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https://dev.mysql.com/doc/refman/8.0/en/replication-rules-examples.html
If you use a combination of database-level and table-level replication filtering options, the replica first accepts or ignores events using the database options, then it evaluates all events permitted by those options according to the table options. It is also important to note that the results vary depending on whether the operation is logged using statement-based or row-based binary logging ...
https://dev.mysql.com/doc/refman/8.0/en/replication-threads.html
The source creates a thread to send the binary log contents to a replica when the replica connects. When a START REPLICA statement is issued on a replica server, the replica creates an I/O (receiver) thread, which connects to the source and asks it ... MySQL replication capabilities are implemented using the following types of threads: Binary log dump ...
https://dev.mysql.com/doc/refman/8.0/en/revoke.html
To use these REVOKE statements, you must have the global CREATE USER privilege, or the UPDATE privilege for the mysql system schema. (GRANT does not create such rows when lower_case_table_names is set, but such rows might have been created prior to ...[IGNORE UNKNOWN USER] REVOKE [IF EXISTS] ALL [PRIVILEGES], GRANT OPTION FROM user_or_role [, user_or_role] ...
https://dev.mysql.com/doc/refman/8.0/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/8.0/en/storage-engines.html
(The CREATE TABLE statement in MySQL 8.0 creates InnoDB tables by default.) MySQL Server uses a pluggable storage engine architecture that enables storage engines to be loaded into and unloaded from a running MySQL server. Federated: Offers the ...
https://dev.mysql.com/doc/refman/8.0/en/switchable-optimizations.html
Its value is a set of flags, each of which has a value of on or off to indicate whether the corresponding optimizer behavior is enabled or disabled. This variable has global and session values and can be changed at runtime. To see the current set of ...
https://dev.mysql.com/doc/refman/8.0/en/symbolic-links-to-tables.html
For InnoDB tables, use the alternative technique explained in Section 17.6.1.2, “Creating Tables Externally” instead. To instruct a running MySQL server to perform the symlinking, use the DATA DIRECTORY and INDEX DIRECTORY options to CREATE ...
https://dev.mysql.com/doc/refman/8.0/en/test-pluggable-authentication.html
MySQL includes a test plugin that checks account credentials and logs success or failure to the server error log. This is a loadable plugin (not built in) and must be installed prior to use. The test plugin source code is separate from the server ...
https://dev.mysql.com/doc/refman/8.0/en/validate-password.html
This applies to the ALTER USER, CREATE USER, and SET PASSWORD statements. For CREATE USER statements, validate_password requires that a password be given, and that it satisfies the password policy. Note For statements that assign or modify account ... The validate_password component serves to improve security by requiring account passwords and enabling strength testing of potential ...
https://dev.mysql.com/doc/refman/8.0/en/view-check-option.html
The WITH CHECK OPTION clause can be given for an updatable view to prevent inserts to rows for which the WHERE clause in the select_statement is not true. It also prevents updates to rows for which the WHERE clause is true but the update would ...