How can I add generated forecast data to a fact table?

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The problem I’m having

What is the technique for creatiing payroll forecast accruals?

The context of why I’m trying to do this

I have ADP sourced payroll data. I want to forecast a rolling 12 months foward. I receive a payroll csv with daily data. I use ADF to ingest the file, insert into a Snowflake staging table and create a fact table. How would I add future accruals into the fact table?

What I’ve already tried

None

Some example code or error messages

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