分组取出值最大的数据

时间 2020-05-25

标签分组取出最大数据繁體版

原文原文链接

1.要去某段时间内的数据，要求天天的数据只取id最大的一条ui

###查询去重取天天的id最大的数据##### SELECT highPressure, lowVoltage, pulse, ADDTIME, uid, DATE_FORMAT( uploadTime, '%Y-%m-%d' ) AS uploadTime, id FROM bloodpressure WHERE id IN ( SELECT
        max( id ) FROM bloodpressure WHERE highPressure IS NOT NULL 
        AND deleteStatus = 0 
        AND uid = 32854 
        AND DATE_FORMAT( uploadTime, '%Y-%m-%d' ) >= '2017-03-15' 
        AND DATE_FORMAT( uploadTime, '%Y-%m-%d' ) <= '2018-12-06' 
    GROUP BY DATE_FORMAT( uploadTime, '%Y-%m-%d' ) )

结果就得到想要的东西：spa