1378 lines
46 KiB
Plaintext
1378 lines
46 KiB
Plaintext
drop table if exists t1,t2;
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drop database if exists mysqltest;
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create table t1 (
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col1 int not null auto_increment primary key,
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col2 varchar(30) not null,
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col3 varchar (20) not null,
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col4 varchar(4) not null,
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col5 enum('PENDING', 'ACTIVE', 'DISABLED') not null,
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col6 int not null, to_be_deleted int);
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insert into t1 values (2,4,3,5,"PENDING",1,7);
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alter table t1
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add column col4_5 varchar(20) not null after col4,
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add column col7 varchar(30) not null after col5,
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add column col8 datetime not null, drop column to_be_deleted,
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change column col2 fourth varchar(30) not null after col3,
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modify column col6 int not null first;
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select * from t1;
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col6 col1 col3 fourth col4 col4_5 col5 col7 col8
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1 2 3 4 5 PENDING 0000-00-00 00:00:00
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drop table t1;
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create table t1 (bandID MEDIUMINT UNSIGNED NOT NULL PRIMARY KEY, payoutID SMALLINT UNSIGNED NOT NULL);
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insert into t1 (bandID,payoutID) VALUES (1,6),(2,6),(3,4),(4,9),(5,10),(6,1),(7,12),(8,12);
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alter table t1 add column new_col int, order by payoutid,bandid;
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select * from t1;
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bandID payoutID new_col
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6 1 NULL
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3 4 NULL
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1 6 NULL
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2 6 NULL
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4 9 NULL
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5 10 NULL
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7 12 NULL
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8 12 NULL
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alter table t1 order by bandid,payoutid;
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select * from t1;
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bandID payoutID new_col
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1 6 NULL
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2 6 NULL
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3 4 NULL
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4 9 NULL
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5 10 NULL
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6 1 NULL
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7 12 NULL
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8 12 NULL
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drop table t1;
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CREATE TABLE t1 (
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GROUP_ID int(10) unsigned DEFAULT '0' NOT NULL,
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LANG_ID smallint(5) unsigned DEFAULT '0' NOT NULL,
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NAME varchar(80) DEFAULT '' NOT NULL,
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PRIMARY KEY (GROUP_ID,LANG_ID),
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KEY NAME (NAME));
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ALTER TABLE t1 CHANGE NAME NAME CHAR(80) not null;
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SHOW FULL COLUMNS FROM t1;
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Field Type Collation Null Key Default Extra Privileges Comment
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GROUP_ID int(10) unsigned NULL NO PRI 0 #
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LANG_ID smallint(5) unsigned NULL NO PRI 0 #
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NAME char(80) latin1_swedish_ci NO MUL NULL #
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DROP TABLE t1;
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create table t1 (n int);
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insert into t1 values(9),(3),(12),(10);
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alter table t1 order by n;
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select * from t1;
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n
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3
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9
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10
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12
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drop table t1;
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CREATE TABLE t1 (
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id int(11) unsigned NOT NULL default '0',
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category_id tinyint(4) unsigned NOT NULL default '0',
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type_id tinyint(4) unsigned NOT NULL default '0',
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body text NOT NULL,
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user_id int(11) unsigned NOT NULL default '0',
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status enum('new','old') NOT NULL default 'new',
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PRIMARY KEY (id)
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) ENGINE=MyISAM;
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ALTER TABLE t1 ORDER BY t1.id, t1.status, t1.type_id, t1.user_id, t1.body;
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DROP TABLE t1;
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CREATE TABLE t1 (AnamneseId int(10) unsigned NOT NULL auto_increment,B BLOB,PRIMARY KEY (AnamneseId)) engine=myisam;
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insert into t1 values (null,"hello");
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LOCK TABLES t1 WRITE;
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ALTER TABLE t1 ADD Column new_col int not null;
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UNLOCK TABLES;
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OPTIMIZE TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 optimize status OK
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DROP TABLE t1;
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create table t1 (i int unsigned not null auto_increment primary key);
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insert into t1 values (null),(null),(null),(null);
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alter table t1 drop i,add i int unsigned not null auto_increment, drop primary key, add primary key (i);
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select * from t1;
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i
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1
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2
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3
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4
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drop table t1;
