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想知道是否有人可以指出我下面代码中的错误。我有 mysql 查询，按月显示销售线索，然后计算转化为销售额的百分比。如果我在其中添加 where 子句，它会破坏总列，因为它的输出与 Comms 列相同？

  Select
  q.*,
  ROUND(100 * Comms / Total, 2) As Conversion,
  If(q.Adviser Is Null, 1, 0) As remove
From
  (Select
      a.ContactFullName As Adviser,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 1) AS Jan,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 2) As Feb,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 3) As Mar,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 4) As Apr,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 5) As May,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 6) As Jun,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 7) As Jul,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 8) As Aug,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 9) As Sep,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 10) As Oct,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 11) As Nov,
      SUM(YEAR(b.CaseDate) = 2013 AND Month(b.CaseDate) = 12) As Dece,
      Count(b.CaseID) As Total,
      Sum(Case When Year(b.StatusSubmittedDate) = 2013 Then 1 Else 0
      End) As Comms

    From
      tblcontacts a Inner Join

如果没有 WHERE 子句，它会输出；

Total - Comms - Conversion
479   -  148  - 30.9%

使用 WHERE 子句输出；

Total - Comms - Conversion
148   -  148  - 100%

我无法弄清楚为什么会发生这种情况？

亲切的问候

4

1 回答 1

1

更新：

我重写了你的整个查询：

Select
  q.*,
  totals.total,
  ROUND(100 * Comms / totals.total, 2) As Conversion
  If(q.Adviser Is Null, 1, 0) As remove
From
  (Select
      a.ContactFullName As Adviser,
      Sum(Month(b.CaseDate) = 1) As Jan,
      Sum(Month(b.CaseDate) = 2) As Feb,
      Sum(Month(b.CaseDate) = 3) As Mar,
      Sum(Month(b.CaseDate) = 4) As Apr,
      Sum(Month(b.CaseDate) = 5) As May,
      Sum(Month(b.CaseDate) = 6) As Jun,
      Sum(Month(b.CaseDate) = 7) As Jul,
      Sum(Month(b.CaseDate) = 8) As Aug,
      Sum(Month(b.CaseDate) = 9) As Sep,
      Sum(Month(b.CaseDate) = 10) As Oct,
      Sum(Month(b.CaseDate) = 11) As Nov,
      Sum(Month(b.CaseDate) = 12) As Dece,
      Count(b.StatusSubmittedDate) As Comms

    From
      tblcontacts a Inner Join
      tblcases b On a.ContactID = b.ContactAssignedTo 
      WHERE Year(b.StatusSubmittedDate) = 2013
    Group By
      a.ContactFullName With Rollup) q
    inner join (select  a.ContactFullName As Adviser, count(*) as total from
    tblcontacts a Inner Join
      tblcases b On a.ContactID = b.ContactAssignedTo 
      WHERE Year(b.StatusSubmittedDate) = 2013
      group by Adviser
      )totals on q.Adviser = totals.Adviser

原答案：

要拥有多个 COUNTS，您可以像这样解决问题：

      Count(b.CaseID) As Total,
      SUM(CASE WHEN YEAR(b.StatusSubmittedDate) = 2013 THEN 1 ELSE 0 END) As Comms,

但是这个：

      ROUND(100 * Count(b.StatusSubmittedDate) / Count(b.CaseID),

不会工作，因为这个计算必须稍后完成。

Select
  q.*,
  ROUND(100 * Comms / Total, 2) As Conversion,
  If(q.Adviser Is Null, 1, 0) As remove
From
  (Select
      a.ContactFullName As Adviser,
      Sum(Month(b.CaseDate) = 1 and year(b.CaseDate) = 2012) As Jan,
      ... Dec,
      Count(b.CaseID) As Total,
      SUM(CASE WHEN YEAR(b.StatusSubmittedDate) = 2013 THEN 1 ELSE 0 END) As Comms
    From
      tblcontacts a Inner Join
      tblcases b On a.ContactID = b.ContactAssignedTo 
    Group By
      a.ContactFullName With Rollup) q
于 2013-01-21T11:02:10.733 回答