generate a mysql BETWEEN clause to find within a date range

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requires Rails libraries. could be rewritten to just use core Ruby libs, but I'm too lazy right now and I use this entirely in my Rails apps.

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  1. def mysql_date_compare(start_date, end_date, col_name = :created_at)
  2. range_start = (Date.parse(start_date.to_s) -"%Y-%m-%d 23:59:59")
  3. range_end = (Date.parse(end_date.to_s) +"%Y-%m-%d 00:00:00")
  4. "#{col_name.to_s} BETWEEN '#{range_start}' AND '#{range_end}'"
  5. end

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