411 lines
9.6 KiB
Plaintext
411 lines
9.6 KiB
Plaintext
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DROP TABLE IF EXISTS t1, t2;
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CREATE TABLE t1 (a INT, b INT, c INT, UNIQUE (A), UNIQUE(B));
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INSERT t1 VALUES (1,2,10), (3,4,20);
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INSERT t1 VALUES (5,6,30) ON DUPLICATE KEY UPDATE c=c+100;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 20
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5 6 30
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INSERT t1 VALUES (5,7,40) ON DUPLICATE KEY UPDATE c=c+100;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 20
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5 6 130
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INSERT t1 VALUES (8,4,50) ON DUPLICATE KEY UPDATE c=c+1000;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 1020
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5 6 130
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INSERT t1 VALUES (1,4,60) ON DUPLICATE KEY UPDATE c=c+10000;
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SELECT * FROM t1;
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a b c
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1 2 10010
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3 4 1020
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5 6 130
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INSERT t1 VALUES (1,9,70) ON DUPLICATE KEY UPDATE c=c+100000, b=4;
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ERROR 23000: Duplicate entry '4' for key 'b'
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SELECT * FROM t1;
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a b c
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1 2 10010
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3 4 1020
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5 6 130
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TRUNCATE TABLE t1;
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INSERT t1 VALUES (1,2,10), (3,4,20);
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INSERT t1 VALUES (5,6,30), (7,4,40), (8,9,60) ON DUPLICATE KEY UPDATE c=c+100;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 120
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5 6 30
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8 9 60
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INSERT t1 SET a=5 ON DUPLICATE KEY UPDATE b=0;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 120
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5 0 30
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8 9 60
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INSERT t1 VALUES (2,1,11), (7,4,40) ON DUPLICATE KEY UPDATE c=c+VALUES(a);
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SELECT *, VALUES(a) FROM t1;
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a b c VALUES(a)
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1 2 10 NULL
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3 4 127 NULL
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5 0 30 NULL
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8 9 60 NULL
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2 1 11 NULL
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explain extended SELECT *, VALUES(a) FROM t1;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
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Warnings:
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Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c`,values(`test`.`t1`.`a`) AS `VALUES(a)` from `test`.`t1`
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explain extended select * from t1 where values(a);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where
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Warnings:
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Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where values(`test`.`t1`.`a`)
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DROP TABLE t1;
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create table t1(a int primary key, b int);
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insert into t1 values(1,1),(2,2),(3,3),(4,4),(5,5);
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select * from t1;
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a b
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1 1
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2 2
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3 3
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4 4
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5 5
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insert into t1 values(4,14),(5,15),(6,16),(7,17),(8,18)
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on duplicate key update b=b+10;
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affected rows: 7
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info: Records: 5 Duplicates: 2 Warnings: 0
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select * from t1;
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a b
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1 1
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2 2
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3 3
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4 14
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5 15
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6 16
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7 17
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8 18
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replace into t1 values(5,25),(6,26),(7,27),(8,28),(9,29);
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affected rows: 9
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info: Records: 5 Duplicates: 4 Warnings: 0
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select * from t1;
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a b
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1 1
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2 2
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3 3
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4 14
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5 25
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6 26
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7 27
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8 28
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9 29
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drop table t1;
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CREATE TABLE t1 (a INT, b INT, c INT, UNIQUE (A), UNIQUE(B));
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INSERT t1 VALUES (1,2,10), (3,4,20);
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INSERT t1 SELECT 5,6,30 FROM DUAL ON DUPLICATE KEY UPDATE c=c+100;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 20
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5 6 30
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INSERT t1 SELECT 5,7,40 FROM DUAL ON DUPLICATE KEY UPDATE c=c+100;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 20
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5 6 130
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INSERT t1 SELECT 8,4,50 FROM DUAL ON DUPLICATE KEY UPDATE c=c+1000;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 1020
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5 6 130
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INSERT t1 SELECT 1,4,60 FROM DUAL ON DUPLICATE KEY UPDATE c=c+10000;
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SELECT * FROM t1;
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a b c
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1 2 10010
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3 4 1020
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5 6 130
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INSERT t1 SELECT 1,9,70 FROM DUAL ON DUPLICATE KEY UPDATE c=c+100000, b=4;
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ERROR 23000: Duplicate entry '4' for key 'b'
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SELECT * FROM t1;
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a b c
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1 2 10010
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3 4 1020
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5 6 130
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TRUNCATE TABLE t1;
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INSERT t1 VALUES (1,2,10), (3,4,20);
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CREATE TABLE t2 (a INT, b INT, c INT, d INT);
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INSERT t2 VALUES (5,6,30,1), (7,4,40,1), (8,9,60,1);
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INSERT t2 VALUES (2,1,11,2), (7,4,40,2);
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INSERT t1 SELECT a,b,c FROM t2 WHERE d=1 ON DUPLICATE KEY UPDATE c=t1.c+100;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 120
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5 6 30
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8 9 60
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INSERT t1 SET a=5 ON DUPLICATE KEY UPDATE b=0;
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SELECT * FROM t1;
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a b c
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1 2 10
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3 4 120
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5 0 30
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8 9 60
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INSERT t1 SELECT a,b,c FROM t2 WHERE d=2 ON DUPLICATE KEY UPDATE c=c+VALUES(a);
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ERROR 23000: Column 'c' in field list is ambiguous
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INSERT t1 SELECT a,b,c FROM t2 WHERE d=2 ON DUPLICATE KEY UPDATE c=t1.c+VALUES(t1.a);
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SELECT *, VALUES(a) FROM t1;
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a b c VALUES(a)
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1 2 10 NULL
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3 4 127 NULL
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5 0 30 NULL
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8 9 60 NULL
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2 1 11 NULL
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DROP TABLE t1;
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DROP TABLE t2;
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create table t1 (a int not null unique) engine=myisam;
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insert into t1 values (1),(2);
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insert ignore into t1 select 1 on duplicate key update a=2;
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select * from t1;
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a
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1
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2
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insert ignore into t1 select a from t1 as t2 on duplicate key update a=t1.a+1 ;
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select * from t1;
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a
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1
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3
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insert into t1 select 1 on duplicate key update a=2;
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select * from t1;
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a
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2
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3
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insert into t1 select a from t1 on duplicate key update a=a+1 ;
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ERROR 23000: Column 'a' in field list is ambiguous
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insert ignore into t1 select a from t1 on duplicate key update a=t1.a+1 ;
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ERROR 23000: Column 't1.a' in field list is ambiguous
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drop table t1;
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CREATE TABLE t1 (
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a BIGINT(20) NOT NULL DEFAULT 0,
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PRIMARY KEY (a)
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) ENGINE=MyISAM;
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INSERT INTO t1 ( a ) SELECT 0 ON DUPLICATE KEY UPDATE a = a + VALUES (a) ;
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DROP TABLE t1;
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CREATE TABLE t1
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(
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a BIGINT UNSIGNED,
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b BIGINT UNSIGNED,
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PRIMARY KEY (a)
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);
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INSERT INTO t1 VALUES (45, 1) ON DUPLICATE KEY UPDATE b =
