Question

这个问题让我现在围着圈子走了一圈，我想知道是否有人可以指出我哪里出错了。

我试图生成一个SPROC，它生成一个数据集，由SSRS调用过去6个月的图表。

出于示例目的的数据使用了三个表（更多但不会改变手头的问题），如下所示：

tbl_ReportList：

Report      Site
----------------
North       abc
North       def
East        bbb
East        ccc
East        ddd
South       poa
South       pob
South       poc
South       pod
West        xyz

tbl_TicketsRaisedThisMonth：

Date                     Site     Type      NoOfTickets
---------------------------------------------------------
2010-07-01 00:00:00.000 abc      Support        101
2010-07-01 00:00:00.000 abc      Complaint       21
2010-07-01 00:00:00.000 def      Support          6
...
2010-12-01 00:00:00.000 abc      Support         93
2010-12-01 00:00:00.000 xyz      Support          5

tbl_FeedBackRequests：

Date                       Site  NoOfFeedBackR
----------------------------------------------------------------
2010-07-01 00:00:00.000 abc           101
2010-07-01 00:00:00.000 def            11
...
2010-12-01 00:00:00.000 abc            63
2010-12-01 00:00:00.000 xyz             4

我正在使用CTE来简化代码，如下所示：

DECLARE @ReportName VarChar(200)
SET @ReportName = 'North';

WITH TicketsRaisedThisMonth AS
(
    SELECT
            [Date],
            Site,
            SUM(NoOfTickets) AS NoOfTickets
    FROM    tbl_TicketsRaisedThisMonth
    WHERE [Date] >= DATEADD(mm, DATEDIFF(m,0,GETDATE())-6,0)
    GROUP BY [Date], Site
),

FeedBackRequests AS
(
    SELECT
            [Date],
            Site,
            SUM(NoOfFeedBackR) AS NoOfFeedBackR
    FROM    tbl_FeedBackRequests
    WHERE [Date] >= DATEADD(mm, DATEDIFF(m,0,GETDATE())-6,0)
    GROUP BY [Date], Site
),

SELECT
    trtm.[Date]
    SUM(trtm.NoOfTickets) AS NoOfTickets,
    SUM(fbr.NoOfFeedBackR) AS NoOfFeedBackR,

FROM tbl_ReportList rpts

LEFT OUTER JOIN TotalIncidentsDuringMonth trtm ON rpts.Site = trtm.Site
LEFT OUTER JOIN LoggedComplaints fbr ON rpts.Site = fbr.Site

WHERE rpts.report = @ReportName
GROUP BY trtm.[Date]

当sproc传递一个参数如'North'时的输出如下：

Date                       NoOfTickets             NoOfFeedBackR
-----------------------------------------------------------------------------------
2010-07-01 00:00:00.000             128                              112
2010-08-01 00:00:00.000     <data for that month>       <data for that month>
2010-09-01 00:00:00.000     <data for that month>       <data for that month>
2010-10-01 00:00:00.000     <data for that month>       <data for that month>
2010-11-01 00:00:00.000     <data for that month>       <data for that month>
2010-12-01 00:00:00.000             122                              63

我遇到的问题是，当我执行查询时，我会给出每个月重复的值列表，例如128将重复6次，然后是下一个月值的另一个值重复6次，等等。哎呀！

Answer 1

您需要更改返回月份的方式。在结果集中，您将返回trtm。[Date]，但是左键连接到trtm，因此可能不存在。
如果始终存在，则将其转换为INNER JOIN并更改另一个LEFT JOIN以包含来自trtm的链接。[Date]至fbr。[Date]。
否则，您需要一个'月'表来返回月份列表，并从日期字段（以及网站上现有的连接）中将其从该连接添加到trtm和fbr

CTE加入查询问题

1 个答案: