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https://dev.mysql.com/doc/refman/5.7/en/custom-benchmarks.html
Benchmark your application and database to find out where the bottlenecks are. After fixing one bottleneck (or by replacing it with a “dummy” module), you can proceed to identify the next bottleneck. Even if the overall performance for your ...
https://dev.mysql.com/doc/refman/5.7/en/data-masking.html
Note MySQL Enterprise Data Masking and De-Identification is an extension included in MySQL Enterprise Edition, a commercial product. As of MySQL 5.7.24, MySQL Enterprise Edition provides data masking and de-identification capabilities: ...
https://dev.mysql.com/doc/refman/5.7/en/dba-dtrace-server.html
Support for DTrace is deprecated in MySQL 5.7 and is removed in MySQL 8.0. The DTrace probes in the MySQL server are designed to provide information about the execution of queries within MySQL and the different areas of the system being utilized ...
https://dev.mysql.com/doc/refman/5.7/en/deallocate-prepare.html
{DEALLOCATE | DROP} PREPARE stmt_name To deallocate a prepared statement produced with PREPARE, use a DEALLOCATE PREPARE statement that refers to the prepared statement name. Attempting to execute a prepared statement after deallocating it results ...
https://dev.mysql.com/doc/refman/5.7/en/declare-handler.html
statement handler_action: { CONTINUE | EXIT | UNDO } condition_value: { mysql_error_code | SQLSTATE [VALUE] sqlstate_value | condition_name | SQLWARNING | NOT FOUND | SQLEXCEPTION } The DECLARE ... HANDLER statement specifies a handler that deals ...
https://dev.mysql.com/doc/refman/5.7/en/error-interfaces.html
$> ndb_perror 323 NDB error code 323: Invalid nodegroup id, nodegroup already existing: Permanent error: Application error . Error messages can originate on the server side or the client side, and each error message includes an error code, SQLSTATE ...
https://dev.mysql.com/doc/refman/5.7/en/error-log-windows.html
On Windows, mysqld uses the --log-error, --pid-file, and --console options to determine whether mysqld writes the error log to the console or a file, and, if to a file, the file name: If --console is given, mysqld writes the error log to the ...
https://dev.mysql.com/doc/refman/5.7/en/error-message-elements.html
This section discusses how error messages originate within MySQL and the elements they contain. Error Message Sources Error Message Elements Error Message Sources Error messages can originate on the server side or the client side: On the server ...
https://dev.mysql.com/doc/refman/5.7/en/events-status-info.html
The Event Scheduler writes information about event execution that terminates with an error or warning to the MySQL Server's error log. See Section 23.4.6, “The Event Scheduler and MySQL Privileges” for an example. For frequently executed ...
https://dev.mysql.com/doc/refman/5.7/en/extended-show.html
Some extensions to SHOW statements accompany the implementation of INFORMATION_SCHEMA: SHOW can be used to get information about the structure of INFORMATION_SCHEMA itself. Several SHOW statements accept a WHERE clause that provides more ...