求mssql语句,选择第m到第n行数据!
把用户数据按照age排序:
select * from users order by age;
然后选择这个结果集里的第m到第n行数据。
oracle里面可以用rownum,但是mssql里不知道怎么实现。求解。
谢谢各位!
[解决办法]
--sql2005及以上版本select *from( select *,rid=row_number() over (order by age) from [users]) twhere rid between @m and @n--sql2000select *,rid=identity(int,1,1) into #tbfrom [users]order by ageselect * from #tb where rid between @m and @ndrop table #tb
[解决办法]
取n到m行1. select top (n-m+1) * from tablename where id not in (select top n id from tablename order by id asc/*|desc*/) 2. select top m * into 临时表(或表变量) from tablename order by columnname -- 将top m笔插入到临时表 set rowcount n --只取n条结果select * from 表变量 order by columnname desc 3. select top n * from (select top m * from tablename order by columnname) a order by columnname desc 4.如果tablename里没有其他identity列,那么: 先生成一个序列,存储在一临时表中.select identity(int) id0,* into #temp from tablename 取n到m条的语句为: select * from #temp where id0 > =n and id0 <= m 如果你在执行select identity(int) id0,* into #temp from tablename这条语句的时候报错,那是因为你的DB中间的select into/bulkcopy属性没有打开要先执行: exec sp_dboption 你的DB名字,'select into/bulkcopy',true 5.如果表里有identity属性,那么简单: select * from tablename where identity_col between n and m 6.SQL2005开始.可以使用row_number() over()生成行号;with cte as( select id0=row_number() over(order by id),* from tablename)select * from cte where id0 between n to m慢慢看吧
[解决办法]
这个根据实际情况来吧,我比较喜欢用row_number()over()这个
[解决办法]