多个语句之间

Question

我是一名正在学习SQL课程的学生开发人员.我目前正在尝试从表中检索几组行的总和.我是SQL开发的新手,我不太清楚以下场景中的问题是什么.我有一个大表,我想从中选择特定行,然后添加余额列.

以下将不会在结果中显示任何数据,我不太清楚为什么.我有一种预感,即每个表只能使用一次声明,但也许我错了？

Select Description, SUM(Balance) AS Total_Balance
FROM Chart_Of_Accounts
WHERE (Account BETWEEN ('400401') AND ('400407')) 
AND (Account BETWEEN ('440094') AND ('440100')) 
AND (Account BETWEEN ('450094') AND ('450100'))
GROUP BY Description, Balance 

编辑10.1.2012按照(Richard aka cyberkiwi)的要求

是)我有的

Set 1
|Account        |Description         |Balance
|4004xx         |Red Wine            |$2361.23
|4004xx         |White Wine          |$3620.23
|4004xx         |Rice Wine           |$1223.23

Set 2
|Account        |Description         |Balance
|4400xx         |Red Wine            |$4361.23
|4400xx         |White Wine          |$3260.23
|4400xx         |Rice Wine           |$223.23

Set 3
|Account        |Description         |Balance
|4500xx         |Red Wine            |$1361.23
|4500xx         |White Wine          |$1620.23
|4500xx         |Rice Wine           |$1223.23

结果我想要实现

Total
|Description         |Total_Balance
|Red Wine            |$8083.69
|White Wine          |$8500.69
|Rice Wine           |$2669.69

谢谢你阅读我的帖子!我也对SQL开发中的任何建议持开放态度,我们非常感谢任何反馈.

Answer 1

使用OR而不是AND!
你要表达的是,给我结果在A和B or之间,它在C和D之间等.

  SELECT Description, SUM(Balance) AS Total_Balance
    FROM Chart_Of_Accounts
   WHERE (Account BETWEEN '400401' AND '400407') 
      OR (Account BETWEEN '440094' AND '440100') 
      OR (Account BETWEEN '450094' AND '450100')
GROUP BY Description

我丢弃了无关的括号,但你甚至可以放弃其余的括号,因为在AND之后OR被处理了.请参阅:SQL Server Operator Precedence