mirror of
https://github.com/MariaDB/server.git
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234 lines
6 KiB
Text
234 lines
6 KiB
Text
SET sql_mode='STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,SIMULTANEOUS_ASSIGNMENT';
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#
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# MDEV-13417 UPDATE produces wrong values if an UPDATEd column is later used as an UPDATE source
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#
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CREATE TABLE t1 (c1 INTEGER, c2 INTEGER, c3 INTEGER) ENGINE=InnoDb;
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INSERT INTO t1(c1,c2,c3) VALUES (1,1,1);
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CREATE TABLE t2 (c1 INTEGER, c2 INTEGER, c3 INTEGER) ENGINE=InnoDb;
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INSERT INTO t2(c1,c2,c3) VALUES (1,1,1);
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#
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# Check that a column is only updated once.
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#
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UPDATE t1
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SET c1 = 1,
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c1 = 2;
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ERROR HY000: The column `t1`.`c1` cannot be changed more than once in a single UPDATE statement
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UPDATE t1, t2
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SET t1.c1 = t1.c1 + 1,
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t1.c2 = t1.c1 + 1,
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t2.c2 = t1.c2 + 1,
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t2.c2 = t1.c2 + 1;
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ERROR HY000: The column `t2`.`c2` cannot be changed more than once in a single UPDATE statement
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#
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# Check standard update
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#
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UPDATE t1
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SET c1 = c1+1,
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c2 = c1+1,
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c3 = c2+1
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WHERE c1=10;
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START TRANSACTION;
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UPDATE t1
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SET c1 = c1+1,
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c2 = c1+1,
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c3 = c2+1;
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SELECT * FROM t1;
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c1 c2 c3
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2 2 2
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ROLLBACK;
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#
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# Check update through a single view
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#
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CREATE VIEW v1 (a, b) AS SELECT c1, c2 FROM t1;
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UPDATE v1
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SET a = 10,
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a = b+1;
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ERROR HY000: The column `t1`.`c1` cannot be changed more than once in a single UPDATE statement
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SELECT * FROM t1;
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c1 c2 c3
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1 1 1
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DROP VIEW v1;
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CREATE VIEW v1 (a, b) AS SELECT c2, c2 FROM t1;
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UPDATE v1
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SET a = 10,
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b = 20;
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ERROR HY000: The column `t1`.`c2` cannot be changed more than once in a single UPDATE statement
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SELECT * FROM t1;
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c1 c2 c3
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1 1 1
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DROP VIEW v1;
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#
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# Check update through a multi table view
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#
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CREATE VIEW v1 (a, b) AS SELECT t1.c1, t2.c1 FROM t1, t2 WHERE t1.c1=t2.c1;
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UPDATE v1
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SET a = 10,
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b = 20;
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ERROR HY000: Can not modify more than one base table through a join view 'test.v1'
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START TRANSACTION;
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UPDATE v1
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SET a = 10;
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ROLLBACK;
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UPDATE v1
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SET a = 10,
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a = a + 1;
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ERROR HY000: The column `t1`.`c1` cannot be changed more than once in a single UPDATE statement
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DROP VIEW v1;
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#
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# Check multi update
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#
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START TRANSACTION;
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UPDATE t1, t2
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SET t1.c1 = t1.c1 + 1,
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t1.c2 = t1.c1 + 1,
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t2.c2 = t1.c2 + 1,
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t2.c3 = t2.c2 + 1
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WHERE t1.c1=t2.c1;
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SELECT * FROM t1;
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c1 c2 c3
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2 2 1
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SELECT * FROM t2;
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c1 c2 c3
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1 2 2
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ROLLBACK;
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CREATE TRIGGER tr1 BEFORE UPDATE ON t1 FOR EACH ROW
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BEGIN
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INSERT INTO t2 VALUES(10+old.c1,10+old.c2,10+old.c3);
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INSERT INTO t2 VALUES(20+new.c1,10+new.c2,10+new.c3);
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END;
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/
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START TRANSACTION;
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UPDATE t1
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SET c1 = c1+1,
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c2 = c1+1,
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c3 = c2+1;
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SELECT * FROM t1;
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c1 c2 c3
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2 2 2
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SELECT * FROM t2;
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c1 c2 c3
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1 1 1
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11 11 11
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22 12 12
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ROLLBACK;
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DROP TABLE t1;
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DROP TABLE t2;
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#
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# Check update fired by INSERT ... ON DUPLICATE KEY UPDATE
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#
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CREATE TABLE t1 (
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id INT(11) NOT NULL AUTO_INCREMENT,
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name VARCHAR(60) NOT NULL,
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nb_visits INT NOT NULL,
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nb_visits_prev INT NOT NULL default 0,
