关于解决SQL语句select top 后面不能接变量的问题（sql 2000）,采用动态的Sql语句来处理
ALTER proc [dbo].[sp_GetSubjectByTypeAndNum]
@type VarChar(50),
@num Int
as
declare @a int
set @a=@num
declare @sql nvarchar(4000)
if @type='Single'
begin
--根据参数设置查询单选题Sql语句
--select top (@num) ID,Title,AnswerA,AnswerB,AnswerC,AnswerD from SingleProblem order by newid()
set @sql = 'select top '+ cast(@a as nvarchar(10)) + ' * from SingleProblem order by newid()' execute(@sql)
end