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https://dev.mysql.com/doc/refman/8.4/en/clone-plugin.html
Cloned data is a physical snapshot of data stored in InnoDB that includes schemas, tables, tablespaces, and data dictionary metadata. By default, a remote cloning operation removes existing user-created data (schemas, tables, tablespaces) and binary ... The clone plugin permits cloning data locally or from a remote MySQL server ...
https://dev.mysql.com/doc/refman/8.4/en/connection-compression-control.html
For source/replica replication connections, the configured compression algorithms and compression level are available from multiple sources: The Performance Schema replication_connection_configuration table has COMPRESSION_ALGORITHMS and ...
https://dev.mysql.com/doc/refman/8.4/en/connection-control-plugin.html
CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS implements an INFORMATION_SCHEMA table that exposes more detailed monitoring information for failed connection attempts. For more information about this table, see Section 28.6.2, “The INFORMATION_SCHEMA ...
https://dev.mysql.com/doc/refman/8.4/en/constraints.html
MySQL enables you to work both with transactional tables that permit rollback and with nontransactional tables that do not. We must handle the case when you have inserted or updated a lot of rows in a nontransactional table for which changes cannot ...Because of this, constraint handling is a bit different in MySQL than in other ...
https://dev.mysql.com/doc/refman/8.4/en/counting-rows.html
Counting the total number of animals you have is the same question as “How many rows are in the pet table?” because there is one record per pet. COUNT(*) counts the number of rows, so the query to count your animals looks like this: mysql> ...
https://dev.mysql.com/doc/refman/8.4/en/create-logfile-group.html
For example, you cannot have a tablespace and a log file group with the same name, or a tablespace and a data file with the same name. You can verify that the undo files were created and obtain information about them by querying the Information ...
https://dev.mysql.com/doc/refman/8.4/en/data-masking-component-function-reference.html
Table 8.46 MySQL Enterprise Data Masking and De-Identification Component Functions Name Description gen_blocklist() Perform dictionary term replacement gen_dictionary() Return random term from dictionary gen_range() Generate random number within ...
https://dev.mysql.com/doc/refman/8.4/en/date-and-time-literals.html
This section describes the acceptable formats for date and time literals. The following alternative formats are also understood: ss, mmss, or hhmmss. You can specify a time zone offset when inserting TIMESTAMP and DATETIME values into a table.
https://dev.mysql.com/doc/refman/8.4/en/debugging-server.html
This command also provides some useful information even if you have not compiled MySQL for debugging! If the problem is that some tables are getting slower and slower you should try to optimize the table with OPTIMIZE TABLE or myisamchk. If you are ...
https://dev.mysql.com/doc/refman/8.4/en/declare-handler.html
It can take the following forms: mysql_error_code: An integer literal indicating a MySQL error code, such as 1051 to specify “unknown table”: DECLARE CONTINUE HANDLER FOR 1051 BEGIN -- body of handler END; Do not use MySQL error code 0 because ...statement handler_action: { CONTINUE | EXIT | UNDO } condition_value: { mysql_error_code | SQLSTATE [VALUE] sqlstate_value | condition_name | SQLWARNING | NOT FOUND | SQLEXCEPTION } The DECLARE ...