Question

我有一个贷款记录可能有5个余额字段。我需要总计这些字段，同时排除包含特定代码的每个贷款记录的列。

以下是数据记录的示例，每个总字段都有相应的代码。我想总结所有总数并排除＆＃34; X＆＃34;代码总数。代码＆＃34; X＆＃34;可以附加到任何总列，在这种情况下它恰好在最后。

loan number | total 1 | total 2  | total 3 | total 4 |total 5 | code1 | code2 | code3 | code4 | code5
  123456789 |   12.50 | 1,950.43 |  750.00 |         | 275.98 | A     | B     | C     |       | X

这是现有TSQL查询中的子查询：

, (SELECT [CMI ACCOUNT],
   [Unapplied Funds 1 - Balance] = SUM (CASE WHEN [UNAPPLIED code 1] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 1], 0) end 
        + CASE WHEN [UNAPPLIED code 2] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 2], 0) end 
        + CASE WHEN [UNAPPLIED code 3] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 3], 0) end 
        + CASE WHEN [UNAPPLIED code 4] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 4], 0) end 
        + CASE WHEN [UNAPPLIED code 5] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 5], 0) end)
FROM   CIT_UNAPPLIED
GROUP  BY [CMI ACCOUNT]  
)

不幸的是，这给了我一条错误信息：

当EXISTS没有引入子查询时，只能在选择列表中指定一个表达式。

Answer 1

错误消息表明子查询位于Select列表或WHERE子句

中

它应该是from

的一部分

SELECT 
b.[CMI ACCOUNT],
b.[Unapplied Funds 1 - Balance] 
FROM
(
SELECT [CMI ACCOUNT],
[Unapplied Funds 1 - Balance] = SUM (CASE WHEN [UNAPPLIED code 1] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 1], 0) end 
+ CASE WHEN [UNAPPLIED code 2] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 2], 0) end 
+ CASE WHEN [UNAPPLIED code 3] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 3], 0) end 
+ CASE WHEN [UNAPPLIED code 4] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 4], 0) end 
+ CASE WHEN [UNAPPLIED code 5] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 5], 0) end
FROM   CIT_UNAPPLIED
GROUP  BY [CMI ACCOUNT]  
) b

您可以像使用普通表一样将子查询加入其他表，视图或子查询

SELECT 
a.[Account Name],
b.[CMI ACCOUNT],
b.[Unapplied Funds 1 - Balance] 
FROM
Another Table a
JOIN
(
SELECT [CMI ACCOUNT],
[Unapplied Funds 1 - Balance] = SUM (CASE WHEN [UNAPPLIED code 1] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 1], 0) end 
+ CASE WHEN [UNAPPLIED code 2] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 2], 0) end 
+ CASE WHEN [UNAPPLIED code 3] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 3], 0) end 
+ CASE WHEN [UNAPPLIED code 4] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 4], 0) end 
+ CASE WHEN [UNAPPLIED code 5] = 'L' THEN 0 ELSE ISNULL( [UNAPPLIED BALANCE 5], 0) end
FROM   CIT_UNAPPLIED
GROUP  BY [CMI ACCOUNT]  
) b
ON a.[CMI ACCOUNT]=b.[CMI ACCOUNT]

取决于您希望其余查询执行的操作

TSQL中的汇总总数选择错误消息msg 116

1 个答案: