Question

我有一个包含数据的表

Date            Custid  CreditDebit     Units   Value
2013-03-29 06:21:46.903     1       C   1   10
2013-03-29 06:21:46.903     1       C   2   11
2013-03-29 06:21:46.903     1       C   1   12
2013-03-29 06:21:46.903     1       C   2   13
2013-03-29 06:21:46.903     1       D   1   20
2013-03-29 06:21:46.903     1       D   2   21
2013-03-29 06:21:46.903     1       C   1   20
2013-03-29 06:21:46.903     1       C   2   21

我需要获得一个临时表输出，如下所示

Date            Custid  CreditDebit     Units   Value Balance
2013-03-29 06:21:46.903     1       C   1   42      42-20
2013-03-29 06:21:46.903     1       c   2   45      22+45-21
2013-03-29 06:21:46.903     1       D   1   20      ---
2013-03-29 06:21:46.903     1       D   2   21      ---

这是Value列的总和，它基于'CreditDebit'和Units。如何使用CTE sql Query

实现此目的

Answer 1

;WITH summary_table_cte
     AS (SELECT Date,
                Custid,
                CreditDebit,
                Units,
                sum(value) AS [Value]
         FROM   YourTable
         GROUP  BY Date,
                   Custid,
                   CreditDebit,
                   Units)
SELECT *
FROM   summary_table_cte;

注意语句开头的分号。 CTE前面的语句必须以分号结束。通过在WITH前加上它，你可以把它放在任何地方。

使用CTE的复杂查询

1 个答案: