Question

我有下表t_vouchers：

id  code  amount  isactive
1   a1    10      1
2   a2    20      0
3   a3    30      1

我想计算所有有效凭证的总和（金额），但也要获得另一列，其中包含此总和中包含的ID列表。如下所示：

sum   ids
40    1,3

查询类似于：

 select sum(amount) /* ? how to get here the ids stuffed in a comma separated string ? */
 from t_vouchers
 where isactive = 1

Answer 1

这应该有效：

 select sum(amount) sum,
        (
        STUFF((
            SELECT  DISTINCT ',' + CAST(a.id AS VARCHAR(100))
            FROM    t_vouchers a
            WHERE   a.isactive = 1
            FOR XML PATH('')
            ),1,1,'')
        ) ids
 from t_vouchers
 where isactive = 1

这是SQL Fiddle

Sql Server - 获取总计行的ID

1 个答案: