提供以下2个表格:
T1
------------------
From | To | Value
------------------
10 | 20 | XXX
20 | 30 | YYY
30 | 40 | ZZZ
T2
------------------
From | To | Value
------------------
10 | 15 | AAA
15 | 19 | BBB
19 | 39 | CCC
39 | 40 | DDD
如何利用2008年服务器上的T-SQL取得以下成果?
The From/To ranges are sequential (there are no gaps) and the next From always has the same value as the previous To
Desired result
-------------------------------
From | To | Value1 | Value2
-------------------------------
10 | 15 | XXX | AAA
15 | 19 | XXX | BBB
19 | 20 | XXX | CCC
20 | 30 | YYY | CCC
30 | 39 | ZZZ | CCC
39 | 40 | ZZZ | DDD