SQL Server如何检索2个数字之间的所有数字

Question

我有4列 - 代码,金额,开始,结束.我想在开始和结束列中取出两个金额,并将它们更改为包含所有结果的一列.有关如何实现这一目标的任何建议？谢谢.

Current Results:
Code  Amount  Start  End
1     5000    2015   2016
2     5000    2014   2016
3     20000   2012   2016

Desired Results:
Code  Amount  StartEnd
1     5000    2015
1     5000    2016
2     5000    2014
2     5000    2015
2     5000    2016
3     20000   2012
3     20000   2013
3     20000   2014
3     20000   2015
3     20000   2016

Answer 1

您可以使用递归cte生成最小开始和最大结束之间的所有数字,并加入生成的数字.

with cte as (select min(start) col,max(end) mx from tablename
             union all
             select col+1,mx from cte where col < mx)
select t.code,t.amount,c.col
from cte c
join tablename t on c.col between t.start and t.end 

或者更简单

with cte as (select id,amount,start startend,end from tablename
             union all
             select id,amount,start+1,end from cte where start<end)
select id,amount,startend
from cte
order by 1,3