分段查询问题
求教
请问能在有序表中分段查询,如我想查询20--50 条记录 或100--200条记录
怎么实现?
------解决方案--------------------取n到m条记录的语句
1.
select top m * from tablename where id not in (select top n * from tablename)
2.
select top m * into 临时表(或表变量) from tablename order by columnname -- 将top m笔插入
set rowcount n
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:
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 identitycol between n and m
------解决方案--------------------老乌龟完全正解~
------解决方案--------------------来晚了,嘿嘿,顶一下