pivot_forecast/readme.md

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the basic assumption is a single sales table is available to work with that has a lot of related data that came from master data tables originally.
the goal then is to break that back apart to whatever degree is necessary.
* create a table fc.live as copied from target
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* _**run**_ `target_info.sql` to populate the `fc.target_meta` table that holds all the columns and their roles
* fill in flags on table `fc.target_meta` to show how the data is related
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* _**run**_ `build_master_tables.sql` to generate foreign key based master data