Bug #119122 for DBD-mysql: RFE: Support for tracking session information

Hello, In MySQL 5.7 it is possible to enable tracking of certain session attributes. These are the global variables which control that: session_track_gtids session_track_schema session_track_state_change session_track_system_variables From the MySQL C API these can be used to get access to the data: mysql_session_track_get_first() mysql_session_track_get_next() The main use case I see is to insert a record on a master and then get the GTID back which then can be used with WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS() on the replica to ensure the row did replicate to the replica. The other way of doing this would be to @@global.gtid_executed, but that needs an extra roundtrip. So it would be nice if DBD::mysql would expose the session tracking data. https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html https://dev.mysql.com/doc/refman/5.7/en/mysql-session-track-get-first.html https://dev.mysql.com/doc/refman/5.7/en/mysql-session-track-get-next.html https://dev.mysql.com/doc/refman/5.7/en/gtid-functions.html#function_wait-until-sql-thread-after-gtids Daniël