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https://github.com/MariaDB/server.git
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108 lines
2.4 KiB
Plaintext
108 lines
2.4 KiB
Plaintext
drop table if exists t1;
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create table t1 (a int not null auto_increment,b int, primary key (a)) type=myisam auto_increment=3;
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insert into t1 values (1,1),(NULL,3),(NULL,4);
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delete from t1 where a=4;
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insert into t1 values (NULL,5),(NULL,6);
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select * from t1;
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a b
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1 1
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3 3
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5 5
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6 6
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delete from t1 where a=6;
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replace t1 values (3,1);
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ALTER TABLE t1 add c int;
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replace t1 values (3,3,3);
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insert into t1 values (NULL,7,7);
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update t1 set a=8,b=b+1,c=c+1 where a=7;
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insert into t1 values (NULL,9,9);
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select * from t1;
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a b c
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1 1 NULL
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3 3 3
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5 5 NULL
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8 8 8
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9 9 9
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drop table t1;
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create table t1 (
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skey tinyint unsigned NOT NULL auto_increment PRIMARY KEY,
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sval char(20)
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);
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insert into t1 values (NULL, "hello");
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insert into t1 values (NULL, "hey");
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select * from t1;
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skey sval
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1 hello
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2 hey
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select _rowid,t1._rowid,skey,sval from t1;
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_rowid _rowid skey sval
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1 1 1 hello
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2 2 2 hey
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drop table t1;
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create table t1 (a char(10) not null, b int not null auto_increment, primary key(a,b));
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insert into t1 values ("a",1),("b",2),("a",2),("c",1);
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insert into t1 values ("a",NULL),("b",NULL),("c",NULL),("e",NULL);
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insert into t1 (a) values ("a"),("b"),("c"),("d");
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insert into t1 (a) values ('k'),('d');
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insert into t1 (a) values ("a");
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insert into t1 values ("d",last_insert_id());
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select * from t1;
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a b
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a 1
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a 2
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a 3
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a 4
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a 5
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b 2
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b 3
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b 4
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c 1
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c 2
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c 3
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d 1
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d 2
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d 5
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e 1
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k 1
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drop table t1;
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create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ordid), index(ord,ordid));
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insert into t1 (ordid,ord) values (NULL,'sdj'),(NULL,'sdj');
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select * from t1;
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ordid ord
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1 sdj
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2 sdj
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drop table t1;
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create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid));
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insert into t1 values (NULL,'sdj'),(NULL,'sdj'),(NULL,"abc"),(NULL,'abc'),(NULL,'zzz'),(NULL,'sdj'),(NULL,'abc');
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select * from t1;
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ordid ord
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1 abc
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2 abc
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3 abc
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1 sdj
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2 sdj
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3 sdj
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1 zzz
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drop table t1;
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create table t1 (sid char(5), id int(2) NOT NULL auto_increment, key(sid, id));
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create table t2 (sid char(20), id int(2));
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insert into t2 values ('skr',NULL),('skr',NULL),('test',NULL);
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insert into t1 select * from t2;
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select * from t1;
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sid id
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skr 1
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skr 2
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test 1
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drop table t1,t2;
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create table t1 (a int not null primary key auto_increment);
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insert into t1 values (0);
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update t1 set a=0;
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select * from t1;
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a
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0
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check table t1;
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Table Op Msg_type Msg_text
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test.t1 check warning Found row where the auto_increment column has the value 0
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test.t1 check status OK
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drop table t1;
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