New Create A column to count Cycle Time

[#1]

Refer to below data table, how to New Create A column to count Cycle Time? kindly help to suggest. thanks a lot.

1.need sort properly by "Group Name" and "Date".

2. within same "Group Name", with "Date" increase, column"Count" number increases, after a certain level (the max value maybe not fixed, sometimes change), it will be back to small value, which means another cycle start.

Group Name	Date	Count
P1	4/22/2020 7:26	1
P1	4/22/2020 8:26	2
P1	4/22/2020 9:26	3
P1	4/22/2020 10:26	4
P1	4/22/2020 11:26	5
P1	4/22/2020 12:26	6
P1	4/22/2020 13:26	7
P1	4/22/2020 14:26	8
P1	4/22/2020 15:26	9
P1	4/22/2020 16:26	10
P1	4/22/2020 17:26	13
P1	4/22/2020 18:26	1
P1	4/22/2020 19:26	2
P1	4/22/2020 20:26	3
P1	4/22/2020 21:26	4
P1	4/22/2020 22:26	5
P1	4/22/2020 23:26	6
P1	4/23/2020 0:26	7
P1	4/23/2020 1:26	8
P1	4/23/2020 2:26	9
P1	4/23/2020 3:26	10
P1	4/23/2020 4:26	11
P1	4/23/2020 5:26	1
P1	4/23/2020 6:26	2
P1	4/23/2020 7:26	3
P1	4/23/2020 8:26	4
P1	4/23/2020 9:26	5
P1	4/23/2020 10:26	6
P1	4/23/2020 11:26	7
P1	4/23/2020 12:26	8
P1	4/23/2020 13:26	9
P1	4/23/2020 14:26	10
P1	4/23/2020 15:26	18
P2	4/22/2020 5:26	1
P2	4/22/2020 6:26	2
P2	4/22/2020 7:26	3
P2	4/22/2020 8:26	4
P2	4/22/2020 9:26	5
P2	4/22/2020 10:26	6
P2	4/22/2020 11:26	7
P2	4/22/2020 12:26	8
P2	4/22/2020 13:26	9
P2	4/22/2020 14:26	10
P2	4/22/2020 15:26	11
P2	4/22/2020 16:26	1
P2	4/22/2020 17:26	2
P2	4/22/2020 18:26	3
P2	4/22/2020 19:26	4
P2	4/22/2020 20:26	5
P2	4/22/2020 21:26	6
P2	4/22/2020 22:26	7
P2	4/22/2020 23:26	8
P2	4/23/2020 0:26	9
P2	4/23/2020 1:26	10
P2	4/23/2020 2:26	11
P2	4/23/2020 3:26	1
P2	4/23/2020 4:26	2
P2	4/23/2020 5:26	3
P2	4/23/2020 6:26	4
P2	4/23/2020 7:26	5
P2	4/23/2020 8:26	6
P2	4/23/2020 9:26	7
P2	4/23/2020 10:26	8
P2	4/23/2020 11:26	9
P2	4/23/2020 12:26	10
P2	4/23/2020 13:26	11

[#2]

Given your data table you provided, the following formula will work.  I have attached your data table with the formula applied

If( Row() == 1, myCycle = 1 );
If( :Count < Lag( :Count ),
	myCycle
	++);
myCycle;

[#3]

thanks a lot, it works well for one group name, still need your suggestion on multiple group names.

actually this table have one column named "group name", in this column have P1 and P2 2 groups, what I want is "P1/P2 count cycle time separately".

so P2 start to count from "1" instead of "4".

thanks a lot.

[#4 · Accepted solution]

One just needs to check to see if the group changes and then reset myCycle

If(
	Row() == 1, myCycle = 1,
	:Group Name != Lag( :Group Name ), myCycle = 0
);
If( :Count < Lag( :Count ),
	myCycle
	++);
myCycle;

[#5]

Cool, it works well, thanks so much.