文档解释Errornumber:MY-013939;Symbol:ER_RES_GRP_SWITCH_FAILED_COULD_NOT_ACQUIRE_LOCK;SQLSTATE:HY000Message:Failedtoswitchresourcegroup.Couldnotacquirelockonresource...

文档解释Errornumber:3939;Symbol:ER_MULTIPLE_CONSTRAINTS_WITH_SAME_NAME;SQLSTATE:HY000Message:Tablehasmultipleconstraintswiththename‘%s’.Pleaseuseconstra...