Hello, I am working on a project and I am stuck on a problem. I want to delete Rows based on multiple conditions on more than one column. Following is the Example of the Data.
| Customer_Number | Date | Appointment_Status | Verdict |
| 6298430 | 1/14/2019 | A | |
| 6298490 | 1/16/2019 | A | |
| 6298490 | 2/20/2019 | A | |
| 6298490 | 3/13/2019 | A | |
| 6298490 | 3/14/2019 | A | |
| 6298490 | 8/29/2019 | A | |
| 6298490 | 8/29/2019 | A | |
| 6298490 | 9/17/2019 | A | |
| 6298490 | 1/27/2020 | A | |
| 6298490 | 2/12/2020 | A | |
| 6298490 | 3/4/2020 | A | |
| 9485034 | 1/30/2019 | A | |
| 9485034 | 1/31/2019 | A | |
| 9485034 | 4/29/2019 | A | |
| 9485034 | 5/17/2019 | A | |
| 9485034 | 11/19/2019 | A | |
| 9485034 | 6/12/2020 | S |
I would like the Code to read through Each and Every line and use the following Logic.
1. For the First Customer_Number (6298490) :
* I would want the code to check for each date if there is a Corresponding Value of "S" in the (Appointment_Status) colum . As soon as it detects tje value "S" it should stop the detection for that particular Customer_Number and it should say as "Appointment Scheduled" in the column (Verdict) next to it.
* IF there is no Corresponding Value of "S" then it should "DELETE" all the earlier rows but keep the row with the most recent date and say as " NO - Appointment Scheduled" in the column (Verdict) next to it.
* Once it has gone through all the rows of the First Customer_Number it should repreat it for the next Customer_Number.
The Desirable Output I am looking for is :
| Customer_Number | Date | Appointment_Status | Verdict |
| 6298430 | 1/14/2019 | A | This row should be Deleted |
| 6298490 | 1/16/2019 | A | This row should be Deleted |
| 6298490 | 2/20/2019 | A | This row should be Deleted |
| 6298490 | 3/13/2019 | A | This row should be Deleted |
| 6298490 | 3/14/2019 | A | This row should be Deleted |
| 6298490 | 8/29/2019 | A | This row should be Deleted |
| 6298490 | 8/29/2019 | A | This row should be Deleted |
| 6298490 | 9/17/2019 | A | This row should be Deleted |
| 6298490 | 1/27/2020 | A | This row should be Deleted |
| 6298490 | 2/12/2020 | A | This row should be Deleted |
| 6298490 | 3/4/2020 | A | NO- Appointment Scheduled |
| 9485034 | 1/30/2019 | A | This row should be Deleted |
| 9485034 | 1/31/2019 | A | This row should be Deleted |
| 9485034 | 4/29/2019 | A | This row should be Deleted |
| 9485034 | 5/17/2019 | A | This row should be Deleted |
| 9485034 | 11/19/2019 | A | This row should be Deleted |
| 9485034 | 6/12/2020 | S | Appointment Scheduled |
So, Finally it would look like:
| Customer_Number | Date | Appointment_Status | Verdict |
| 6298490 | 3/4/2020 | A | NO- Appointment Scheduled |
| 9485034 | 6/12/2020 | S | Appointment Scheduled |
Please Help.
Regards,
Yogesh