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create table t1 (name char(15));
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insert into t1 (name) values ("current");
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create database mysqltest;
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create table mysqltest.t1 (name char(15));
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insert into mysqltest.t1 (name) values ("mysqltest");
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select * from t1;
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name
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current
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select * from mysqltest.t1;
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name
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mysqltest
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alter table t1 rename mysqltest.t1;
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ERROR 42S01: Table 't1' already exists
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select * from t1;
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name
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current
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select * from mysqltest.t1;
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name
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mysqltest
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drop table t1;
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drop database mysqltest;
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create table t1 (n1 int not null, n2 int, n3 int, n4 float,
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unique(n1),
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key (n1, n2, n3, n4),
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key (n2, n3, n4, n1),
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key (n3, n4, n1, n2),
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key (n4, n1, n2, n3) );
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alter table t1 disable keys;
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show keys from t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 n1 1 n1 A 0 NULL NULL BTREE
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t1 1 n1_2 1 n1 A NULL NULL NULL BTREE disabled
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t1 1 n1_2 2 n2 A NULL NULL NULL YES BTREE disabled
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t1 1 n1_2 3 n3 A NULL NULL NULL YES BTREE disabled
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t1 1 n1_2 4 n4 A NULL NULL NULL YES BTREE disabled
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t1 1 n2 1 n2 A NULL NULL NULL YES BTREE disabled
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t1 1 n2 2 n3 A NULL NULL NULL YES BTREE disabled
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t1 1 n2 3 n4 A NULL NULL NULL YES BTREE disabled
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t1 1 n2 4 n1 A NULL NULL NULL BTREE disabled
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t1 1 n3 1 n3 A NULL NULL NULL YES BTREE disabled
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t1 1 n3 2 n4 A NULL NULL NULL YES BTREE disabled
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t1 1 n3 3 n1 A NULL NULL NULL BTREE disabled
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t1 1 n3 4 n2 A NULL NULL NULL YES BTREE disabled
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t1 1 n4 1 n4 A NULL NULL NULL YES BTREE disabled
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t1 1 n4 2 n1 A NULL NULL NULL BTREE disabled
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t1 1 n4 3 n2 A NULL NULL NULL YES BTREE disabled
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t1 1 n4 4 n3 A NULL NULL NULL YES BTREE disabled
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insert into t1 values(10,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(9,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(8,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(7,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(6,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(5,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(4,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(3,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(2,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(1,RAND()*1000,RAND()*1000,RAND());
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alter table t1 enable keys;
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show keys from t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 n1 1 n1 A 10 NULL NULL BTREE
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t1 1 n1_2 1 n1 A 10 NULL NULL BTREE
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t1 1 n1_2 2 n2 A 10 NULL NULL YES BTREE
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t1 1 n1_2 3 n3 A 10 NULL NULL YES BTREE
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t1 1 n1_2 4 n4 A 10 NULL NULL YES BTREE
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t1 1 n2 1 n2 A 10 NULL NULL YES BTREE
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t1 1 n2 2 n3 A 10 NULL NULL YES BTREE
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t1 1 n2 3 n4 A 10 NULL NULL YES BTREE
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t1 1 n2 4 n1 A 10 NULL NULL BTREE
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t1 1 n3 1 n3 A 10 NULL NULL YES BTREE
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t1 1 n3 2 n4 A 10 NULL NULL YES BTREE
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t1 1 n3 3 n1 A 10 NULL NULL BTREE
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t1 1 n3 4 n2 A 10 NULL NULL YES BTREE
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t1 1 n4 1 n4 A 10 NULL NULL YES BTREE
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t1 1 n4 2 n1 A 10 NULL NULL BTREE
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t1 1 n4 3 n2 A 10 NULL NULL YES BTREE
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t1 1 n4 4 n3 A 10 NULL NULL YES BTREE
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drop table t1;
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create table t1 (i int unsigned not null auto_increment primary key);
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alter table t1 rename t2;
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alter table t2 rename t1, add c char(10) comment "no comment";
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show columns from t1;
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Field Type Null Key Default Extra
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i int(10) unsigned NO PRI NULL auto_increment
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c char(10) YES NULL
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drop table t1;
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create table t1 (a int, b int);
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insert into t1 values(1,100), (2,100), (3, 100);
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insert into t1 values(1,99), (2,99), (3, 99);
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insert into t1 values(1,98), (2,98), (3, 98);
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insert into t1 values(1,97), (2,97), (3, 97);
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insert into t1 values(1,96), (2,96), (3, 96);
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insert into t1 values(1,95), (2,95), (3, 95);
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insert into t1 values(1,94), (2,94), (3, 94);
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insert into t1 values(1,93), (2,93), (3, 93);
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insert into t1 values(1,92), (2,92), (3, 92);
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insert into t1 values(1,91), (2,91), (3, 91);
