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  1. Practice
  2. SQL
  3. Basic Join
  4. Ollivander's Inventory
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Ollivander's Inventory

  • kshuckerow + 0 comments

    Can't figure out where i'm going wrong.. I've checked for duplicate rows and minimums... Am I missing something? I've been stuck on this for 3 days. 

    SELECT id, age, coins_needed, power
FROM WANDS_PROPERTY JOIN WANDS on WANDS.code = WANDS_property.code
WHERE is_evil = 0
GROUP BY  age, power 
HAVING MIN(coins_needed) 
ORDER BY power DESC, age DESC;