1;
|
|
COUNT(*)
|
|
2
|
|
CHECK TABLE t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
DROP TABLE t1;
|
|
SET GLOBAL innodb_file_format=@save_format;
|
|
SET GLOBAL innodb_large_prefix=@save_prefix;
|
|
#
|
|
# Bug#19811005 ALTER TABLE ADD INDEX DOES NOT UPDATE INDEX_LENGTH
|
|
# IN I_S TABLES
|
|
#
|
|
CREATE TABLE t1(a INT, b INT) ENGINE=INNODB, STATS_PERSISTENT=1;
|
|
SELECT cast(DATA_LENGTH/@@innodb_page_size as int) D,
|
|
cast(INDEX_LENGTH/@@innodb_page_size as int) I
|
|
FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test';
|
|
D I
|
|
1 0
|
|
ALTER TABLE t1 ADD INDEX (a);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
SELECT cast(DATA_LENGTH/@@innodb_page_size as int) D,
|
|
cast(INDEX_LENGTH/@@innodb_page_size as int) I
|
|
FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test';
|
|
D I
|
|
1 1
|
|
ALTER TABLE t1 ADD INDEX (b);
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
SELECT cast(DATA_LENGTH/@@innodb_page_size as int) D,
|
|
cast(INDEX_LENGTH/@@innodb_page_size as int) I
|
|
FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test';
|
|
D I
|
|
1 2
|
|
DROP TABLE t1;
|