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insert into t1 values(1,90), (2,90), (3, 90);
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insert into t1 values(1,89), (2,89), (3, 89);
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insert into t1 values(1,88), (2,88), (3, 88);
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insert into t1 values(1,87), (2,87), (3, 87);
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insert into t1 values(1,86), (2,86), (3, 86);
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insert into t1 values(1,85), (2,85), (3, 85);
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insert into t1 values(1,84), (2,84), (3, 84);
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insert into t1 values(1,83), (2,83), (3, 83);
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insert into t1 values(1,82), (2,82), (3, 82);
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insert into t1 values(1,81), (2,81), (3, 81);
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insert into t1 values(1,80), (2,80), (3, 80);
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insert into t1 values(1,79), (2,79), (3, 79);
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insert into t1 values(1,78), (2,78), (3, 78);
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insert into t1 values(1,77), (2,77), (3, 77);
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insert into t1 values(1,76), (2,76), (3, 76);
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insert into t1 values(1,75), (2,75), (3, 75);
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insert into t1 values(1,74), (2,74), (3, 74);
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insert into t1 values(1,73), (2,73), (3, 73);
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insert into t1 values(1,72), (2,72), (3, 72);
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insert into t1 values(1,71), (2,71), (3, 71);
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insert into t1 values(1,70), (2,70), (3, 70);
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insert into t1 values(1,69), (2,69), (3, 69);
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insert into t1 values(1,68), (2,68), (3, 68);
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insert into t1 values(1,67), (2,67), (3, 67);
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insert into t1 values(1,66), (2,66), (3, 66);
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insert into t1 values(1,65), (2,65), (3, 65);
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insert into t1 values(1,64), (2,64), (3, 64);
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insert into t1 values(1,63), (2,63), (3, 63);
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insert into t1 values(1,62), (2,62), (3, 62);
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insert into t1 values(1,61), (2,61), (3, 61);
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insert into t1 values(1,60), (2,60), (3, 60);
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insert into t1 values(1,59), (2,59), (3, 59);
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insert into t1 values(1,58), (2,58), (3, 58);
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insert into t1 values(1,57), (2,57), (3, 57);
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insert into t1 values(1,56), (2,56), (3, 56);
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insert into t1 values(1,55), (2,55), (3, 55);
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insert into t1 values(1,54), (2,54), (3, 54);
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insert into t1 values(1,53), (2,53), (3, 53);
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insert into t1 values(1,52), (2,52), (3, 52);
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insert into t1 values(1,51), (2,51), (3, 51);
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insert into t1 values(1,50), (2,50), (3, 50);
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insert into t1 values(1,49), (2,49), (3, 49);
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insert into t1 values(1,48), (2,48), (3, 48);
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insert into t1 values(1,47), (2,47), (3, 47);
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insert into t1 values(1,46), (2,46), (3, 46);
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insert into t1 values(1,45), (2,45), (3, 45);
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insert into t1 values(1,44), (2,44), (3, 44);
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insert into t1 values(1,43), (2,43), (3, 43);
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insert into t1 values(1,42), (2,42), (3, 42);
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insert into t1 values(1,41), (2,41), (3, 41);
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insert into t1 values(1,40), (2,40), (3, 40);
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insert into t1 values(1,39), (2,39), (3, 39);
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insert into t1 values(1,38), (2,38), (3, 38);
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insert into t1 values(1,37), (2,37), (3, 37);
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insert into t1 values(1,36), (2,36), (3, 36);
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insert into t1 values(1,35), (2,35), (3, 35);
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insert into t1 values(1,34), (2,34), (3, 34);
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insert into t1 values(1,33), (2,33), (3, 33);
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insert into t1 values(1,32), (2,32), (3, 32);
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insert into t1 values(1,31), (2,31), (3, 31);
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insert into t1 values(1,30), (2,30), (3, 30);
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insert into t1 values(1,29), (2,29), (3, 29);
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insert into t1 values(1,28), (2,28), (3, 28);
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insert into t1 values(1,27), (2,27), (3, 27);
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insert into t1 values(1,26), (2,26), (3, 26);
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insert into t1 values(1,25), (2,25), (3, 25);
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insert into t1 values(1,24), (2,24), (3, 24);
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insert into t1 values(1,23), (2,23), (3, 23);
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insert into t1 values(1,22), (2,22), (3, 22);
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insert into t1 values(1,21), (2,21), (3, 21);
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insert into t1 values(1,20), (2,20), (3, 20);
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insert into t1 values(1,19), (2,19), (3, 19);
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insert into t1 values(1,18), (2,18), (3, 18);
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insert into t1 values(1,17), (2,17), (3, 17);
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insert into t1 values(1,16), (2,16), (3, 16);
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insert into t1 values(1,15), (2,15), (3, 15);
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insert into t1 values(1,14), (2,14), (3, 14);
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insert into t1 values(1,13), (2,13), (3, 13);
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insert into t1 values(1,12), (2,12), (3, 12);
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insert into t1 values(1,11), (2,11), (3, 11);
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insert into t1 values(1,10), (2,10), (3, 10);