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IF(VALUES(b) > t1.b, VALUES(b), t1.b);
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SELECT * FROM t1;
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a b
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45 1
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INSERT INTO t1 VALUES (45, 2) ON DUPLICATE KEY UPDATE b =
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IF(VALUES(b) > t1.b, VALUES(b), t1.b);
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SELECT * FROM t1;
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a b
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45 2
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INSERT INTO t1 VALUES (45, 1) ON DUPLICATE KEY UPDATE b =
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IF(VALUES(b) > t1.b, VALUES(b), t1.b);
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SELECT * FROM t1;
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a b
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45 2
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DROP TABLE t1;
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CREATE TABLE t1 (i INT PRIMARY KEY, j INT);
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INSERT INTO t1 SELECT 1, j;
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ERROR 42S22: Unknown column 'j' in 'field list'
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DROP TABLE t1;
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CREATE TABLE t1 (i INT PRIMARY KEY, j INT);
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CREATE TABLE t2 (a INT, b INT);
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CREATE TABLE t3 (a INT, c INT);
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INSERT INTO t1 SELECT 1, a FROM t2 NATURAL JOIN t3
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ON DUPLICATE KEY UPDATE j= a;
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DROP TABLE t1,t2,t3;
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CREATE TABLE t1 (i INT PRIMARY KEY, j INT);
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CREATE TABLE t2 (a INT);
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INSERT INTO t1 VALUES (1, 1);
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INSERT INTO t2 VALUES (1), (3);
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INSERT INTO t1 SELECT 1, COUNT(*) FROM t2 ON DUPLICATE KEY UPDATE j= a;
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ERROR 42S22: Unknown column 'a' in 'field list'
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DROP TABLE t1,t2;
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SET SQL_MODE = 'TRADITIONAL';
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CREATE TABLE t1 (a INT PRIMARY KEY, b INT NOT NULL);
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INSERT INTO t1 (a) VALUES (1);
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ERROR HY000: Field 'b' doesn't have a default value
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INSERT INTO t1 (a) VALUES (1) ON DUPLICATE KEY UPDATE a = b;
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ERROR HY000: Field 'b' doesn't have a default value
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INSERT INTO t1 (a) VALUES (1) ON DUPLICATE KEY UPDATE b = b;
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ERROR HY000: Field 'b' doesn't have a default value
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SELECT * FROM t1;
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a b
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DROP TABLE t1;
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CREATE TABLE t1 (f1 INT AUTO_INCREMENT PRIMARY KEY,
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f2 VARCHAR(5) NOT NULL UNIQUE);
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INSERT t1 (f2) VALUES ('test') ON DUPLICATE KEY UPDATE f1 = LAST_INSERT_ID(f1);
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SELECT LAST_INSERT_ID();
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LAST_INSERT_ID()
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1
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INSERT t1 (f2) VALUES ('test') ON DUPLICATE KEY UPDATE f1 = LAST_INSERT_ID(f1);
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SELECT LAST_INSERT_ID();
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LAST_INSERT_ID()
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1
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DROP TABLE t1;
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SET SQL_MODE='NO_AUTO_VALUE_ON_ZERO';
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CREATE TABLE `t1` (
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`id` int(11) PRIMARY KEY auto_increment,
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`f1` varchar(10) NOT NULL UNIQUE
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);
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INSERT IGNORE INTO t1 (f1) VALUES ("test1")
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ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);
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INSERT IGNORE INTO t1 (f1) VALUES ("test1")
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ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);
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SELECT LAST_INSERT_ID();
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LAST_INSERT_ID()
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1
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SELECT * FROM t1;
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id f1
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1 test1
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INSERT IGNORE INTO t1 (f1) VALUES ("test2")
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ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);
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SELECT * FROM t1;
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id f1
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1 test1
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2 test2
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INSERT IGNORE INTO t1 (f1) VALUES ("test2")
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ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);
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SELECT LAST_INSERT_ID();
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LAST_INSERT_ID()
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2
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SELECT * FROM t1;
