在SQL Server中动态选择TOP@var

SELECT TOP (@count) * FROM SomeTable

这仅适用于SQL 2005+

语法“select top(@var)…”仅适用于SQL SERVER 2005+。对于SQL 2000,您可以执行以下操作:

set rowcount @top

select * from sometable

set rowcount 0 

希望这有帮助

在x0n的示例中,它应该是:

SET ROWCOUNT @top

SELECT * from sometable

SET ROWCOUNT 0

http://msdn.microsoft.com/en-us/library/ms188774.aspx

或者把变量放在括号里

DECLARE @top INT = 10;

SELECT TOP (@Top) *
FROM <table_name>;

declare @rows int = 10

select top (@rows) *
from Employees
order by 1 desc -- optional to get the last records using the first column of the table

还可以使用动态SQL并使用exec命令执行:

declare @sql  nvarchar(200), @count int
set @count = 10
set @sql = N'select top ' + cast(@count as nvarchar(4)) + ' * from table'
exec (@sql)