mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 05:22:25 +01:00
cab1dc628c
New multi-key-cache handling. This was needed becasue the old one didn't work reliable with MERGE tables.
ALTER TABLE table_name ... CHARACTER SET ... now changes all char/varchar/text columns to the given character set
(One must use ALTER TABLE ... DEFAULT CHARACTER SET ... to change the default character set)
Fixed that have_compress is detected properly (fixes problems with func_compress.test on platforms without zlib)
New syntax for CACHE INDEX ('keys' is optional if no index name is given and one mentions the key cache name only ones)
Removed compiler warnings
Added mysql_set_server_option() to allow clients like PHP to easaily set/reset the multi-statement flag.
414 lines
15 KiB
Text
414 lines
15 KiB
Text
drop table if exists t1,t2;
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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 PRI 0 select,insert,update,references
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LANG_ID smallint(5) unsigned NULL PRI 0 select,insert,update,references
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NAME char(80) latin1_swedish_ci MUL select,insert,update,references
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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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) TYPE=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)) type=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 (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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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 (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 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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set names koi8r;
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create table t1 (a char(10) character set koi8r);
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insert into t1 values ('<27><><EFBFBD><EFBFBD>');
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select a,hex(a) from t1;
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a hex(a)
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
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alter table t1 change a a char(10) character set cp1251;
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select a,hex(a) from t1;
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a hex(a)
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
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alter table t1 change a a char(10) binary;
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select a,hex(a) from t1;
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a hex(a)
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
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alter table t1 change a a char(10) character set cp1251;
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select a,hex(a) from t1;
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a hex(a)
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
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alter table t1 change a a char(10) character set koi8r;
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select a,hex(a) from t1;
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a hex(a)
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
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alter table t1 change a a varchar(10) character set cp1251;
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select a,hex(a) from t1;
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a hex(a)
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
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alter table t1 change a a char(10) character set koi8r;
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select a,hex(a) from t1;
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a hex(a)
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
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alter table t1 change a a text character set cp1251;
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select a,hex(a) from t1;
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a hex(a)
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
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alter table t1 change a a char(10) character set koi8r;
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select a,hex(a) from t1;
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a hex(a)
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
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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` char(10) character set koi8r default NULL
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) TYPE=MyISAM DEFAULT CHARSET=latin1
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alter table t1 DEFAULT CHARACTER SET latin1;
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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` char(10) character set koi8r default NULL
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) TYPE=MyISAM DEFAULT CHARSET=latin1
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alter table t1 CHARACTER SET latin1;
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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` char(10) default NULL
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) TYPE=MyISAM DEFAULT CHARSET=latin1
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alter table t1 DEFAULT CHARACTER SET cp1251;
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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` char(10) character set latin1 default NULL
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) TYPE=MyISAM DEFAULT CHARSET=cp1251
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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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) TYPE=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;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 3 NULL NULL BTREE
|
||
ALTER TABLE t1 ENABLE KEYS;
|
||
UNLOCK TABLES;
|
||
CHECK TABLES t1;
|
||
Table Op Msg_type Msg_text
|
||
test.t1 check status OK
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (
|
||
Host varchar(16) binary NOT NULL default '',
|
||
User varchar(16) binary NOT NULL default '',
|
||
PRIMARY KEY (Host,User),
|
||
KEY (Host)
|
||
) TYPE=MyISAM;
|
||
ALTER TABLE t1 DISABLE KEYS;
|
||
SHOW INDEX FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 0 NULL NULL BTREE
|
||
t1 1 Host 1 Host A NULL NULL NULL BTREE disabled
|
||
LOCK TABLES t1 WRITE;
|
||
INSERT INTO t1 VALUES ('localhost','root'),('localhost','');
|
||
SHOW INDEX FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 2 NULL NULL BTREE
|
||
t1 1 Host 1 Host A NULL NULL NULL BTREE disabled
|
||
ALTER TABLE t1 ENABLE KEYS;
|
||
SHOW INDEX FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 2 NULL NULL BTREE
|
||
t1 1 Host 1 Host A 1 NULL NULL BTREE
|
||
UNLOCK TABLES;
|
||
CHECK TABLES t1;
|
||
Table Op Msg_type Msg_text
|
||
test.t1 check status OK
|
||
LOCK TABLES t1 WRITE;
|
||
ALTER TABLE t1 RENAME t2;
|
||
UNLOCK TABLES;
|
||
select * from t2;
|
||
Host User
|
||
localhost
|
||
localhost root
|
||
DROP TABLE t2;
|
||
CREATE TABLE t1 (
|
||
Host varchar(16) binary NOT NULL default '',
|
||
User varchar(16) binary NOT NULL default '',
|
||
PRIMARY KEY (Host,User),
|
||
KEY (Host)
|
||
) TYPE=MyISAM;
|
||
LOCK TABLES t1 WRITE;
|
||
ALTER TABLE t1 DISABLE KEYS;
|
||
SHOW INDEX FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 0 NULL NULL BTREE
|
||
t1 1 Host 1 Host A NULL NULL NULL BTREE disabled
|
||
DROP TABLE t1;
|