MySQL Query with multiple LIMITS

Question

Let\'s say I have the following table with hundreds of toys of various colors...

---------------------------
  ITEM  |  COST  |  COLOR
----------------------         


        

Answer 1

ROW_NUMBER() could be used:

SELECT *
FROM (SELECT *, ROW_NUMBER() OVER(PARTITION BY COLOR ORDER BY COST) AS RN
      FROM TOYS
      WHERE COLOR IN ('YELLOW', 'WHITE', 'BLUE')) sub
WHERE RN <= CASE COLOR WHEN 'YELLOW' THEN 1 WHEN 'WHITE' THEN 3 WHEN 'BLUE' THEN 2 END