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insert into t1 values(1,9), (2,9), (3, 9);
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insert into t1 values(1,8), (2,8), (3, 8);
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insert into t1 values(1,7), (2,7), (3, 7);
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insert into t1 values(1,6), (2,6), (3, 6);
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insert into t1 values(1,5), (2,5), (3, 5);
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insert into t1 values(1,4), (2,4), (3, 4);
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insert into t1 values(1,3), (2,3), (3, 3);
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insert into t1 values(1,2), (2,2), (3, 2);
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insert into t1 values(1,1), (2,1), (3, 1);
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alter table t1 add unique (a,b), add key (b);
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show keys from t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 a 1 a A NULL NULL NULL YES BTREE
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t1 0 a 2 b A NULL NULL NULL YES BTREE
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t1 1 b 1 b A 100 NULL NULL YES BTREE
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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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show keys from t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 a 1 a A 3 NULL NULL YES BTREE
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t1 0 a 2 b A 300 NULL NULL YES BTREE
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t1 1 b 1 b A 100 NULL NULL YES BTREE
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drop table t1;
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CREATE TABLE t1 (i int(10), index(i) );
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ALTER TABLE t1 DISABLE KEYS;
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INSERT DELAYED INTO t1 VALUES(1),(2),(3);
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ALTER TABLE t1 ENABLE KEYS;
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drop table t1;
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CREATE TABLE t1 (
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Host varchar(16) binary NOT NULL default '',
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User varchar(16) binary NOT NULL default '',
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PRIMARY KEY (Host,User)
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) ENGINE=MyISAM;
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ALTER TABLE t1 DISABLE KEYS;
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LOCK TABLES t1 WRITE;
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INSERT INTO t1 VALUES ('localhost','root'),('localhost',''),('games','monty');
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SHOW INDEX FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
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t1 0 PRIMARY 2 User A 0 NULL NULL BTREE
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ALTER TABLE t1 ENABLE KEYS;
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UNLOCK TABLES;
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CHECK TABLES t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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DROP TABLE t1;
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CREATE TABLE t1 (
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Host varchar(16) binary NOT NULL default '',
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User varchar(16) binary NOT NULL default '',
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PRIMARY KEY (Host,User),
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KEY (Host)
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) ENGINE=MyISAM;
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ALTER TABLE t1 DISABLE KEYS;
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SHOW INDEX FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
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t1 0 PRIMARY 2 User A 0 NULL NULL BTREE
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t1 1 Host 1 Host A NULL NULL NULL BTREE disabled
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LOCK TABLES t1 WRITE;
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INSERT INTO t1 VALUES ('localhost','root'),('localhost','');
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SHOW INDEX FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
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t1 0 PRIMARY 2 User A 0 NULL NULL BTREE
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t1 1 Host 1 Host A NULL NULL NULL BTREE disabled
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ALTER TABLE t1 ENABLE KEYS;
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SHOW INDEX FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
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t1 0 PRIMARY 2 User A 2 NULL NULL BTREE
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t1 1 Host 1 Host A 1 NULL NULL BTREE
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UNLOCK TABLES;
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CHECK TABLES t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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LOCK TABLES t1 WRITE;
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ALTER TABLE t1 RENAME t2;
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UNLOCK TABLES;
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select * from t2;
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Host User
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localhost
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localhost root
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DROP TABLE t2;
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CREATE TABLE t1 (
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Host varchar(16) binary NOT NULL default '',
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User varchar(16) binary NOT NULL default '',
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PRIMARY KEY (Host,User),
|
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KEY (Host)
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) ENGINE=MyISAM;
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LOCK TABLES t1 WRITE;
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ALTER TABLE t1 DISABLE KEYS;
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SHOW INDEX FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
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t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
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t1 0 PRIMARY 2 User A 0 NULL NULL BTREE
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t1 1 Host 1 Host A NULL NULL NULL BTREE disabled
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DROP TABLE t1;
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create table t1 (a int);
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alter table t1 rename to ``;
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ERROR 42000: Incorrect table name ''
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rename table t1 to ``;
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ERROR 42000: Incorrect table name ''
|
||
drop table t1;
|
||
drop table if exists t1, t2;
|
||
Warnings:
|
||
Note 1051 Unknown table 't1'
|
||
Note 1051 Unknown table 't2'
|
||
create table t1 ( a varchar(10) not null primary key ) engine=myisam;
|
||
create table t2 ( a varchar(10) not null primary key ) engine=merge union=(t1);
|
||
flush tables;
|
||
alter table t1 modify a varchar(10);
|
||
show create table t2;
|
||
Table Create Table
|
||
t2 CREATE TABLE `t2` (
|
||
`a` varchar(10) NOT NULL,
|
||
PRIMARY KEY (`a`)
|
||
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 UNION=(`t1`)
