include/master-slave.inc
[connection master]
connection master;
CREATE PROCEDURE populate_t1(load_even INT)
BEGIN
DECLARE i int DEFAULT 1;
START TRANSACTION;
WHILE (i <= 100) DO
IF i%2 = 0 AND load_even = 1 THEN
INSERT INTO t1 VALUES (i, i, CONCAT('a', i));
END IF;
IF i%2 != 0 AND load_even != 1 THEN
INSERT INTO t1 VALUES (i, i, CONCAT('a', i));
END IF;
SET i = i + 1;
END WHILE;
COMMIT;
END|
CREATE TABLE t1(
class	INT,
id	INT,
title	VARCHAR(100)
) ENGINE=InnoDB ;
SELECT COUNT(*) FROM t1;
COUNT(*)
50
/* Create index. */
CREATE INDEX idx_id ON t1(id);
CREATE INDEX idx_title ON t1(title);
/* Select by index. */
EXPLAIN SELECT * FROM t1 WHERE id = 10;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	idx_id	idx_id	5	const	1	
EXPLAIN SELECT * FROM t1 WHERE title = 'a10';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	idx_title	idx_title	103	const	1	Using index condition
SELECT * FROM t1 WHERE id = 10;
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE id = 20;
class	id	title
20	20	a20
SELECT * FROM t1 WHERE title = 'a20';
class	id	title
20	20	a20
SELECT * FROM t1 WHERE id = 30;
class	id	title
30	30	a30
SELECT * FROM t1 WHERE title = 'a30';
class	id	title
30	30	a30
SELECT * FROM t1 WHERE id = 101;
class	id	title
SELECT * FROM t1 WHERE title = 'a101';
class	id	title
/*Insert/Update/Delete. */
DELETE FROM t1 WHERE id < 40 AND id > 30;
INSERT INTO t1 VALUES(38, 38, 'b38');
UPDATE t1 SET title = CONCAT('b', id) WHERE id < 30 AND id > 20;
SELECT * FROM t1 WHERE id = 28;
class	id	title
28	28	b28
SELECT * FROM t1 WHERE title = 'a28';
class	id	title
SELECT * FROM t1 WHERE title = 'b28';
class	id	title
28	28	b28
SELECT * FROM t1 WHERE id = 38;
class	id	title
38	38	b38
SELECT * FROM t1 WHERE title = 'a38';
class	id	title
SELECT * FROM t1 WHERE title = 'b38';
class	id	title
38	38	b38
SELECT * FROM t1 WHERE id = 101;
class	id	title
SELECT * FROM t1 WHERE title = 'a101';
class	id	title
SELECT COUNT(*) FROM t1;
COUNT(*)
97
SELECT * FROM t1 WHERE id = 10;
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE id = 20;
class	id	title
20	20	a20
SELECT * FROM t1 WHERE title = 'a20';
class	id	title
20	20	a20
SELECT * FROM t1 WHERE id = 30;
class	id	title
30	30	a30
SELECT * FROM t1 WHERE title = 'a30';
class	id	title
30	30	a30
SELECT * FROM t1 WHERE id = 101;
class	id	title
SELECT * FROM t1 WHERE title = 'a101';
class	id	title
CREATE TABLE t_part (
class INT ,
id INT ,
title VARCHAR(30)
) ENGINE=InnoDB
PARTITION BY RANGE(id)
SUBPARTITION BY KEY(id)
SUBPARTITIONS 4
(
PARTITION p0 VALUES LESS THAN (5000),
PARTITION p1 VALUES LESS THAN (MAXVALUE)
);
INSERT INTO t_part SELECT * FROM t1;
ALTER TABLE t_part ADD INDEX `idx` (class,id,title(10));
SELECT * FROM t_part WHERE id = 10;
class	id	title
10	10	a10
SELECT * FROM t_part WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t_part WHERE id = 20;
class	id	title
20	20	a20
SELECT * FROM t_part WHERE title = 'a20';
class	id	title
20	20	a20
SELECT * FROM t_part WHERE id = 30;
class	id	title
30	30	a30
SELECT * FROM t_part WHERE title = 'a30';
class	id	title
30	30	a30
SELECT * FROM t_part WHERE id = 101;
class	id	title
SELECT * FROM t_part WHERE title = 'a101';
class	id	title
include/sync_slave_sql_with_master.inc
connection slave;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `class` int(11) DEFAULT NULL,
  `id` int(11) DEFAULT NULL,
  `title` varchar(100) DEFAULT NULL,
  KEY `idx_id` (`id`),
  KEY `idx_title` (`title`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SHOW CREATE TABLE t_part;
Table	Create Table
t_part	CREATE TABLE `t_part` (
  `class` int(11) DEFAULT NULL,
  `id` int(11) DEFAULT NULL,
  `title` varchar(30) DEFAULT NULL,
  KEY `idx` (`class`,`id`,`title`(10))
) ENGINE=InnoDB DEFAULT CHARSET=latin1
 PARTITION BY RANGE (`id`)
SUBPARTITION BY KEY (`id`)
SUBPARTITIONS 4
(PARTITION `p0` VALUES LESS THAN (5000) ENGINE = InnoDB,
 PARTITION `p1` VALUES LESS THAN MAXVALUE ENGINE = InnoDB)
SELECT COUNT(*) FROM t1;
COUNT(*)
97
SELECT COUNT(*) FROM t_part;
COUNT(*)
97
SELECT * FROM t1 WHERE id = 10;
class	id	title
10	10	a10
SELECT * FROM t1 WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t1 WHERE id = 20;
class	id	title
20	20	a20
SELECT * FROM t1 WHERE title = 'a20';
class	id	title
20	20	a20
SELECT * FROM t1 WHERE id = 30;
class	id	title
30	30	a30
SELECT * FROM t1 WHERE title = 'a30';
class	id	title
30	30	a30
SELECT * FROM t1 WHERE id = 101;
class	id	title
SELECT * FROM t1 WHERE title = 'a101';
class	id	title
SELECT * FROM t_part WHERE id = 10;
class	id	title
10	10	a10
SELECT * FROM t_part WHERE title = 'a10';
class	id	title
10	10	a10
SELECT * FROM t_part WHERE id = 20;
class	id	title
20	20	a20
SELECT * FROM t_part WHERE title = 'a20';
class	id	title
20	20	a20
SELECT * FROM t_part WHERE id = 30;
class	id	title
30	30	a30
SELECT * FROM t_part WHERE title = 'a30';
class	id	title
30	30	a30
SELECT * FROM t_part WHERE id = 101;
class	id	title
SELECT * FROM t_part WHERE title = 'a101';
class	id	title
connection master;
DROP PROCEDURE populate_t1;
DROP TABLE t1;
DROP TABLE t_part;
include/rpl_end.inc