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id f1
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1 test1
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2 test2
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INSERT IGNORE INTO t1 (f1) VALUES ("test3")
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ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);
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SELECT LAST_INSERT_ID();
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LAST_INSERT_ID()
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3
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SELECT * FROM t1;
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id f1
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1 test1
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2 test2
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3 test3
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DROP TABLE t1;
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CREATE TABLE `t1` (
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`id` int(11) PRIMARY KEY auto_increment,
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`f1` varchar(10) NOT NULL UNIQUE
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);
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INSERT IGNORE INTO t1 (f1) VALUES ("test1")
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ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);
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SELECT LAST_INSERT_ID();
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LAST_INSERT_ID()
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1
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SELECT * FROM t1;
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id f1
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1 test1
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INSERT IGNORE INTO t1 (f1) VALUES ("test1"),("test4")
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ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id);
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SELECT LAST_INSERT_ID();
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LAST_INSERT_ID()
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2
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SELECT * FROM t1;
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id f1
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1 test1
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2 test4
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DROP TABLE t1;
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CREATE TABLE `t1` (
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`id` int(11) PRIMARY KEY auto_increment,
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`f1` varchar(10) NOT NULL UNIQUE,
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tim1 timestamp default '2003-01-01 00:00:00' on update current_timestamp
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);
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INSERT INTO t1 (f1) VALUES ("test1");
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SELECT id, f1 FROM t1;
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id f1
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1 test1
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REPLACE INTO t1 VALUES (0,"test1",null);
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SELECT id, f1 FROM t1;
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id f1
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0 test1
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DROP TABLE t1;
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SET SQL_MODE='';
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CREATE TABLE t1 (
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id INT AUTO_INCREMENT PRIMARY KEY,
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c1 CHAR(1) UNIQUE KEY,
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cnt INT DEFAULT 1
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);
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INSERT INTO t1 (c1) VALUES ('A'), ('B'), ('C');
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SELECT * FROM t1;
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id c1 cnt
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1 A 1
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2 B 1
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3 C 1
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INSERT INTO t1 (c1) VALUES ('A'), ('X'), ('Y'), ('Z')
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ON DUPLICATE KEY UPDATE cnt=cnt+1;
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SELECT * FROM t1;
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id c1 cnt
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1 A 2
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2 B 1
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|
|
3 C 1
|
||
|
|
4 X 1
|
||
|
|
5 Y 1
|
||
|
|
6 Z 1
|
||
|
|
DROP TABLE t1;
|
||
|
|
CREATE TABLE t1 (
|
||
|
|
id INT AUTO_INCREMENT PRIMARY KEY,
|
||
|
|
c1 INT NOT NULL,
|
||
|
|
cnt INT DEFAULT 1
|
||
|
|
);
|
||
|
|
INSERT INTO t1 (id,c1) VALUES (1,10);
|
||
|
|
SELECT * FROM t1;
|
||
|
|
id c1 cnt
|
||
|
|
1 10 1
|
||
|
|
CREATE TABLE t2 (id INT, c1 INT);
|
||
|
|
INSERT INTO t2 VALUES (1,NULL), (2,2);
|
||
|
|
INSERT INTO t1 (id,c1) SELECT 1,NULL
|
||
|
|
ON DUPLICATE KEY UPDATE c1=NULL;
|
||
|
|
ERROR 23000: Column 'c1' cannot be null
|
||
|
|
SELECT * FROM t1;
|
||
|
|
id c1 cnt
|
||
|
|
1 10 1
|
||
|
|
INSERT IGNORE INTO t1 (id,c1) SELECT 1,NULL
|
||
|
|
ON DUPLICATE KEY UPDATE c1=NULL, cnt=cnt+1;
|
||
|
|
Warnings:
|
||
|
|
Warning 1048 Column 'c1' cannot be null
|
||
|
|
Error 1048 Column 'c1' cannot be null
|
||
|
|
SELECT * FROM t1;
|
||
|
|
id c1 cnt
|
||
|
|
1 0 2
|
||
|
|
INSERT IGNORE INTO t1 (id,c1) SELECT * FROM t2
|
||
|
|
ON DUPLICATE KEY UPDATE c1=NULL, cnt=cnt+1;
|
||
|
|
Warnings:
|
||
|
|
Warning 1048 Column 'c1' cannot be null
|
||
|
|
Error 1048 Column 'c1' cannot be null
|
||
|
|
SELECT * FROM t1;
|
||
|
|
id c1 cnt
|
||
|
|
1 0 3
|
||
|
|
2 2 1
|
||
|
|
DROP TABLE t1;
|
||
|
|
DROP TABLE t2;
|
||
|
|
create table t1(f1 int primary key,
|
||
|
|
f2 timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP);
|
||
|
|
insert into t1(f1) values(1);
|
||
|
|
select @stamp1:=f2 from t1;
|
||
|
|
@stamp1:=f2
|
||
|
|
#
|
||
|
|
insert into t1(f1) values(1) on duplicate key update f1=1;
|
||
|
|
select @stamp2:=f2 from t1;
|
||
|
|
@stamp2:=f2
|
||
|
|
#
|
||
|
|
select if( @stamp1 = @stamp2, "correct", "wrong");
|
||
|
|
if( @stamp1 = @stamp2, "correct", "wrong")
|
||
|
|
correct
|
||
|
|
drop table t1;
|