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MySQL replication: temporarily prevent specific SQL statements replicating to the slaves?
To achieve this, you need to set sql_log_bin to 0. To understand the concept, let us create a table. The query to create a table is as follows
mysql> create table SQLStatementsDemo -> ( -> UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> UserName varchar(20) -> ); Query OK, 0 rows affected (0.79 sec)
Insert some records in the table using insert command. The query is as follows −
mysql> insert into SQLStatementsDemo(UserName) values('John');
Query OK, 1 row affected (0.18 sec)
mysql> insert into SQLStatementsDemo(UserName) values('Carol');
Query OK, 1 row affected (0.14 sec)
mysql> insert into SQLStatementsDemo(UserName) values('Bob');
Query OK, 1 row affected (0.14 sec)
mysql> insert into SQLStatementsDemo(UserName) values('Mike');
Query OK, 1 row affected (0.14 sec)
mysql> insert into SQLStatementsDemo(UserName) values('Sam');
Query OK, 1 row affected (0.14 sec)
mysql> insert into SQLStatementsDemo(UserName) values('David');
Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement. The query is as follows −
mysql> select *from SQLStatementsDemo;
The following is the output
+--------+----------+ | UserId | UserName | +--------+----------+ | 1 | John | | 2 | Carol | | 3 | Bob | | 4 | Mike | | 5 | Sam | | 6 | David | +--------+----------+ 6 rows in set (0.00 sec)
Here are the queries implementing MySQL replication for SQL statements
mysql> SET sql_log_bin=0;
Query OK, 0 rows affected (0.00 sec)
mysql> update SQLStatementsDemo set UserName='Maxwell' where UserId=6;
Query OK, 1 row affected (0.05 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select *from SQLStatementsDemo;
+--------+----------+
| UserId | UserName |
+--------+----------+
| 1 | John |
| 2 | Carol |
| 3 | Bob |
| 4 | Mike |
| 5 | Sam |
| 6 | Maxwell |
+--------+----------+
6 rows in set (0.00 sec)
mysql> insert into SQLStatementsDemo(UserName) values('Chris');
Query OK, 1 row affected (0.16 sec)
mysql> select *from SQLStatementsDemo;
+--------+----------+
| UserId | UserName |
+--------+----------+
| 1 | John |
| 2 | Carol |
| 3 | Bob |
| 4 | Mike |
| 5 | Sam |
| 6 | Maxwell |
| 7 | Chris |
+--------+----------+
7 rows in set (0.00 sec)
mysql> delete from SQLStatementsDemo where UserId=7;
Query OK, 1 row affected (0.10 sec)
mysql> SET sql_log_bin=1 ;
Query OK, 0 rows affected (0.00 sec)
Updated on: 30-Jul-2019
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