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include/master-slave.inc
Warnings:
Note #### Sending passwords in plain text without SSL/TLS is extremely insecure.
Note #### Storing MySQL user name or password information in the connection metadata repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START REPLICA; see the 'START REPLICA Syntax' in the MySQL Manual for more information.
[connection master]
# Scenario 1:
# Create a small table, add some columns instantly
#
[connection master]
CREATE TABLE t1 (a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b INT);
INSERT INTO t1 VALUES(1, 1), (2, 2), (3, 3), (4, 4), (5, 5);
include/sync_slave_sql_with_master.inc
[connection master]
ALTER TABLE t1 ADD COLUMN c1 INT, ALGORITHM=INSTANT;
Table id did not change
count(*) = 1
1
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT name, default_value FROM information_schema.innodb_columns WHERE name = 'c1' AND has_default = 1;
name default_value
c1 NULL
INSERT INTO t1(a, c1) VALUES(6, 1);
SELECT count(*) = max(a) FROM t1 WHERE c1 IS NULL;
count(*) = max(a)
1
SELECT c1 FROM t1 WHERE c1 = 1;
c1
1
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL AUTO_INCREMENT,
`b` int DEFAULT NULL,
`c1` int DEFAULT NULL,
PRIMARY KEY (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
include/sync_slave_sql_with_master.inc
SELECT name, default_value FROM information_schema.innodb_columns WHERE name = 'c1' AND has_default = 1;
name default_value
c1 NULL
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL AUTO_INCREMENT,
`b` int DEFAULT NULL,
`c1` int DEFAULT NULL,
PRIMARY KEY (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
[connection master]
include/diff_tables.inc [master:test.t1,slave:test.t1]
# Table id not changed on slave
[connection master]
DROP TABLE t1;
include/sync_slave_sql_with_master.inc
# Scenario 2:
# Create a small table, add some virtual columns instantly
#
[connection master]
CREATE TABLE t1 (a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b INT);
INSERT INTO t1 VALUES(1, 1), (2, 2), (3, 3), (4, 4), (5, 5);
include/sync_slave_sql_with_master.inc
[connection master]
ALTER TABLE t1 ADD COLUMN c1 INT, ADD COLUMN c2 FLOAT GENERATED ALWAYS AS ((1.4 * 2.8)) VIRTUAL, ALGORITHM=INSTANT;
Table id did not change
count(*) = 1
1
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
INSERT INTO t1(a, c1) VALUES(6, 1);
SELECT * FROM t1;
a b c1 c2
1 1 NULL 3.92
2 2 NULL 3.92
3 3 NULL 3.92
4 4 NULL 3.92
5 5 NULL 3.92
6 NULL 1 3.92
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL AUTO_INCREMENT,
`b` int DEFAULT NULL,
`c1` int DEFAULT NULL,
`c2` float GENERATED ALWAYS AS ((1.4 * 2.8)) VIRTUAL,
PRIMARY KEY (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
include/sync_slave_sql_with_master.inc
SELECT name, default_value FROM information_schema.innodb_columns WHERE name = 'c1' AND has_default = 1;
name default_value
c1 NULL
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL AUTO_INCREMENT,
`b` int DEFAULT NULL,
`c1` int DEFAULT NULL,
`c2` float GENERATED ALWAYS AS ((1.4 * 2.8)) VIRTUAL,
PRIMARY KEY (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
[connection master]
include/diff_tables.inc [master:test.t1,slave:test.t1]
# Table id not changed on slave
[connection master]
DROP TABLE t1;
include/sync_slave_sql_with_master.inc
# Scenario 3:
# Create a small table with RANGE and HASH partition,
# and add INSTANT column
#
[connection master]
CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY, b INT)
PARTITION BY RANGE (a)
SUBPARTITION BY HASH (a)
SUBPARTITIONS 3 (
PARTITION p1 values less than (10),
PARTITION p2 values less than (20),
PARTITION p3 values less than maxvalue);
INSERT INTO t1 VALUES(1, 1), (2, 2), (11, 11), (12, 12), (21, 21), (22, 22), (26, 26), (27, 27);
include/sync_slave_sql_with_master.inc
[connection master]
INSERT INTO t1(a, b) VALUES(5, 5), (6, 6), (28, 28);
SELECT * FROM t1;
a b
6 6
1 1
2 2
5 5
12 12
11 11
21 21
27 27
22 22
28 28
26 26
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL,
`b` int DEFAULT NULL,
PRIMARY KEY (`a`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
/*!50100 PARTITION BY RANGE (`a`)
