SQL獲取最新一筆數據的兩個查詢方法

//取每一個站點的最新一筆預警信息方法一 select RCreateTime, stcd,SForecastTime,RQ,RQTime from ( select RCreateTime, stcd,SForecastTime,RQ,RQTime, ROW_NUMBER() over(partition by stcd order by RCreateTime desc) as tm_ind

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