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I understand the question i.e for each combination of age and power you need to find the wand with minimum cost that is not evil.
I came up with this:
SELECT MIN(w.coins_needed),w.power,wp.age from wands w
inner join wands_property wp
on w.code= wp.code
where wp.is_evil=0
group by w.power,wp.age
order by w.power desc, wp.age desc;
The solution requires me to add ID of the wand and I am struggling with the same.
Any Idea how to get the ID infront of my solution
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Ollivander's Inventory
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Can you (or someone else) help me?
I understand the question i.e for each combination of age and power you need to find the wand with minimum cost that is not evil.
I came up with this:
SELECT MIN(w.coins_needed),w.power,wp.age from wands w inner join wands_property wp on w.code= wp.code where wp.is_evil=0 group by w.power,wp.age order by w.power desc, wp.age desc;
The solution requires me to add ID of the wand and I am struggling with the same. Any Idea how to get the ID infront of my solution