Question

我希望生成的表格与我提供的示例表格相似，即使提供的唯一月份是5，我希望表格显示所有12个月，即使其他月份的金额为0。

这是我正在使用的查询

Select Distinct T1.EmployeeID, T1.Name, T.MonthID, T1.TotalAmount, T1.TotalQuantity From 
(Select 
    S.EmployeeID,
    E.Name,
    YEAR(MAX([Date])) As [Year],
    MONTH(MAX([Date])) As [Montht],
    IsNull(SUM(Amount), 0) As TotalAmount,
    IsNull(SUM(Quantity), 0) As TotalQuantity
From Sales S Inner Join Employee E On E.EmployeeID = S.EmployeeID 
Group By 
    S.EmployeeID,
    E.Name,
    YEAR([Date]),
    MONTH([Date])) As T1 
    Inner Join
    (Select 'January' as Month , 1 as MonthID
    UNION select 'February' as Month , 2 as MonthID
    UNION select 'March' as Month , 3 as MonthID
    UNION select 'April' as Month , 4 as MonthID
    UNION select 'May' as Month , 5 as MonthID
    UNION select 'June' as Month , 6 as MonthID
    UNION select 'July' as Month , 7 as MonthID
    UNION select 'August' as Month , 8 as MonthID
    UNION select 'September' as Month , 9 as MonthID
    UNION select 'October' as Month , 10 as MonthID
    UNION select 'November' as Month , 11 as MonthID
    UNION select 'December' as Month , 12 as MonthID) As T 
    On T1.Montht <> T.MonthID
    Where T.MonthID Not In
(Select 
    MONTH(MAX([Date])) As [Montht]
    From Sales S Inner Join Employee E 
    On E.EmployeeID = S.EmployeeID And E.EmployeeID = 1  
    Group By S.EmployeeID,
    E.Name,
    YEAR([Date]), 
    MONTH([Date]))
Order By T1.Name

员工表（示例，不是完整表），

+--+--+------+
|ID|  Name   |
+--+---------+
|1 |John Doe |
+--+---------+
|2 |Jane Doe |
+--+---------+

销售表（示例，非全表），

+--+------+---------+-------+--------+
|ID|SaleID| Date    |Amount |Quantity|
+--+------+---------+-------+--------+
|1 |  1   |5-14-2014|300    |12      |
+--+------+---------+-------+--------+
|1 |  2   |5-16-2014|600    |4       |
+--+------+---------+-------+--------+
|2 |  3   |5-14-2014|452    |10      |
+--+------+---------+-------+--------+
|2 |  4   |5-16-2014|356    |2       |
+--+------+---------+-------+--------+

我得到了这个结果， http://i61.tinypic.com/xnumpz.png

该结果的问题是重复，并且这3个值（重复的那些）仅假设显示在4,5,6

上

像这样，

+-------+-----------+
|MonthID|TotalAmount|
+-------+-----------+
|4      |757.00     |
+-------+-----------+
|5      |834.00     |
+-------+-----------+
|6      |880.00     |
+-------+-----------+

虽然其他月份的值为0。

Answer 1

我最终使用了一个Pivot，它以一种华丽的方式解决了我的问题，这适用于任何有同样问题的人。

Declare @Year As Int
Set @Year = 2014

Select [Employee ID], Name, @Year As [Year],
IsNull(January, 0)  As January,  IsNull(February, 0)  As February,  IsNull(March, 0)      As March,
IsNull(April, 0)    As April,    IsNull(May, 0)       As May,       IsNull(June, 0)       As June,
IsNull(July, 0)     As July,     IsNull(August, 0)    As August,    IsNull(September, 0)  As September,
IsNull(October, 0)  As October,  IsNull(November, 0)  As November,  IsNull(December, 0)   As December
From 
(Select 
    S.EmployeeID As [Employee ID],
    E.Name,
    YEAR([Date]) As [Year],
    DATENAME(MONTH, [Date]) As [Month], 
    IsNull(SUM(Amount), 0) As TotalAmount
    From Sales S Left Outer Join Employee E
    On S.EmployeeID = E.EmployeeID
    Group By 
    S.EmployeeID,
    E.Name, 
    YEAR([Date]),
    DATENAME(MONTH, [Date])) As MonthlySale
Pivot(SUM(TotalAmount)   
    For Month In ([January], [February], [March],
                  [April],   [May],      [June],
                  [July],    [August],   [September],
                  [October], [November], [December])) As MyPivot

SQL Server重复和正确分配连接

1 个答案: