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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 403 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=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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
|
