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Mysql求百分比

根据相应条件抽出相应count数(myCount)

抽出总count数(totalCount)

计算百分比:myCount / totalCount * 100

四舍五入:使用ROUND函数ROUND(number,要保留的小数位),ROUND(myCount / totalCount * 100,1)

下面给出示例供参考:

    SELECT ROUND(T1.co/T2.totalCo*100,1)
    FROM 
     (SELECT COUNT(*) AS co
        FROM fup1
       WHERE fup1.PERIOD6 = 1
       AND fup1.P6CCTCHK = 2) T1,
     (SELECT COUNT(*) AS totalCo
       FROM fup1
       WHERE fup1.PERIOD6 = 1)T2;

Mysql求百分比