TSQL - 将两个虚拟表与左外部连接相结合

Question

我需要一些帮助。

我有一个名为@combine

下面表格是它的结果

我有表@monthofyear和绘制表格我想（见图片2） enter image description here

我想做一个查询，会给我这个DRAW表，所以我可以在SSRS中绘制图表

我红很多论坛说，我必须做表之间的LEFT OUTER JOIN来激活DRAW表。

这里是我的代码：

select ss.Phil 
    ,ss.amounttype 
    ,m.months 
    ,ss.allmount 
from @monthofyear as m 
left outer join (
    select c.phil 
     ,c.amounttype 
     ,c.month_name 
     ,sum(COALESCE(c.amount, 0)) as allmount 
    from @combine as c 
    group by phil 
     ,amounttype 
     ,month_name 
    ) ss on (m.months = ss.month_name) 
where ss.phil = 'F-14-0023' 
group by ss.phil 
    ,ss.amounttype 
    ,m.months 
    ,ss.allmount 

它不给我绘制表格布局。有人可以帮帮我吗？

电流输出：

Phil amounttype months allmount 
F-14-0023 ACTUAL February 594.46 
F-14-0023 ACTUAL January 7019.23 
F-14-0023 BUDGET April 1340.00 
F-14-0023 BUDGET December 282500.00 
F-14-0023 BUDGET February 1340.00 
F-14-0023 BUDGET January 1340.00 
F-14-0023 BUDGET July -282647.00 
F-14-0023 BUDGET March 1340.00 
F-14-0023 FORECAST March 1303.36 

所需的输出

Phil amounttype months allmount 
F-14-23 ACTUAL Feb 594.46 
F-14-23 ACTUAL Jan 7019.23 
F-14-23 ACTUAL Mar 0 
F-14-23 ACTUAL Apr 0 
F-14-23 ACTUAL May 0 
F-14-23 ACTUAL June 0 
F-14-23 ACTUAL July 0 
     (until December)  
F-14-23 BUDGET Apr 1340 
F-14-23 BUDGET Dec 282500 
F-14-23 BUDGET Feb 1340 
F-14-23 BUDGET Jan 1340 
F-14-23 BUDGET July -282647 
F-14-23 BUDGET Mar 1340 
F-14-23 BUDGET Jan 0 
F-14-23 BUDGET May 0 
F-14-23 BUDGET June 0 
     (all other months) 
F-14-23 FORECAST Mar 130.36 
     (all other months) 

**输出，ALAN代码****

Phil amounttype monthsname AllAmount 
Phil amounttype monthsname AllAmount 
    NULL NULL August 0 
    NULL NULL June 0 
    NULL NULL May 0 
    NULL NULL November 0 
    NULL NULL October 0 
    NULL NULL September 0 
    F-14-0023 BUDGET April 1340 
    F-14-0023 BUDGET December 282500 
    F-14-0023 BUDGET February 1340 
    F-14-0023 BUDGET January 1340 
    F-14-0023 BUDGET July -282647 
    F-14-0023 BUDGET March 1340 

代码在这里

Answer 1

现在你有一张表为month，但你也需要type每月

SELECT ss.Phil, 
     t.amounttype, 
     m.months, 
     ss.allmount 
FROM @monthofyear as m 
CROSS JOIN (SELECT DISTINCT amounttype -- CREATE ALL (month, type) 
      FROM @combine) as t 
LEFT JOIN (
    select 'F-14-0023' as phil, 
      c.amounttype, 
      c.month_name, 
      sum(COALESCE(c.amount, 0)) as allmount 
    from @combine as c 
    WHERE ss.phil = 'F-14-0023' 
    group by phil, 
      amounttype, 
      month_name 
    ) ss 
    ON m.months = ss.month_name 
    AND t.amounttype = ss.amounttype -- Match with the above (month, type) 

Answer 2

的问题是，您要加入两个表和然后结果过滤到什么地方ss.phil =“F-14-0023”。您需要在内部查询中移动WHERE子句。基于你原来的尝试，它会看起来像这样。

DECLARE @phil VARCHAR（30）= 'F-14-0023'

select @phil 
    , CASE WHEN ss.amounttype NOT NULL THEN ss.AmountType 
     ELSE 
     CASE WHEN month_number <= month(getdate()) THEN 'ACTUAL' 
     ELSE 'BUDGET' 
     END 
     END AS AmountType 
    ,m.months 
    ,ss.allmount 
from @monthofyear as m 
left outer join (
    select c.phil 
     ,c.amounttype 
     ,c.month_name 
     ,sum(COALESCE(c.amount, 0)) as allmount 
    from @combine as c 
    WHERE c.Phil = 'F-14-0023' 
    group by phil 
     ,amounttype 
     ,month_name 
    ) ss on (m.months = ss.month_name) 
group by ss.phil 
    ,ss.amounttype 
    ,m.months 
    ,ss.allmount 

现在我们正在做的是把你的表个什么，离开它加入到你的@Combine表后，我们已筛选结果。你可能需要做一些事情的NULL，你将在AllAmount和AmountType列得（如ISNULL（AllAmount，0）AS AllAmount）

UPDATE假设“F-14-0023”传递作为参数，只需使用它代替select中的ss.Phil字段（在第一行） amounttype列woudl必须是基于月份的CASE语句。您可能需要在@monthofyear表中添加一个month_number colume。如果它应该根据您的要求阅读预测，您可以扩展它来确定。我已经更新了上面的查询来说明。

代码中可能存在错误，因为我没有时间设置测试数据，但它应该足够接近以便遵循。