Question

创建查询以将下面的SELECT查询汇总到一个查询中而不是手动运行每个查询时，我遇到了一些问题。这有助于我自己创建一个更容易，更快速的CSV文件

select top 200 * from dbo.abacus where  type =  'A'
select top 200 * from dbo.abacus where  type =  'B'
select top 200 * from dbo.abacus  where type =  'E'
select top 200 * from dbo.abacus  where type =  'F'
select top 200 * from dbo.abacus  where type =  'F'
select top 200 * from dbo.abacus  where type =  'FX'
select top 200 * from dbo.abacus  where type =  'E'

Answer 1

select top 200 * from dbo.abacus where type = 'a'
union 
select top 200 * from dbo.abacus where type = 'b'

更多阅读http://msdn.microsoft.com/en-us/library/ms180026(v=sql.100).aspx

Answer 2

尝试UNION：

select top 200 * from dbo.abacus where  type =  'A'
union
select top 200 * from dbo.abacus where  type =  'B'
union
select top 200 * from dbo.abacus  where type =  'E'
union
select top 200 * from dbo.abacus  where type =  'F'
union
select top 200 * from dbo.abacus  where type =  'F'
union
select top 200 * from dbo.abacus  where type =  'FX'
union
select top 200 * from dbo.abacus  where type =  'E'

从dbo.XXXXX中选择top n，其中tradetype in（＆＃39; a＆＃39;，＆＃39; b＆＃39;，＆＃39; c＆＃39;）

2 个答案: