FEI441544558的专栏

现象mysql>select * from sys.host_summary;ERROR 1356 (HY000): View 'sys.host_summary' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them操作想着把sys库删除了，然后用很早之前的备份恢复下sys库下。mysql>set sql_log_