Manual:$wgDebugDumpSql

Debug: $wgDebugDumpSql
Dump SQL queries to debug output
Introduced in version:	Before 1.1.0
Removed in version:	Still in use
Allowed values:	(boolean)
Default value:	false
Other settings: Alphabetical | By function

Details

If enabled, all SQL statements are logged to the rdbms channel (Syslog/Monolog level DEBUG) and the Debugging toolbar (if also enabled). By default, the rdbms channel log messages go to debug log destination as specified by $wgDebugLogFile .

If $wgDebugComments is true, the Sql queries are dumped to the html output.

Notes

From MediaWiki 1.0 to 1.6 this setting was not defined in DefaultSettings.php , although it may still have been available for use within MediaWiki.