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https://dev.mysql.com/doc/refman/5.7/en/replication-mode-change-online-enable-gtids.html
This section describes how to enable GTID transactions, and optionally auto-positioning, on servers that are already online and using anonymous transactions. This procedure does not require taking the server offline and is suited to use in ...
https://dev.mysql.com/doc/refman/5.7/en/replication-rbr-safe-unsafe.html
The “safeness” of a statement in MySQL Replication, refers to whether the statement and its effects can be replicated correctly using statement-based format. If this is true of the statement, we refer to the statement as safe; otherwise, we ...
https://dev.mysql.com/doc/refman/5.7/en/replication-solutions-backups.html
To use replication as a backup solution, replicate data from the source to a replica, and then back up the replica. The replica can be paused and shut down without affecting the running operation of the source, so you can produce an effective ...
https://dev.mysql.com/doc/refman/5.7/en/replication-solutions.html
Replication can be used in many different environments for a range of purposes. This section provides general notes and advice on using replication for specific solution types. For information on using replication in a backup environment, including ...
https://dev.mysql.com/doc/refman/5.7/en/reset.html
reset_option: { MASTER | QUERY CACHE | SLAVE } The RESET statement is used to clear the state of various server operations. The following list describes the permitted RESET statement reset_option values: RESET MASTER Deletes all binary logs listed ...
https://dev.mysql.com/doc/refman/5.7/en/rewriting-subqueries.html
Sometimes there are other ways to test membership in a set of values than by using a subquery. Also, on some occasions, it is not only possible to rewrite a query without a subquery, but it can be more efficient to make use of some of these ...
https://dev.mysql.com/doc/refman/5.7/en/savepoint.html
SAVEPOINT identifier ROLLBACK [WORK] TO [SAVEPOINT] identifier RELEASE SAVEPOINT identifier InnoDB supports the SQL statements SAVEPOINT, ROLLBACK TO SAVEPOINT, RELEASE SAVEPOINT and the optional WORK keyword for ROLLBACK. The SAVEPOINT statement ...
https://dev.mysql.com/doc/refman/5.7/en/scalar-subqueries.html
In its simplest form, a subquery is a scalar subquery that returns a single value. A scalar subquery is a simple operand, and you can use it almost anywhere a single column value or literal is legal, and you can expect it to have those ...
https://dev.mysql.com/doc/refman/5.7/en/se-csv-repair.html
The CSV storage engine supports the CHECK TABLE and REPAIR TABLE statements to verify and, if possible, repair a damaged CSV table. When running the CHECK TABLE statement, the CSV file is checked for validity by looking for the correct field ...
https://dev.mysql.com/doc/refman/5.7/en/searching-on-two-keys.html
An OR using a single key is well optimized, as is the handling of AND. The one tricky case is that of searching on two different keys combined with OR: SELECT field1_index, field2_index FROM test_table WHERE field1_index = '1' OR field2_index = '1' ...