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Hello! I have a table with date and customer id. Do you need to calculate how many months the client used the services? I am attaching a table with an example and the result. Thank you!| Date | CustomerID |
| 01.10.2023 | 24 |
| 01.10.2023 | 24 |
| 01.10.2023 | 123 |
| 01.10.2021 | 124 |
| 01.10.2021 | 124 |
| 01.10.2023 | 126 |
| 01.10.2023 | 126 |
| 01.01.2022 | 24 |
| 01.02.2021 | 24 |
| 01.03.2021 | 245 |
| 01.04.2022 | 245 |
| 01.04.2023 | 245 |
| 01.07.2023 | 245 |
Result:
| CustomerID | Result (Count Month Active Customer) |
| 24 | 4 |
| 123 | 1 |
| 124 | 1 |
| 126 | 1 |
| 245 | 4 |
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