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https://dev.mysql.com/doc/refman/8.0/en/resignal.html
RESIGNAL may change some or all information before passing it on. RESIGNAL is related to SIGNAL, but instead of originating a condition as SIGNAL does, RESIGNAL relays existing condition information, possibly after modifying it. RESIGNAL makes it ...
https://dev.mysql.com/doc/refman/8.0/en/roles.html
Like user accounts, roles can have privileges granted to and revoked from them. A user account can be granted roles, which grants to the account the privileges associated with each role. This enables assignment of sets of privileges to accounts and ...
https://dev.mysql.com/doc/refman/8.0/en/scheduler-component.html
Note The scheduler component is included in MySQL Enterprise Edition, a commercial product. As of MySQL 8.0.34, the scheduler component provides an implementation of the mysql_scheduler service that enables applications, components, or plugins to ...
https://dev.mysql.com/doc/refman/8.0/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/8.0/en/server-logs.html
MySQL Server has several logs that can help you find out what activity is taking place. (The DDL log is always created when required, and has no user-configurable options; see The DDL Log.) The following log-specific sections provide information ...
https://dev.mysql.com/doc/refman/8.0/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/8.0/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/8.0/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/8.0/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/8.0/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.