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Channel: Return previous running total when value is null in a time series - Database Administrators Stack Exchange
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Answer by Erwin Brandstetter for Return previous running total when value is...

One way is to generate one row per (customer_id, the_day)before running the window function. Like:SELECT c.customer_id, d.the_day , sum(t.tsla_amount) OVER w AS tsla_running_amount , sum(t.goog_amount)...

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Return previous running total when value is null in a time series

This is a continuation of a previous question, where table definition and sample data can be found. (Huge thanks to @Erwin Brandstetter for the help there).All of this is being done on a PostgreSQL...

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