SUBPARTITION BY HASH (`a`)
SUBPARTITIONS 3
(PARTITION p1 VALUES LESS THAN (10) ENGINE = InnoDB,
PARTITION p2 VALUES LESS THAN (20) ENGINE = InnoDB,
PARTITION p3 VALUES LESS THAN MAXVALUE ENGINE = InnoDB) */
include/sync_slave_sql_with_master.inc
SELECT * FROM t1;
a b
6 6
1 1
2 2
5 5
12 12
11 11
21 21
27 27
22 22
28 28
26 26
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL,
`b` int DEFAULT NULL,
PRIMARY KEY (`a`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
/*!50100 PARTITION BY RANGE (`a`)
SUBPARTITION BY HASH (`a`)
SUBPARTITIONS 3
(PARTITION p1 VALUES LESS THAN (10) ENGINE = InnoDB,
PARTITION p2 VALUES LESS THAN (20) ENGINE = InnoDB,
PARTITION p3 VALUES LESS THAN MAXVALUE ENGINE = InnoDB) */
[connection master]
include/diff_tables.inc [master:test.t1,slave:test.t1]
# Table id not changed on slave
# Table id not changed on master
[connection master]
DROP TABLE t1;
include/sync_slave_sql_with_master.inc
# Scenario 4:
# Create a small table and add TIMESTAMP columns instantly
#
[connection master]
SET @start_session_value = @@session.explicit_defaults_for_timestamp;
SET @@session.explicit_defaults_for_timestamp=OFF;
Warnings:
Warning 1287 'explicit_defaults_for_timestamp' is deprecated and will be removed in a future release.
SELECT @@session.explicit_defaults_for_timestamp;
@@session.explicit_defaults_for_timestamp
0
CREATE TABLE t1 (a INT NOT NULL AUTO_INCREMENT PRIMARY KEY);
INSERT INTO t1 VALUES(1);
include/sync_slave_sql_with_master.inc
[connection master]
ALTER TABLE t1 ADD COLUMN c1 TIMESTAMP, ADD COLUMN c2 TIMESTAMP NULL, ADD COLUMN c3 TIMESTAMP DEFAULT CURRENT_TIMESTAMP, ALGORITHM=INSTANT;
Table id did not change
count(*) = 3
1
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
INSERT INTO t1 VALUES(2,NULL,NULL,NULL);
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL AUTO_INCREMENT,
`c1` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`c2` timestamp NULL DEFAULT NULL,
`c3` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SELECT * FROM t1;
a c1 c2 c3
1 # NULL #
2 # NULL #
include/sync_slave_sql_with_master.inc
SELECT * FROM t1;
a c1 c2 c3
1 # NULL #
2 # NULL #
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL AUTO_INCREMENT,
`c1` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`c2` timestamp NULL DEFAULT NULL,
`c3` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
[connection master]
include/diff_tables.inc [master:test.t1,slave:test.t1]
# Table id not changed on slave
DROP TABLE t1;
include/sync_slave_sql_with_master.inc
[connection master]
SET @@session.explicit_defaults_for_timestamp=ON;
SELECT @@session.explicit_defaults_for_timestamp;
@@session.explicit_defaults_for_timestamp
1
CREATE TABLE t1 (a INT NOT NULL AUTO_INCREMENT PRIMARY KEY);
INSERT INTO t1 VALUES(1);
include/sync_slave_sql_with_master.inc
[connection master]
ALTER TABLE t1 ADD COLUMN c1 TIMESTAMP, ADD COLUMN c2 TIMESTAMP NOT NULL, ADD COLUMN c3 TIMESTAMP DEFAULT CURRENT_TIMESTAMP, ALGORITHM=INSTANT;
Table id did not change
count(*) = 3
1
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
INSERT INTO t1 VALUES(2,NULL,'2001-01-01 00:00:00',NULL);
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL AUTO_INCREMENT,
`c1` timestamp NULL DEFAULT NULL,
`c2` timestamp NOT NULL,
`c3` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SELECT * FROM t1;
a c1 c2 c3
1 # 0000-00-00 00:00:00 #
2 # 2001-01-01 00:00:00 #
include/sync_slave_sql_with_master.inc
SELECT * FROM t1;
a c1 c2 c3
1 # 0000-00-00 00:00:00 #
2 # 2001-01-01 00:00:00 #
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int NOT NULL AUTO_INCREMENT,
`c1` timestamp NULL DEFAULT NULL,
`c2` timestamp NOT NULL,
`c3` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`a`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
[connection master]
include/diff_tables.inc [master:test.t1,slave:test.t1]
# Table id not changed on slave
DROP TABLE t1;
include/sync_slave_sql_with_master.inc
[connection master]
SET @@session.explicit_defaults_for_timestamp = @start_session_value;
SELECT @@session.explicit_defaults_for_timestamp;
@@session.explicit_defaults_for_timestamp
1
include/rpl_end.inc
|
