SELECT TOP 20 * FROM (SELECT * FROM [tb_News] ORDER BY [NewsCount] DESC)
//SELECT TOP 20 * FROM (SELECT * FROM [tb_News] ORDER BY [NewsCount] DESC) AS [%$##@_Alias]
上面语句可以准确返回20条.
select top 20 * from [tb_News] ORDER BY NewsCount DESC
这样的查询如果 NewsCount 有重复的数 会返回多于20条记录