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

  • amit_madhup + 1 comment

    my solution in oracle using window function

    select id,age,coins_needed,power   from (
select id,age,coins_needed,power, min(coins_needed) over (partition by w.code,age,power) as min_coins from wands w 
inner join wands_property wp on w.code = wp.code
where wp.is_evil =0
) where coins_needed = min_coins 
order by power desc,age desc;