Sql 复杂聚合视图如何

复杂聚合视图如何

我有一张表（

表a

），上面有

[付款类型]

、

[代理]、
[金额贷记]
和
[金额贷记]
。现在，我正在寻找该数据的特定视图

我想为每个代理人提供他/她的活动摘要

因此，沿x轴的代理和沿y轴的付款类型以及每个代理的总数

Transaction type      Agent 1   Agent 2 

Amount Credit                 

Cash                20   40
Credit Card         20   20 

Total               40   60

Amount Debit                

Cash                20   40
Credit Card         10   10 

Total               30   50 

尝试了所有操作，但仍无法获得此视图。
您可以通过应用
UNPIVOT
和
PIVOT
函数来获得所需的结果。如果要将已知数量的
agent
值转换为列，则可以对查询进行硬编码：

select 
  case when TransactionType is null then 'Total' else [Credit/Debit] end [Credit/Debit],
  case when TransactionType is null then '' else TransactionType end TransactionType,
  Sum([Agent 1]) Agent1, 
  sum([Agent 2]) Agent2
from
(
  select  [Agent], 
    [Credit/Debit], 
    PaymentType as TransactionType, 
    value
  from TableA
  unpivot
  (
    value
    for [Credit/Debit] in ([AmountCredit], [AmountDebit])
  ) unpiv
) src
pivot
(
  sum(value)
  for agent in ([Agent 1], [Agent 2])
) piv
group by GROUPING SETS ([Credit/Debit], TransactionType), ([Credit/Debit]);

看

如果代理的数量未知，则需要使用动态SQL，但不能在视图中使用动态SQL，必须将代码放在存储过程中。动态SQL将是：

DECLARE @cols AS NVARCHAR(MAX),
    @colSum AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX)

select @cols = STUFF((SELECT distinct ',' + QUOTENAME(Agent) 
                    from TableA
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

select @colSum = STUFF((SELECT distinct ', Sum(' + QUOTENAME(Agent)+') as ' +QUOTENAME(Agent)
                    from TableA
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

set @query = 'select 
                case when TransactionType is null then ''Total'' else [Credit/Debit] end [Credit/Debit],
                case when TransactionType is null then '''' else TransactionType end TransactionType,
                '+@colSum +'
              from
              (
                select  [Agent], 
                  [Credit/Debit], 
                  PaymentType as TransactionType, 
                  value
                from TableA
                unpivot
                (
                  value
                  for [Credit/Debit] in ([AmountCredit], [AmountDebit])
                ) unpiv
              ) src
              pivot
              (
                sum(value)
                for agent in ('+@cols+')
              ) piv
              group by GROUPING SETS ([Credit/Debit], TransactionType), ([Credit/Debit])'

execute(@query)

看。查询结果将是：

| CREDIT/DEBIT | TRANSACTIONTYPE | AGENT 1 | AGENT 2 |
------------------------------------------------------
| AmountCredit |            Cash |      20 |      40 |
| AmountCredit |     Credit Card |      20 |      20 |
|        Total |                 |      40 |      60 |
|  AmountDebit |            Cash |      20 |      40 |
|  AmountDebit |     Credit Card |      10 |      10 |
|        Total |                 |      30 |      50 |

通过应用
UNPIVOT
和
PIVOT
函数，您可以得到想要的结果。如果要将已知数量的
agent
值转换为列，则可以对查询进行硬编码：

select 
  case when TransactionType is null then 'Total' else [Credit/Debit] end [Credit/Debit],
  case when TransactionType is null then '' else TransactionType end TransactionType,
  Sum([Agent 1]) Agent1, 
  sum([Agent 2]) Agent2
from
(
  select  [Agent], 
    [Credit/Debit], 
    PaymentType as TransactionType, 
    value
  from TableA
  unpivot
  (
    value
    for [Credit/Debit] in ([AmountCredit], [AmountDebit])
  ) unpiv
) src
pivot
(
  sum(value)
  for agent in ([Agent 1], [Agent 2])
) piv
group by GROUPING SETS ([Credit/Debit], TransactionType), ([Credit/Debit]);

看

如果代理的数量未知，则需要使用动态SQL，但不能在视图中使用动态SQL，必须将代码放在存储过程中。动态SQL将是：

DECLARE @cols AS NVARCHAR(MAX),
    @colSum AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX)

select @cols = STUFF((SELECT distinct ',' + QUOTENAME(Agent) 
                    from TableA
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

select @colSum = STUFF((SELECT distinct ', Sum(' + QUOTENAME(Agent)+') as ' +QUOTENAME(Agent)
                    from TableA
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

set @query = 'select 
                case when TransactionType is null then ''Total'' else [Credit/Debit] end [Credit/Debit],
                case when TransactionType is null then '''' else TransactionType end TransactionType,
                '+@colSum +'
              from
              (
                select  [Agent], 
                  [Credit/Debit], 
                  PaymentType as TransactionType, 
                  value
                from TableA
                unpivot
                (
                  value
                  for [Credit/Debit] in ([AmountCredit], [AmountDebit])
                ) unpiv
              ) src
              pivot
              (
                sum(value)
                for agent in ('+@cols+')
              ) piv
              group by GROUPING SETS ([Credit/Debit], TransactionType), ([Credit/Debit])'

execute(@query)

看。查询结果将是：

| CREDIT/DEBIT | TRANSACTIONTYPE | AGENT 1 | AGENT 2 |
------------------------------------------------------
| AmountCredit |            Cash |      20 |      40 |
| AmountCredit |     Credit Card |      20 |      20 |
|        Total |                 |      40 |      60 |
|  AmountDebit |            Cash |      20 |      40 |
|  AmountDebit |     Credit Card |      10 |      10 |
|        Total |                 |      30 |      50 |

听起来你想做些什么：

听起来你想做些什么：

您可能希望发布您已经尝试过的内容。如果代理的数量随时间而变化，则无法将其作为视图写入。SQL不是电子表格系统。查询生成的列数（及其类型和名称）是固定的。您可能希望发布您已经尝试过的内容。如果代理数随时间变化，则无法将其作为视图写入。SQL不是电子表格系统。查询生成的列数（以及它们的类型和名称）是固定的。+1这是一个很好的答案-涵盖所有内容-几乎试图删除我的尝试+1这是一个很好的答案-涵盖了所有内容-几乎想删除我的尝试！