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PRIMARY KEY (id),
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UNIQUE KEY name (name)
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) ENGINE=InnoDB AUTO_INCREMENT=1;
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INSERT INTO t1(name, nb_visits) VALUES('nico', 1)
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ON DUPLICATE KEY UPDATE nb_visits = nb_visits + 1;
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SELECT * FROM t1;
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id name nb_visits nb_visits_prev
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1 nico 1 0
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INSERT INTO t1(name, nb_visits) VALUES('nico', 1)
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ON DUPLICATE KEY UPDATE nb_visits = nb_visits + 1, nb_visits_prev=nb_visits;
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SELECT * FROM t1;
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id name nb_visits nb_visits_prev
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1 nico 2 1
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DROP TABLE t1;
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#
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# Update table with virtual column
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#
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CREATE TABLE t1 (c1 INTEGER, c2 INTEGER, c3 INTEGER AS (c1 MOD 10) VIRTUAL, c4 INTEGER AS (c1+c2 MOD 5) PERSISTENT ) ENGINE=InnoDb;
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INSERT INTO t1(c1,c2) VALUES (1,1);
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SELECT * FROM t1;
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c1 c2 c3 c4
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1 1 1 2
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UPDATE t1 SET c2 = 10, c1 = c2;
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SELECT * FROM t1;
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c1 c2 c3 c4
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1 10 1 1
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UPDATE t1 SET c2 = 4, c1 = c2;
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SELECT * FROM t1;
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c1 c2 c3 c4
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10 4 0 14
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DROP TABLE t1;
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#
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# Update dynamic column
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#
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SET @@local.character_set_connection='latin1';
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CREATE TABLE assets (
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item_name VARCHAR(32) PRIMARY KEY,
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dynamic_col1 BLOB,
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dynamic_col2 BLOB
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);
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INSERT INTO assets VALUES ('Thinkpad Laptop', COLUMN_CREATE('color', 'black', 'price', 500),COLUMN_CREATE('CPU', 'Core I7', 'memory', '8Go'));
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INSERT INTO assets VALUES ('Thinkpad Laptop2', COLUMN_CREATE('color', 'yellow', 'price', 700),COLUMN_CREATE('CPU', 'Core I7', 'memory', '16Go'));
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SELECT item_name, COLUMN_GET(dynamic_col1, 'color' as char) AS color1,
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COLUMN_GET(dynamic_col2, 'color' as char) AS color2
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FROM assets;
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item_name color1 color2
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Thinkpad Laptop black NULL
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Thinkpad Laptop2 yellow NULL
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UPDATE assets
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SET dynamic_col1=COLUMN_ADD(dynamic_col1, 'warranty', '3 years'),
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dynamic_col2=dynamic_col1
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WHERE item_name LIKE 'Thinkpad Laptop%';
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SELECT item_name, COLUMN_GET(dynamic_col1, 'warranty' as char) AS waranty1,
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COLUMN_GET(dynamic_col2, 'warranty' as char) AS waranty2,
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COLUMN_GET(dynamic_col2, 'color' as char) AS color2
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FROM assets;
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item_name waranty1 waranty2 color2
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Thinkpad Laptop 3 years NULL black
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Thinkpad Laptop2 3 years NULL yellow
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DROP TABLE assets;
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#
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# Update TEXT column
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#
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CREATE TABLE ft2(copy TEXT,copy2 TEXT,FULLTEXT(copy)) ENGINE=MyISAM;
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INSERT INTO ft2(copy) VALUES
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('MySQL vs MariaDB database'),
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('Oracle vs MariaDB database'),
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('PostgreSQL vs MariaDB database'),
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('MariaDB overview'),
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('Foreign keys'),
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('Primary keys'),
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('Indexes'),
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('Transactions'),
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('Triggers');
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SELECT * FROM ft2;
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copy copy2
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MySQL vs MariaDB database NULL
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Oracle vs MariaDB database NULL
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PostgreSQL vs MariaDB database NULL
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MariaDB overview NULL
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Foreign keys NULL
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Primary keys NULL
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Indexes NULL
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Transactions NULL
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Triggers NULL
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UPDATE ft2 SET copy = UPPER(copy),
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copy2= copy;
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SELECT * FROM ft2;
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copy copy2
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MYSQL VS MARIADB DATABASE MySQL vs MariaDB database
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ORACLE VS MARIADB DATABASE Oracle vs MariaDB database
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POSTGRESQL VS MARIADB DATABASE PostgreSQL vs MariaDB database
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MARIADB OVERVIEW MariaDB overview
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FOREIGN KEYS Foreign keys
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PRIMARY KEYS Primary keys
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INDEXES Indexes
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TRANSACTIONS Transactions
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TRIGGERS Triggers
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DROP TABLE ft2;
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#
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# MDEV-27769 Assertion failed in Field::ptr_in_record upon UPDATE
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# (duplicate) MDEV-35404 Assertion failed in Field::ptr_in_record
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#
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CREATE TABLE t (s geometry, t text);
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INSERT INTO t () VALUES ();
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UPDATE t SET t = '', s = 0;
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ERROR HY000: Cannot cast 'int' as 'geometry' in assignment of `test`.`t`.`s`
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UPDATE t SET t = '', s = 0;
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ERROR HY000: Cannot cast 'int' as 'geometry' in assignment of `test`.`t`.`s`
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ALTER TABLE t force;
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DROP TABLE t;
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