forecast_api/build/readme.md

Build A New Forecast
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* overwrite osmf: review dates and execute build_forecase.sql
* the product and customer attributes are wiped, they will need to be snapped (itemm must come first)
    1. snap_itemm.sql
    2. snap_customer.sql
    3. snap_cost_current.sql
    4. snap_fx.sql (if necessary)
    5. offline/last_price.sql (if necessary)
* build the pool for the more limited UI data set: build_pool.sql
* copy the pool to osmfs_dev from inclusion in the osm_stack and reporting: convert_pool_all.sql
* refresh osm_stack_refresh() to integrate into reporting

Integrate Actuals
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* `merge_actuals_prep` -> push a fresh baseline into a temp table
* `merge_actuals_exec` -> take the baseline and push it into `osmf`
* `merge_actuals_exec` -> manualls splice in `osmf` into `pool`