Hello gyys,
I want to create two variables Start_Period and End_Period like shown in below
Start_Period= End_Period (prev value for respective project)
End_Period = Start_Period + New_Cust - Cust_Left
What I have is Month Project New_Cust Cust_Left
what I need to do is Start_Period and End_Period
Month | Project | Start_Period | New_Cust | Cust_Left | End_Period | periodCalc |
11-Apr | a | 0 | 131 | 22 | 109 | 0.201835 |
11-May | a | 109 | 70 | 85 | 94 | 0.904255 |
11-Jun | b | 94 | 55 | 70 | 79 | 0.886076 |
11-Jul | a | 79 | 79 | 63 | 95 | 0.663158 |
11-Aug | a | 95 | 154 | 96 | 153 | 0.627451 |
11-Sep | b | 153 | 185 | 90 | 248 | 0.362903 |
11-Oct | aa | 248 | 181 | 103 | 326 | 0.315951 |
11-Nov | a | 326 | 161 | 114 | 373 | 0.30563 |
11-Dec | s | 373 | 231 | 97 | 507 | 0.191321 |
12-Jan | a | 507 | 183 | 86 | 604 | 0.142384 |
Any help would be highly appriciated.
Thanks in advance.
Mac
It seems you want to solve your assignment posting multiple questions.
Whats the problem are you facing to solve it. It's very straight forward calculation.
As a hint for start date.. read about retain or lag function.
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