SHOW RELAYLOG EVENTS [IN 'log_name'] [FROMpos] [LIMIT [offset,]row_count]
        Shows the events in the relay log of a replication slave. If you
        do not specify
        ', the
        first relay log is displayed. This statement has no effect on
        the master.
      log_name'
        The LIMIT clause has the same syntax as for
        the SELECT statement. See
        Section 12.2.9, “SELECT Syntax”.
      
          Issuing a SHOW RELAYLOG EVENTS
          with no LIMIT clause could start a very
          time- and resource-consuming process because the server
          returns to the client the complete contents of the relay log
          (including all statements modifying data that have been
          received by the slave).
        
          Some events relating to the setting of user and system
          variables are not included in the output from
          SHOW RELAYLOG EVENTS. To get
          complete coverage of events within a relay log, use
          mysqlbinlog.