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• log_slow_admin_statements 

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Include slow administrative statements in the statements written to the slow query log. Administrative statements include ALTER TABLE , ANALYZE TABLE , CHECK TABLE , CREATE INDEX , DROP INDEX , OPTIMIZE TABLE , and REPAIR TABLE . 

• log_slow_extra 

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If the slow query log is enabled and the output destination includes FILE , the server writes additional fields to log file lines that provide information about slow statements. See Section 5.4.5, “The Slow Query Log” . TABLE  output is unaffected. 

• log_syslog 

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Prior to MySQL 8.0, this variable controlled whether to perform error logging to the system log (the Event Log on Windows, and syslog  on Unix and Unix-like systems). 

In MySQL 8.0, the log_sink_syseventlog  log component implements error logging to the system log (see Section 5.4.2.8, “Error Logging to the System Log” ), so this type of logging can be enabled by 

