text: SELECT i.customer_id,
  		i.actual_start,
  		c.start_date,
  		c.customer_id,
  		q.result
  FROM contracts c
  JOIN installs i
  ON c.customer_id = i.customer_id
  JOIN quotes q
  ON c.customer_id = q.customer_id ;
  
  SELECT *
  FROM quotes
  WHERE result = 'Won';
  --produces 38,098 rows
  
  SELECT *
  FROM installs;
  --produces 31,036 rows
  --therefore not all won contracts were actually carried out.
  
  SELECT MIN(mrr)
  FROM contracts
  WHERE mrr <= '0';
  --this shows that 41,566 were signed and all were paid for.
  
  -- get the inquiry dates (quotes), response date, scheduled date, actual start (installs), start date(contracts)
  --i don't expect lost quotes to have a scheduled date.
  
  --get all won contracts,
  --get all scheduled date
  