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早上好，我没有成功尝试使用 mysql/php 创建报告，我希望将行作为类似于 Access Crosstab 或 Excel Pivot 的列。我有销售人员和月度销售额，我想在页面上显示月份作为列标题。

我下面的查询输出数据，但每个销售人员每个月都有一行，读起来不太好，

      Jan | Feb | Mar | April

销售
1 销售
2 销售3 销售
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Select
  tblcontacts.ContactFullName,
  Count(tblcases.CaseID) As cases,
  MonthName(tblcases.CaseDate) As Monthly
From
  tblcases Inner Join
  tblcontacts On tblcases.ContactAssignedTo =
  tblcontacts.ContactID
Group By
  tblcontacts.ContactFullName,
  MonthName(tblcases.CaseDate)  
  with rollup

蚂蚁的建议或指针表示赞赏，我已经研究过，但大部分都在我的脑海中！

亲切的问候

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2 回答 2

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您可以做的只是按每个联系人分组，并使用条件聚合根据每个月计算行数：

SELECT
    a.ContactFullName,
    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 Dec
FROM
    tblcontacts a
INNER JOIN
    tblcases b ON a.ContactID = b.ContactAssignedTo
GROUP BY
    a.ContactFullName

编辑：根据您对此答案的评论：要获得每个月的价格总和，您可以执行以下操作：

SELECT
    a.ContactFullName,
    SUM(IF(MONTH(b.CaseDate) = 1, b.price, 0)) AS Jan,
    SUM(IF(MONTH(b.CaseDate) = 2, b.price, 0)) AS Feb,
    SUM(IF(MONTH(b.CaseDate) = 3, b.price, 0)) AS Mar,
    SUM(IF(MONTH(b.CaseDate) = 4, b.price, 0)) AS Apr,
    SUM(IF(MONTH(b.CaseDate) = 5, b.price, 0)) AS May,
    SUM(IF(MONTH(b.CaseDate) = 6, b.price, 0)) AS Jun,
    SUM(IF(MONTH(b.CaseDate) = 7, b.price, 0)) AS Jul,
    SUM(IF(MONTH(b.CaseDate) = 8, b.price, 0)) AS Aug,
    SUM(IF(MONTH(b.CaseDate) = 9, b.price, 0)) AS Sep,
    SUM(IF(MONTH(b.CaseDate) = 10, b.price, 0)) AS Oct,
    SUM(IF(MONTH(b.CaseDate) = 11, b.price, 0)) AS Nov,
    SUM(IF(MONTH(b.CaseDate) = 12, b.price, 0)) AS Dec
FROM
    tblcontacts a
INNER JOIN
    tblcases b ON a.ContactID = b.ContactAssignedTo
GROUP BY
    a.ContactFullName

基本上，对于每一行，如果 casedate 在特定月份，则将price列的值传递给SUM聚合，否则，只需传递它0。

于 2012-07-19T09:29:35.853 回答
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Select 
    tblcontacts.ContactFullName, 
    sum(case when MonthName(tblcases.CaseDate)='January' then 1 else 0 end) as January,
    sum(case when MonthName(tblcases.CaseDate)='February' then 1 else 0 end) as February,
    .
    .
    sum(case when MonthName(tblcases.CaseDate)='December' then 1 else 0 end) as December,
From 
  tblcases Inner Join 
  tblcontacts On tblcases.ContactAssignedTo = 
  tblcontacts.ContactID 
  Group By 
  tblcontacts.ContactFullName
于 2012-07-19T09:24:48.880 回答