我正在尝试为每个步骤名称组创建唯一的步骤ID，如果步骤名称组重复，则会获得一个新的数字。
Step Name Process Time Step ID Step Name Process Time
---------- ----------------------- ---------- ---------- -----------------------
Prep 2018-02-26 12:00:00.000 1 Prep 2018-02-26 12:00:00.000
Prep 2018-02-26 12:00:10.000 1 Prep 2018-02-26 12:00:10.000
Wash 2018-02-26 12:00:20.000 2 Wash 2018-02-26 12:00:20.000
Wash 2018-02-26 12:00:30.000 2 Wash 2018-02-26 12:00:30.000
Dry 2018-02-26 12:00:40.000 3 Dry 2018-02-26 12:00:40.000
Dry 2018-02-26 12:00:50.000 3 Dry 2018-02-26 12:00:50.000
Wash 2018-02-26 12:01:00.000 4 Wash 2018-02-26 12:01:00.000
Wash 2018-02-26 12:01:10.000 ===> 4 Wash 2018-02-26 12:01:10.000
Break 2018-02-26 12:01:20.000 5 Break 2018-02-26 12:01:20.000
Prep 2018-02-26 12:01:30.000 6 Prep 2018-02-26 12:01:30.000
Wash 2018-02-26 12:01:40.000 7 Wash 2018-02-26 12:01:40.000
Dry 2018-02-26 12:01:50.000 8 Dry 2018-02-26 12:01:50.000
Dry 2018-02-26 12:02:00.000 8 Dry 2018-02-26 12:02:00.000
Dry 2018-02-26 12:02:10.000 8 Dry 2018-02-26 12:02:10.000
Dry 2018-02-26 12:02:20.000 8 Dry 2018-02-26 12:02:20.000
Finish 2018-02-26 12:02:30.000 9 Finish 2018-02-26 12:02:30.000
表记录是动态生成的，无法知道用户输入文本的步骤名称。
我在考虑使用：
select
CASE WHEN LAG([Step Name]) OVER (ORDER BY [Process Time]) = [Step Name]
THEN 'var'
ELSE 'var+1'
END as [Step ID]
,*
from #example_1 ORDER BY [Process Time] ASC;
给我一些类似的东西，
Step ID Step Name Process Time
---------- ---------- -----------------------
int+1 Prep 2018-02-26 12:00:00.000
int Prep 2018-02-26 12:00:10.000
int+1 Wash 2018-02-26 12:00:20.000
int Wash 2018-02-26 12:00:30.000
int+1 Dry 2018-02-26 12:00:40.000
int Dry 2018-02-26 12:00:50.000
int+1 Wash 2018-02-26 12:01:00.000
int Wash 2018-02-26 12:01:10.000
int+1 Break 2018-02-26 12:01:20.000
int+1 Prep 2018-02-26 12:01:30.000
int+1 Wash 2018-02-26 12:01:40.000
int+1 Dry 2018-02-26 12:01:50.000
int Dry 2018-02-26 12:02:00.000
int Dry 2018-02-26 12:02:10.000
int Dry 2018-02-26 12:02:20.000
int+1 Finish 2018-02-26 12:02:30.000
但我不确定如何在一个选择中实际+1一个var，因为它本身不是一个循环.. 内置的组功能没有产生结果我很满意所以我有点卡住。 有什么想法吗？