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Using Google Sheets script to check a cache sheet for each key

Time:05-31

I am pulling stock market data from Yahoo! Finance. For data that does not change often, I do not want to contact Yahoo! each time, but source data from a db sheet that acts as a cache:

  1. yahoofinance() is called per ticker from 'Dashboard' sheet
  2. yahoofinance() calls db_data to see if data for ticker is available in db

I have an example sheet Results

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