|
||
flush tables;
|
||
alter table t1 modify a varchar(10) not null;
|
||
show create table t2;
|
||
Table Create Table
|
||
t2 CREATE TABLE `t2` (
|
||
`a` varchar(10) NOT NULL,
|
||
PRIMARY KEY (`a`)
|
||
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 UNION=(`t1`)
|
||
drop table if exists t1, t2;
|
||
create table t1 (a int, b int, c int, d int, e int, f int, g int, h int,i int, primary key (a,b,c,d,e,f,g,i,h)) engine=MyISAM;
|
||
insert into t1 (a) values(1);
|
||
show table status like 't1';
|
||
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
|
||
t1 MyISAM 10 Fixed 1 37 X X X X X X X X latin1_swedish_ci NULL
|
||
alter table t1 modify a int;
|
||
show table status like 't1';
|
||
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
|
||
t1 MyISAM 10 Fixed 1 37 X X X X X X X X latin1_swedish_ci NULL
|
||
drop table t1;
|
||
create table t1 (a int not null, b int not null, c int not null, d int not null, e int not null, f int not null, g int not null, h int not null,i int not null, primary key (a,b,c,d,e,f,g,i,h)) engine=MyISAM;
|
||
insert into t1 (a) values(1);
|
||
Warnings:
|
||
Warning 1364 Field 'b' doesn't have a default value
|
||
Warning 1364 Field 'c' doesn't have a default value
|
||
Warning 1364 Field 'd' doesn't have a default value
|
||
Warning 1364 Field 'e' doesn't have a default value
|
||
Warning 1364 Field 'f' doesn't have a default value
|
||
Warning 1364 Field 'g' doesn't have a default value
|
||
Warning 1364 Field 'h' doesn't have a default value
|
||
Warning 1364 Field 'i' doesn't have a default value
|
||
show table status like 't1';
|
||
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
|
||
t1 MyISAM 10 Fixed 1 37 X X X X X X X X latin1_swedish_ci NULL
|
||
drop table t1;
|
||
set names koi8r;
|
||
create table t1 (a char(10) character set koi8r);
|
||
insert into t1 values ('<27><><EFBFBD><EFBFBD>');
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
|
||
alter table t1 change a a char(10) character set cp1251;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a binary(4);
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a char(10) character set cp1251;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a char(10) character set koi8r;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
|
||
alter table t1 change a a varchar(10) character set cp1251;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a char(10) character set koi8r;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
|
||
alter table t1 change a a text character set cp1251;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a char(10) character set koi8r;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
|
||
delete from t1;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` char(10) CHARACTER SET koi8r DEFAULT NULL
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
alter table t1 DEFAULT CHARACTER SET latin1;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` char(10) CHARACTER SET koi8r DEFAULT NULL
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
alter table t1 CONVERT TO CHARACTER SET latin1;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` char(10) DEFAULT NULL
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
alter table t1 DEFAULT CHARACTER SET cp1251;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` char(10) CHARACTER SET latin1 DEFAULT NULL
|
||
) ENGINE=MyISAM DEFAULT CHARSET=cp1251
|
||
drop table t1;
|
||
create table t1 (myblob longblob,mytext longtext)
|
||
default charset latin1 collate latin1_general_cs;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`myblob` longblob,
|
||
`mytext` longtext COLLATE latin1_general_cs
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_cs
|
||
alter table t1 character set latin2;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`myblob` longblob,
|
||
`mytext` longtext CHARACTER SET latin1 COLLATE latin1_general_cs
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin2
|
||
drop table t1;
|
||
CREATE TABLE t1 (a int PRIMARY KEY, b INT UNIQUE);
|
||
ALTER TABLE t1 DROP PRIMARY KEY;
|
||
SHOW CREATE TABLE t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` int(11) NOT NULL,
|
||
`b` int(11) DEFAULT NULL,
|
||
UNIQUE KEY `b` (`b`)
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
ALTER TABLE t1 DROP PRIMARY KEY;
|
||
ERROR 42000: Can't DROP 'PRIMARY'; check that column/key exists
|
||
DROP TABLE t1;
|
||
create table t1 (a int, b int, key(a));
|
||
insert into t1 values (1,1), (2,2);
|
||
alter table t1 drop key no_such_key;
|
||
ERROR 42000: Can't DROP 'no_such_key'; check that column/key exists
|
||
alter table t1 drop key a;
|
||
drop table t1;
|
||
CREATE TABLE T12207(a int) ENGINE=MYISAM;
|
||
ALTER TABLE T12207 DISCARD TABLESPACE;
|
||
ERROR HY000: Table storage engine for 'T12207' doesn't have this option
|
||
DROP TABLE T12207;
|
||
create table t1 (a text) character set koi8r;
|
||
insert into t1 values (_koi8r'<27><><EFBFBD><EFBFBD>');
|
||
select hex(a) from t1;
|
||
hex(a)
|
||
D4C5D3D4
|
||
alter table t1 convert to character set cp1251;
|
||
select hex(a) from t1;
|
||
hex(a)
|
||
F2E5F1F2
|
||
drop table t1;
|
||
create table t1 ( a timestamp );
|
||
alter table t1 add unique ( a(1) );
|
||
ERROR HY000: Incorrect prefix key; the used key part isn't a string, the used length is longer than the key part, or the storage engine doesn't support unique prefix keys
|
||
drop table t1;
|
||
drop table if exists t1;
|
||
create table t1 (a int, key(a));
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 a 1 a A NULL NULL NULL YES BTREE
|
||
"this used not to disable the index"
|
||
alter table t1 modify a int, disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 a 1 a A NULL NULL NULL YES BTREE disabled
|
||
alter table t1 enable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 a 1 a A NULL NULL NULL YES BTREE
|
||
alter table t1 modify a bigint, disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 a 1 a A NULL NULL NULL YES BTREE disabled
|
||
alter table t1 enable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 a 1 a A NULL NULL NULL YES BTREE
|
||
alter table t1 add b char(10), disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 a 1 a A NULL NULL NULL YES BTREE disabled
|
||
alter table t1 add c decimal(10,2), enable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 a 1 a A NULL NULL NULL YES BTREE
|
||
"this however did"
|
||
alter table t1 disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 a 1 a A NULL NULL NULL YES BTREE disabled
|
||
desc t1;
|
||
Field Type Null Key Default Extra
|
||
a bigint(20) YES MUL NULL
|
||
b char(10) YES NULL
|
||
c decimal(10,2) YES NULL
|
||
alter table t1 add d decimal(15,5);
|
||
"The key should still be disabled"
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 a 1 a A NULL NULL NULL YES BTREE disabled
|
||
drop table t1;
|
||
"Now will test with one unique index"
|
||
create table t1(a int, b char(10), unique(a));
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
alter table t1 disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
alter table t1 enable keys;
|
||
"If no copy on noop change, this won't touch the data file"
|
||
"Unique index, no change"
|
||
alter table t1 modify a int, disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
"Change the type implying data copy"
|
||
"Unique index, no change"
|
||
alter table t1 modify a bigint, disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
alter table t1 modify a bigint;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
alter table t1 modify a int;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
drop table t1;
|
||
"Now will test with one unique and one non-unique index"
|
||
create table t1(a int, b char(10), unique(a), key(b));
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
t1 1 b 1 b A NULL NULL NULL YES BTREE
|
||
alter table t1 disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
t1 1 b 1 b A NULL NULL NULL YES BTREE disabled
|
||
alter table t1 enable keys;
|
||
