来自2个表的Sum Column Totals

Question

我正在研究SQL查询/视图，我需要在每个表中对列的值求和。

所以，我有父表：LIMIT 限制有许多分配和许多扩展。 每个分配和每个扩展都有一个源实体。

分配和扩展表都有列：AR和MTM。

我需要在Allocation和Extention表中将SUM AR和MTM分成一列ARTotal和MTM Total。我需要为每个SourceEntity执行此操作。当我指定Limit OID和Source Entity OID时，我得到给定LIMIT和Source Entity的正确结果。但是，我需要获取所有Source entites，并且所有Limits Here是返回特定实体和限制的正确结果的代码：

   SELECT MAX(la.SourceEntity) as Source,
   MAX(la.limit)as Limit,
   SUM(la.ARLimit) as LAARLimit,
   SUM(la.MTMLimit) as LAMTMLimit,

   MAX(la.SourceEntity) as Source,
   SUM(le.ARLimit) as LEARLimit,
   SUM(le.MTMLimit) as LEMTMLimit,

   (Sum(la.ARLimit) + SUM(le.ARLimit)) as ARLimitTotal

    FROM  LimitAllocation la 
    INNER JOIN LimitExtension le
    on la.Limit = le.Limit

    where la.Limit = le.Limit 
    and la.SourceEntity = 'XXXXXXXXXX-4D0C-460B-8E2C-1F32732A1A20'
    and la.Limit = 'XXXXXXXXX-19f1-4a0f-81db-9598c0f58ea7'

此结果集返回给定源实体和给定限制的1记录。价值是正确的。

如何在分配和扩展表中获得每个源实体的结果，它们共享相同的LIMIT OID？

Answer 1

试试这个并告诉我这是否是你要找的。

SELECT la.SourceEntity as Source,
   MAX(la.limit)as Limit,
   SUM(la.ARLimit) as LAARLimit,
   SUM(la.MTMLimit) as LAMTMLimit,

   la.SourceEntity as Source,
   SUM(le.ARLimit) as LEARLimit,
   SUM(le.MTMLimit) as LEMTMLimit,

   (Sum(la.ARLimit) + SUM(le.ARLimit)) as ARLimitTotal

    FROM  LimitAllocation la 
    INNER JOIN LimitExtension le
    on la.Limit = le.Limit

    where la.Limit = le.Limit 
   -- and la.SourceEntity = 'XXXXXXXXXX-4D0C-460B-8E2C-1F32732A1A20'
   -- and la.Limit = 'XXXXXXXXX-19f1-4a0f-81db-9598c0f58ea7'

GROUP BY la.SourceEntity