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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' ...
https://dev.mysql.com/doc/refman/5.7/en/selinux-checking.html
SELinux is enabled by default on some Linux distributions including Oracle Linux, RHEL, CentOS, and Fedora.
https://dev.mysql.com/doc/refman/5.7/en/selinux-file-context.html
The MySQL Server reads from and writes to many files. If the SELinux context is not set correctly for these files, access to the files could be denied. The instructions that follow use the semanage binary to manage file context; on RHEL, it's part ...
https://dev.mysql.com/doc/refman/5.7/en/selinux-policies.html
MySQL Server SELinux policy modules are typically installed by default. MySQL Server SELinux policy modules include: mysqld_selinux mysqld_safe_selinux For information about MySQL Server SELinux policy modules, refer to the SELinux manual pages.