"If no copy on noop change, this won't touch the data file"
|
||
"The non-unique index will be disabled"
|
||
alter table t1 modify a int, disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
t1 1 b 1 b A NULL NULL NULL YES BTREE disabled
|
||
alter table t1 enable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
t1 1 b 1 b A NULL NULL NULL YES BTREE
|
||
"Change the type implying data copy"
|
||
"The non-unique index will be disabled"
|
||
alter table t1 modify a bigint, disable keys;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
t1 1 b 1 b A NULL NULL NULL YES BTREE disabled
|
||
"Change again the type, but leave the indexes as_is"
|
||
alter table t1 modify a int;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
t1 1 b 1 b A NULL NULL NULL YES BTREE disabled
|
||
"Try the same. When data is no copied on similar tables, this is noop"
|
||
alter table t1 modify a int;
|
||
show indexes from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
t1 1 b 1 b A NULL NULL NULL YES BTREE disabled
|
||
drop table t1;
|
||
create database mysqltest;
|
||
create table t1 (c1 int);
|
||
alter table t1 rename mysqltest.t1;
|
||
drop table t1;
|
||
ERROR 42S02: Unknown table 't1'
|
||
alter table mysqltest.t1 rename t1;
|
||
drop table t1;
|
||
create table t1 (c1 int);
|
||
use mysqltest;
|
||
drop database mysqltest;
|
||
alter table test.t1 rename t1;
|
||
ERROR 3D000: No database selected
|
||
alter table test.t1 rename test.t1;
|
||
use test;
|
||
drop table t1;
|
||
CREATE TABLE t1(a INT) ROW_FORMAT=FIXED;
|
||
CREATE INDEX i1 ON t1(a);
|
||
SHOW CREATE TABLE t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` int(11) DEFAULT NULL,
|
||
KEY `i1` (`a`)
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1 ROW_FORMAT=FIXED
|
||
DROP INDEX i1 ON t1;
|
||
SHOW CREATE TABLE t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` int(11) DEFAULT NULL
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1 ROW_FORMAT=FIXED
|
||
DROP TABLE t1;
|
||
DROP TABLE IF EXISTS bug24219;
|
||
DROP TABLE IF EXISTS bug24219_2;
|
||
CREATE TABLE bug24219 (a INT, INDEX(a));
|
||
SHOW INDEX FROM bug24219;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
bug24219 1 a 1 a A NULL NULL NULL YES BTREE
|
||
ALTER TABLE bug24219 RENAME TO bug24219_2, DISABLE KEYS;
|
||
SHOW INDEX FROM bug24219_2;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
bug24219_2 1 a 1 a A NULL NULL NULL YES BTREE disabled
|
||
DROP TABLE bug24219_2;
|
||
drop table if exists table_24562;
|
||
create table table_24562(
|
||
section int,
|
||
subsection int,
|
||
title varchar(50));
|
||
insert into table_24562 values
|
||
(1, 0, "Introduction"),
|
||
(1, 1, "Authors"),
|
||
(1, 2, "Acknowledgements"),
|
||
(2, 0, "Basics"),
|
||
(2, 1, "Syntax"),
|
||
(2, 2, "Client"),
|
||
(2, 3, "Server"),
|
||
(3, 0, "Intermediate"),
|
||
(3, 1, "Complex queries"),
|
||
(3, 2, "Stored Procedures"),
|
||
(3, 3, "Stored Functions"),
|
||
(4, 0, "Advanced"),
|
||
(4, 1, "Replication"),
|
||
(4, 2, "Load balancing"),
|
||
(4, 3, "High availability"),
|
||
(5, 0, "Conclusion");
|
||
select * from table_24562;
|
||
section subsection title
|
||
1 0 Introduction
|
||
1 1 Authors
|
||
1 2 Acknowledgements
|
||
2 0 Basics
|
||
2 1 Syntax
|
||
2 2 Client
|
||
2 3 Server
|
||
3 0 Intermediate
|
||
3 1 Complex queries
|
||
3 2 Stored Procedures
|
||
3 3 Stored Functions
|
||
4 0 Advanced
|
||
4 1 Replication
|
||
4 2 Load balancing
|
||
4 3 High availability
|
||
5 0 Conclusion
|
||
alter table table_24562 add column reviewer varchar(20),
|
||
order by title;
|
||
select * from table_24562;
|
||
section subsection title reviewer
|
||
1 2 Acknowledgements NULL
|
||
4 0 Advanced NULL
|
||
1 1 Authors NULL
|
||
2 0 Basics NULL
|
||
2 2 Client NULL
|
||
3 1 Complex queries NULL
|
||
5 0 Conclusion NULL
|
||
4 3 High availability NULL
|
||
3 0 Intermediate NULL
|
||
1 0 Introduction NULL
|
||
4 2 Load balancing NULL
|
||
4 1 Replication NULL
|
||
2 3 Server NULL
|
||
3 3 Stored Functions NULL
|
||
3 2 Stored Procedures NULL
|
||
2 1 Syntax NULL
|
||
update table_24562 set reviewer="Me" where section=2;
|
||
update table_24562 set reviewer="You" where section=3;
|
||
alter table table_24562
|
||
order by section ASC, subsection DESC;
|
||
select * from table_24562;
|
||
section subsection title reviewer
|
||
1 2 Acknowledgements NULL
|
||
1 1 Authors NULL
|
||
1 0 Introduction NULL
|
||
2 3 Server Me
|
||
2 2 Client Me
|
||
2 1 Syntax Me
|
||
2 0 Basics Me
|
||
3 3 Stored Functions You
|
||
3 2 Stored Procedures You
|
||
3 1 Complex queries You
|
||
3 0 Intermediate You
|
||
4 3 High availability NULL
|
||
4 2 Load balancing NULL
|
||
4 1 Replication NULL
|
||
4 0 Advanced NULL
|
||
5 0 Conclusion NULL
|
||
alter table table_24562
|
||
order by table_24562.subsection ASC, table_24562.section DESC;
|
||
select * from table_24562;
|
||
section subsection title reviewer
|
||
5 0 Conclusion NULL
|
||
4 0 Advanced NULL
|
||
3 0 Intermediate You
|
||
2 0 Basics Me
|
||
1 0 Introduction NULL
|
||
4 1 Replication NULL
|
||
3 1 Complex queries You
|
||
2 1 Syntax Me
|
||
1 1 Authors NULL
|
||
4 2 Load balancing NULL
|
||
3 2 Stored Procedures You
|
||
2 2 Client Me
|
||
1 2 Acknowledgements NULL
|
||
4 3 High availability NULL
|
||
3 3 Stored Functions You
|
||
2 3 Server Me
|
||
alter table table_24562 order by 12;
|
||
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '12' at line 1
|
||
alter table table_24562 order by (section + 12);
|
||
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(section + 12)' at line 1
|
||
alter table table_24562 order by length(title);
|
||
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(title)' at line 1
|
||
alter table table_24562 order by (select 12 from dual);
|
||
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(select 12 from dual)' at line 1
|
||
alter table table_24562 order by no_such_col;
|
||
ERROR 42S22: Unknown column 'no_such_col' in 'order clause'
|
||
drop table table_24562;
|
||
create table t1 (mycol int(10) not null);
|
||
alter table t1 alter column mycol set default 0;
|
||
desc t1;
|
||
Field Type Null Key Default Extra
|
||
mycol int(10) NO 0
|
||
drop table t1;
|
||
create table t1(id int(8) primary key auto_increment) engine=heap;
|
||
insert into t1 values (null);
|
||
insert into t1 values (null);
|
||
select * from t1;
|
||
id
|
||
1
|
||
2
|
||
alter table t1 auto_increment = 50;
|
||
alter table t1 engine = myisam;
|
||
insert into t1 values (null);
|
||
select * from t1;
|
||
id
|
||
1
|
||
2
|
||
50
|
||
alter table t1 engine = heap;
|
||
insert into t1 values (null);
|
||
select * from t1;
|
||
id
|
||
1
|
||
2
|
||
50
|
||
51
|
||
drop table t1;
|
||
set @orig_sql_mode = @@sql_mode;
|
||
set sql_mode="no_zero_date";
|
||
create table t1(f1 int);
|
||
alter table t1 add column f2 datetime not null, add column f21 date not null;
|
||
insert into t1 values(1,'2000-01-01','2000-01-01');
|
||
alter table t1 add column f3 datetime not null;
|
||
ERROR 22007: Incorrect datetime value: '0000-00-00 00:00:00' for column 'f3' at row 1
|
||
alter table t1 add column f3 date not null;
|
||
ERROR 22007: Incorrect date value: '0000-00-00' for column 'f3' at row 1
|
||
alter table t1 add column f4 datetime not null default '2002-02-02',
|
||
add column f41 date not null;
|
||
ERROR 22007: Incorrect date value: '0000-00-00' for column 'f41' at row 1
|
||
alter table t1 add column f4 datetime not null default '2002-02-02',
|
||
add column f41 date not null default '2002-02-02';
|
||
select * from t1;
|
||
f1 f2 f21 f4 f41
|
||
1 2000-01-01 00:00:00 2000-01-01 2002-02-02 00:00:00 2002-02-02
|
||
drop table t1;
|
||
set sql_mode= @orig_sql_mode;
|
||
create table t1 (v varchar(32));
|
||
insert into t1 values ('def'),('abc'),('hij'),('3r4f');
|
||
select * from t1;
|
||
v
|
||
def
|
||
abc
|
||
hij
|
||
3r4f
|
||
alter table t1 change v v2 varchar(32);
|
||
select * from t1;
|
||
v2
|
||
def
|
||
abc
|
||
hij
|
||
3r4f
|
||
alter table t1 change v2 v varchar(64);
|
||
select * from t1;
|
||
v
|
||
def
|
||
abc
|
||
hij
|
||
3r4f
|
