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https://dev.mysql.com/doc/refman/9.7/en/select-benchmarking.html
To measure the speed of a specific MySQL expression or function, invoke the BENCHMARK() function using the mysql client program. The return value is always zero, but mysql prints a line displaying approximately how long the statement took to ...
https://dev.mysql.com/doc/refman/9.7/en/server-logs.html
MySQL Server has several logs that can help you find out what activity is taking place. The following log-specific sections provide information about the server options that enable logging. By default, the server writes files for all enabled logs ...
https://dev.mysql.com/doc/refman/9.7/en/show-create-trigger.html
SHOW CREATE TRIGGER trigger_name This statement shows the CREATE TRIGGER statement that creates the named trigger. This statement requires the TRIGGER privilege for the table associated with the trigger. row *************************** Trigger: ...
https://dev.mysql.com/doc/refman/9.7/en/show-procedure-code.html
SHOW PROCEDURE CODE proc_name This statement is a MySQL extension that is available only for servers that have been built with debugging support. It displays a representation of the internal implementation of the named stored procedure. A similar ...
https://dev.mysql.com/doc/refman/9.7/en/show-tables.html
SHOW [EXTENDED] [FULL] TABLES [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW TABLES lists the non-TEMPORARY tables in a given database. You can also get this list using the mysqlshow db_name command. The LIKE clause, if present, indicates ...
https://dev.mysql.com/doc/refman/9.7/en/show-triggers.html
SHOW TRIGGERS [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW TRIGGERS lists the triggers currently defined for tables in a database (the default database unless a FROM clause is given). This statement returns results only for databases ...
https://dev.mysql.com/doc/refman/9.7/en/show-warnings.html
SHOW WARNINGS [LIMIT [offset,] row_count] SHOW COUNT(*) WARNINGS SHOW WARNINGS is a diagnostic statement that displays information about the conditions (errors, warnings, and notes) resulting from executing a statement in the current session.
https://dev.mysql.com/doc/refman/9.7/en/socket-pluggable-authentication.html
The server-side auth_socket authentication plugin authenticates clients that connect from the local host through the Unix socket file. The plugin uses the SO_PEERCRED socket option to obtain information about the user running the client program.
https://dev.mysql.com/doc/refman/9.7/en/sorted-index-builds.html
InnoDB performs a bulk load instead of inserting one index record at a time when creating or rebuilding indexes. This method of index creation is also known as a sorted index build. In the first phase, the clustered index is scanned, and index ...
https://dev.mysql.com/doc/refman/9.7/en/source-configuration-options.html
The CMake program provides a great deal of control over how you configure a MySQL source distribution. Typically, you do this using options on the CMake command line. For information about options supported by CMake, run either of these commands in ...