Incrementalize cost per query

[ian-whitestone]

For a query history with >100M queries - model takes 8 min to run on an x-small.

If someone runs this hourly on an XSMALL, it will cost ~2.3K/year (2/60*8*24*365).

Also add:

• Add a ran_on_warehouse variable instead of doing warehouse_size is not null Improve cost per query freshness by using latest rates, closes #57 #62
• Review execution_start_time logic across all queries. Do we need to add in blocked_time? anything else?

[ian-whitestone]

Alternatively, could try and use a range join strategy to reduce the speed. It's likely the cartesian join in the query_hours CTE which is killing things.

[ian-whitestone]

Alternatively, could try and use a range join strategy to reduce the speed. It's likely the cartesian join in the query_hours CTE which is killing things.

nvm, cartesian join isn't the problem.