||
update t1 set v = 'lmn' where v = 'hij';
|
||
select * from t1;
|
||
v
|
||
def
|
||
abc
|
||
lmn
|
||
3r4f
|
||
alter table t1 add i int auto_increment not null primary key first;
|
||
select * from t1;
|
||
i v
|
||
1 def
|
||
2 abc
|
||
3 lmn
|
||
4 3r4f
|
||
update t1 set i=5 where i=3;
|
||
select * from t1;
|
||
i v
|
||
1 def
|
||
2 abc
|
||
5 lmn
|
||
4 3r4f
|
||
alter table t1 change i i bigint;
|
||
select * from t1;
|
||
i v
|
||
1 def
|
||
2 abc
|
||
5 lmn
|
||
4 3r4f
|
||
alter table t1 add unique key (i, v);
|
||
select * from t1 where i between 2 and 4 and v in ('def','3r4f','lmn');
|
||
i v
|
||
4 3r4f
|
||
drop table t1;
|
||
create table t1 (t varchar(255) default null, key t (t(80)))
|
||
engine=myisam default charset=latin1;
|
||
alter table t1 change t t text;
|
||
drop table t1;
|
||
CREATE TABLE t1 (a varchar(500));
|
||
ALTER TABLE t1 ADD b GEOMETRY NOT NULL, ADD SPATIAL INDEX(b);
|
||
SHOW CREATE TABLE t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` varchar(500) DEFAULT NULL,
|
||
`b` geometry NOT NULL,
|
||
SPATIAL KEY `b` (`b`)
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
ALTER TABLE t1 ADD KEY(b(50));
|
||
SHOW CREATE TABLE t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` varchar(500) DEFAULT NULL,
|
||
`b` geometry NOT NULL,
|
||
SPATIAL KEY `b` (`b`),
|
||
KEY `b_2` (`b`(50))
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
ALTER TABLE t1 ADD c POINT;
|
||
SHOW CREATE TABLE t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` varchar(500) DEFAULT NULL,
|
||
`b` geometry NOT NULL,
|
||
`c` point DEFAULT NULL,
|
||
SPATIAL KEY `b` (`b`),
|
||
KEY `b_2` (`b`(50))
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
CREATE TABLE t2 (a INT, KEY (a(20)));
|
||
ERROR HY000: Incorrect prefix key; the used key part isn't a string, the used length is longer than the key part, or the storage engine doesn't support unique prefix keys
|
||
ALTER TABLE t1 ADD d INT;
|
||
ALTER TABLE t1 ADD KEY (d(20));
|
||
ERROR HY000: Incorrect prefix key; the used key part isn't a string, the used length is longer than the key part, or the storage engine doesn't support unique prefix keys
|
||
ALTER TABLE t1 ADD e GEOMETRY NOT NULL, ADD SPATIAL KEY (e(30));
|
||
ERROR HY000: Incorrect prefix key; the used key part isn't a string, the used length is longer than the key part, or the storage engine doesn't support unique prefix keys
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (s CHAR(8) BINARY);
|
||
INSERT INTO t1 VALUES ('test');
|
||
SELECT LENGTH(s) FROM t1;
|
||
LENGTH(s)
|
||
4
|
||
ALTER TABLE t1 MODIFY s CHAR(10) BINARY;
|
||
SELECT LENGTH(s) FROM t1;
|
||
LENGTH(s)
|
||
4
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (s BINARY(8));
|
||
INSERT INTO t1 VALUES ('test');
|
||
SELECT LENGTH(s) FROM t1;
|
||
LENGTH(s)
|
||
8
|
||
SELECT HEX(s) FROM t1;
|
||
HEX(s)
|
||
7465737400000000
|
||
ALTER TABLE t1 MODIFY s BINARY(10);
|
||
SELECT HEX(s) FROM t1;
|
||
HEX(s)
|
||
74657374000000000000
|
||
SELECT LENGTH(s) FROM t1;
|
||
LENGTH(s)
|
||
10
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (v VARCHAR(3), b INT);
|
||
INSERT INTO t1 VALUES ('abc', 5);
|
||
SELECT * FROM t1;
|
||
v b
|
||
abc 5
|
||
ALTER TABLE t1 MODIFY COLUMN v VARCHAR(4);
|
||
SELECT * FROM t1;
|
||
v b
|
||
abc 5
|
||
DROP TABLE t1;
|
||
create table t1 (a tinytext character set latin1);
|
||
alter table t1 convert to character set utf8;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` text
|
||
) ENGINE=MyISAM DEFAULT CHARSET=utf8
|
||
drop table t1;
|
||
create table t1 (a mediumtext character set latin1);
|
||
alter table t1 convert to character set utf8;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` longtext
|
||
) ENGINE=MyISAM DEFAULT CHARSET=utf8
|
||
drop table t1;
|
||
End of 5.0 tests
|
||
drop table if exists t1, t2, t3;
|
||
create table t1 (i int);
|
||
create table t3 (j int);
|
||
insert into t1 values ();
|
||
insert into t3 values ();
|
||
lock table t1 write, t3 read;
|
||
alter table t1 modify i int default 1;
|
||
insert into t1 values ();
|
||
select * from t1;
|
||
i
|
||
NULL
|
||
1
|
||
alter table t1 change i c char(10) default "Two";
|
||
insert into t1 values ();
|
||
select * from t1;
|
||
c
|
||
NULL
|
||
1
|
||
Two
|
||
alter table t1 modify c char(10) default "Three", rename to t2;
|
||
select * from t1;
|
||
ERROR HY000: Table 't1' was not locked with LOCK TABLES
|
||
select * from t2;
|
||
ERROR HY000: Table 't2' was not locked with LOCK TABLES
|
||
select * from t3;
|
||
j
|
||
NULL
|
||
unlock tables;
|
||
insert into t2 values ();
|
||
select * from t2;
|
||
c
|
||
NULL
|
||
1
|
||
Two
|
||
Three
|
||
lock table t2 write, t3 read;
|
||
alter table t2 change c vc varchar(100) default "Four", rename to t1;
|
||
select * from t1;
|
||
ERROR HY000: Table 't1' was not locked with LOCK TABLES
|
||
select * from t2;
|
||
ERROR HY000: Table 't2' was not locked with LOCK TABLES
|
||
select * from t3;
|
||
j
|
||
NULL
|
||
unlock tables;
|
||
insert into t1 values ();
|
||
select * from t1;
|
||
vc
|
||
NULL
|
||
1
|
||
Two
|
||
Three
|
||
Four
|
||
drop tables t1, t3;
|
||
DROP TABLE IF EXISTS `t+1`, `t+2`;
|
||
CREATE TABLE `t+1` (c1 INT);
|
||
ALTER TABLE `t+1` RENAME `t+2`;
|
||
CREATE TABLE `t+1` (c1 INT);
|
||
ALTER TABLE `t+1` RENAME `t+2`;
|
||
ERROR 42S01: Table 't+2' already exists
|
||
DROP TABLE `t+1`, `t+2`;
|
||
CREATE TEMPORARY TABLE `tt+1` (c1 INT);
|
||
ALTER TABLE `tt+1` RENAME `tt+2`;
|
||
CREATE TEMPORARY TABLE `tt+1` (c1 INT);
|
||
ALTER TABLE `tt+1` RENAME `tt+2`;
|
||
ERROR 42S01: Table 'tt+2' already exists
|
||
SHOW CREATE TABLE `tt+1`;
|
||
Table Create Table
|
||
tt+1 CREATE TEMPORARY TABLE `tt+1` (
|
||
`c1` int(11) DEFAULT NULL
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
SHOW CREATE TABLE `tt+2`;
|
||
Table Create Table
|
||
tt+2 CREATE TEMPORARY TABLE `tt+2` (
|
||
`c1` int(11) DEFAULT NULL
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
DROP TABLE `tt+1`, `tt+2`;
|
||
CREATE TABLE `#sql1` (c1 INT);
|
||
CREATE TABLE `@0023sql2` (c1 INT);
|
||
SHOW TABLES;
|
||
Tables_in_test
|
||
#sql1
|
||
@0023sql2
|
||
RENAME TABLE `#sql1` TO `@0023sql1`;
|
||
RENAME TABLE `@0023sql2` TO `#sql2`;
|
||
SHOW TABLES;
|
||
Tables_in_test
|
||
#sql2
|
||
@0023sql1
|
||
ALTER TABLE `@0023sql1` RENAME `#sql-1`;
|
||
ALTER TABLE `#sql2` RENAME `@0023sql-2`;
|
||
SHOW TABLES;
|
||
Tables_in_test
|
||
#sql-1
|
||
@0023sql-2
|
||
INSERT INTO `#sql-1` VALUES (1);
|
||
INSERT INTO `@0023sql-2` VALUES (2);
|
||
DROP TABLE `#sql-1`, `@0023sql-2`;
|
||
CREATE TEMPORARY TABLE `#sql1` (c1 INT);
|
||
CREATE TEMPORARY TABLE `@0023sql2` (c1 INT);
|
||
SHOW TABLES;
|
||
Tables_in_test
|
||
ALTER TABLE `#sql1` RENAME `@0023sql1`;
|
||
ALTER TABLE `@0023sql2` RENAME `#sql2`;
|
||
SHOW TABLES;
|
||
Tables_in_test
|
||
INSERT INTO `#sql2` VALUES (1);
|
||
INSERT INTO `@0023sql1` VALUES (2);
|
||
SHOW CREATE TABLE `#sql2`;
|
||
Table Create Table
|
||
#sql2 CREATE TEMPORARY TABLE `#sql2` (
|
||
`c1` int(11) DEFAULT NULL
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
SHOW CREATE TABLE `@0023sql1`;
|
||
Table Create Table
|
||
@0023sql1 CREATE TEMPORARY TABLE `@0023sql1` (
|
||
`c1` int(11) DEFAULT NULL
|
||
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
||
DROP TABLE `#sql2`, `@0023sql1`;
|
||
DROP TABLE IF EXISTS t1;
|
||
DROP TABLE IF EXISTS t2;
|
||
CREATE TABLE t1 (
|
||
int_field INTEGER UNSIGNED NOT NULL,
|
||
char_field CHAR(10),
|
||
INDEX(`int_field`)
|
||
);
|
||
DESCRIBE t1;
|
||
Field Type Null Key Default Extra
|
||
int_field int(10) unsigned NO MUL NULL
|
||
char_field char(10) YES NULL
|
||
SHOW INDEXES FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 1 int_field 1 int_field A NULL NULL NULL BTREE
|
||
INSERT INTO t1 VALUES (1, "edno"), (1, "edno"), (2, "dve"), (3, "tri"), (5, "pet");
|
||
"Non-copy data change - new frm, but old data and index files"
|
||
ALTER TABLE t1
|
||
CHANGE int_field unsigned_int_field INTEGER UNSIGNED NOT NULL,
|
||
RENAME t2;
|
||
SELECT * FROM t1 ORDER BY int_field;
