How to copy the cumulative number from previous day or 2day before or 3day before if no data.
Best Answer
-
Yuhel,
Great question. This article explains how to downfill values, to get the most recent value even if there is no data.
How To Downfill Null Values In SQL | Towards Data Science
You will need to make a slight modification to this logic, where instead of getting the most recent value in the series, you get the cumulative sum of the series.
You can perform this calculation in SQL or through ETL.
Here is an example ETL i created to downfill the values. Your ETL should look similar, except have the cumulative sum instead of the first non-null value function applied.
0
Answers
-
Yuhel,
Great question. This article explains how to downfill values, to get the most recent value even if there is no data.
How To Downfill Null Values In SQL | Towards Data Science
You will need to make a slight modification to this logic, where instead of getting the most recent value in the series, you get the cumulative sum of the series.
You can perform this calculation in SQL or through ETL.
Here is an example ETL i created to downfill the values. Your ETL should look similar, except have the cumulative sum instead of the first non-null value function applied.
0
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