你好,我是坤哥这周收到一个sentry报警,如下SQL查询超时了。selectfromorderinfowhereuid5837661orderbyidasclimit1执行showcreatetableorderinfo发现这个表其实是有加索引的CREATETABLEorderinfo(idbigint(20)unsignedNOTNULLAUTOINCREMENT,uidint(11)unsigned,orderstatustinyint(3)DEFAULTNULL,...省略其它字段和索引PRIMARYKEY(id),KEYidxuidstat(uid,orderstatus),)ENGINEInnoDBDEFAULTCHARSETutf8理论上执行上述SQL会命...