|
||
ERROR 42S02: Table 'test.t1' doesn't exist
|
||
SELECT * FROM t2 ORDER BY unsigned_int_field;
|
||
unsigned_int_field char_field
|
||
1 edno
|
||
1 edno
|
||
2 dve
|
||
3 tri
|
||
5 pet
|
||
DESCRIBE t2;
|
||
Field Type Null Key Default Extra
|
||
unsigned_int_field int(10) unsigned NO MUL NULL
|
||
char_field char(10) YES NULL
|
||
DESCRIBE t2;
|
||
Field Type Null Key Default Extra
|
||
unsigned_int_field int(10) unsigned NO MUL NULL
|
||
char_field char(10) YES NULL
|
||
ALTER TABLE t2 MODIFY unsigned_int_field BIGINT UNSIGNED NOT NULL;
|
||
DESCRIBE t2;
|
||
Field Type Null Key Default Extra
|
||
unsigned_int_field bigint(20) unsigned NO MUL NULL
|
||
char_field char(10) YES NULL
|
||
DROP TABLE t2;
|
||
CREATE TABLE t1 (f1 INT, f2 INT, f3 INT);
|
||
INSERT INTO t1 VALUES (1, 2, NULL);
|
||
SELECT * FROM t1;
|
||
f1 f2 f3
|
||
1 2 NULL
|
||
ALTER TABLE t1 MODIFY COLUMN f3 INT AFTER f1;
|
||
SELECT * FROM t1;
|
||
f1 f3 f2
|
||
1 NULL 2
|
||
ALTER TABLE t1 MODIFY COLUMN f3 INT AFTER f2;
|
||
SELECT * FROM t1;
|
||
f1 f2 f3
|
||
1 2 NULL
|
||
DROP TABLE t1;
|
||
create table t1 (c char(10) default "Two");
|
||
lock table t1 write;
|
||
insert into t1 values ();
|
||
alter table t1 modify c char(10) default "Three";
|
||
unlock tables;
|
||
select * from t1;
|
||
c
|
||
Two
|
||
check table t1;
|
||
Table Op Msg_type Msg_text
|
||
test.t1 check status OK
|
||
drop table t1;
|
||
DROP TABLE IF EXISTS t1;
|
||
CREATE TABLE t1 (id int, c int) character set latin1;
|
||
INSERT INTO t1 VALUES (1,1);
|
||
ALTER TABLE t1 CHANGE c d int;
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
ALTER TABLE t1 CHANGE d c int;
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
ALTER TABLE t1 MODIFY c VARCHAR(10);
|
||
affected rows: 1
|
||
info: Records: 1 Duplicates: 0 Warnings: 0
|
||
ALTER TABLE t1 CHANGE c d varchar(10);
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
ALTER TABLE t1 CHANGE d c varchar(10);
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
DROP TABLE t1;
|
||
DROP TABLE IF EXISTS t1;
|
||
CREATE TABLE t1 (id int, c int) character set utf8;
|
||
INSERT INTO t1 VALUES (1,1);
|
||
ALTER TABLE t1 CHANGE c d int;
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
ALTER TABLE t1 CHANGE d c int;
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
ALTER TABLE t1 MODIFY c VARCHAR(10);
|
||
affected rows: 1
|
||
info: Records: 1 Duplicates: 0 Warnings: 0
|
||
ALTER TABLE t1 CHANGE c d varchar(10);
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
ALTER TABLE t1 CHANGE d c varchar(10);
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
DROP TABLE t1;
|
||
create table t1(f1 int not null, f2 int not null, key (f1), key (f2));
|
||
select index_length into @unpaked_keys_size from
|
||
information_schema.tables where table_name='t1';
|
||
alter table t1 pack_keys=1;
|
||
select index_length into @paked_keys_size from
|
||
information_schema.tables where table_name='t1';
|
||
select (@unpaked_keys_size > @paked_keys_size);
|
||
(@unpaked_keys_size > @paked_keys_size)
|
||
1
|
||
select max_data_length into @orig_max_data_length from
|
||
information_schema.tables where table_name='t1';
|
||
alter table t1 max_rows=100;
|
||
select max_data_length into @changed_max_data_length from
|
||
information_schema.tables where table_name='t1';
|
||
select (@orig_max_data_length > @changed_max_data_length);
|
||
(@orig_max_data_length > @changed_max_data_length)
|
||
1
|
||
drop table t1;
|
||
CREATE TABLE t1(a INT AUTO_INCREMENT PRIMARY KEY,
|
||
b ENUM('a', 'b', 'c') NOT NULL);
|
||
INSERT INTO t1 (b) VALUES ('a'), ('c'), ('b'), ('b'), ('a');
|
||
ALTER TABLE t1 MODIFY b ENUM('a', 'z', 'b', 'c') NOT NULL;
|
||
SELECT * FROM t1;
|
||
a b
|
||
1 a
|
||
2 c
|
||
3 b
|
||
4 b
|
||
5 a
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug#45567: Fast ALTER TABLE broken for enum and set
|
||
#
|
||
DROP TABLE IF EXISTS t1;
|
||
CREATE TABLE t1 (a ENUM('a1','a2'));
|
||
INSERT INTO t1 VALUES ('a1'),('a2');
|
||
# No copy: No modification
|
||
ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2');
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
# No copy: Add new enumeration to the end
|
||
ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','a3');
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
# Copy: Modify and add new to the end
|
||
ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','xx','a5');
|
||
affected rows: 2
|
||
info: Records: 2 Duplicates: 0 Warnings: 0
|
||
# Copy: Remove from the end
|
||
ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','xx');
|
||
affected rows: 2
|
||
info: Records: 2 Duplicates: 0 Warnings: 0
|
||
# Copy: Add new enumeration
|
||
ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','a0','xx');
|
||
affected rows: 2
|
||
info: Records: 2 Duplicates: 0 Warnings: 0
|
||
# No copy: Add new enumerations to the end
|
||
ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','a0','xx','a5','a6');
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (a SET('a1','a2'));
|
||
INSERT INTO t1 VALUES ('a1'),('a2');
|
||
# No copy: No modification
|
||
ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2');
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
# No copy: Add new to the end
|
||
ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a3');
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
# Copy: Modify and add new to the end
|
||
ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','xx','a5');
|
||
affected rows: 2
|
||
info: Records: 2 Duplicates: 0 Warnings: 0
|
||
# Copy: Remove from the end
|
||
ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','xx');
|
||
affected rows: 2
|
||
info: Records: 2 Duplicates: 0 Warnings: 0
|
||
# Copy: Add new member
|
||
ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a0','xx');
|
||
affected rows: 2
|
||
info: Records: 2 Duplicates: 0 Warnings: 0
|
||
# No copy: Add new to the end
|
||
ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a0','xx','a5','a6');
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
# Copy: Numerical incrase (pack lenght)
|
||
ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a0','xx','a5','a6','a7','a8','a9','a10');
|
||
affected rows: 2
|
||
info: Records: 2 Duplicates: 0 Warnings: 0
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (f1 TIMESTAMP NULL DEFAULT NULL,
|
||
f2 INT(11) DEFAULT NULL) ENGINE=MYISAM DEFAULT CHARSET=utf8;
|
||
INSERT INTO t1 VALUES (NULL, NULL), ("2009-10-09 11:46:19", 2);
|
||
this should affect no rows as there is no real change
|
||
ALTER TABLE t1 CHANGE COLUMN f1 f1_no_real_change TIMESTAMP NULL DEFAULT NULL;
|
||
affected rows: 0
|
||
info: Records: 0 Duplicates: 0 Warnings: 0
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug #31145: ALTER TABLE DROP COLUMN, ADD COLUMN crashes (linux)
|
||
# or freezes (win) the server
|
||
#
|
||
CREATE TABLE t1 (a TEXT, id INT, b INT);
|
||
ALTER TABLE t1 DROP COLUMN a, ADD COLUMN c TEXT FIRST;
|
||
DROP TABLE t1;
|
||
#
|
||
# Test for bug #12652385 - "61493: REORDERING COLUMNS TO POSITION
|
||
# FIRST CAN CAUSE DATA TO BE CORRUPTED".
|
||
#
|
||
drop table if exists t1;
|
||
# Use MyISAM engine as the fact that InnoDB doesn't support
|
||
# in-place ALTER TABLE in cases when columns are being renamed
|
||
# hides some bugs.
|
||
create table t1 (i int, j int) engine=myisam;
|
||
insert into t1 value (1, 2);
|
||
# First, test for original problem described in the bug report.
|
||
select * from t1;
|
||
i j
|
||
1 2
|
||
# Change of column order by the below ALTER TABLE statement should
|
||
# affect both column names and column contents.
|
||
alter table t1 modify column j int first;
|
||
select * from t1;
|
||
j i
|
||
2 1
|
||
# Now test for similar problem with the same root.
|
||
# The below ALTER TABLE should change not only the name but
|
||
# also the value for the last column of the table.
|
||
alter table t1 drop column i, add column k int default 0;
|
||
select * from t1;
|
||
j k
|
||
2 0
|
||
# Clean-up.
|
||
drop table t1;
|
||
End of 5.1 tests
|