标签：联合索引
mysql 联合索引 输出排序问题
SELECT h.Index,h.PUID,h.ResIdx,h.Latitude,h.Longitude,h.Bearing,h.Speed, h.Altitude,h.State,h.MaxSpeed,h.MinSpeed,UNIX_TIMESTAMP(h.UTC) AS UTC,h.Timestamp FROM HistoryGPSData h ……
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SELECT h.Index,h.PUID,h.ResIdx,h.Latitude,h.Longitude,h.Bearing,h.Speed, h.Altitude,h.State,h.MaxSpeed,h.MinSpeed,UNIX_TIMESTAMP(h.UTC) AS UTC,h.Timestamp FROM HistoryGPSData h ……