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mssql
select
id,
age,
coins_needed,
power
from (
select
w.id,
wp.age,
w.coins_needed,
w.power,
rank() over(partition by w.power, wp.age order by w.coins_needed) Rank
from Wands w
join Wands_Property wp
on w.code = wp.code
where wp.is_evil = 0
) t
where Rank = 1
order by power desc, age desc, coins_needed;
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mssql select id, age, coins_needed, power from ( select w.id, wp.age, w.coins_needed, w.power, rank() over(partition by w.power, wp.age order by w.coins_needed) Rank from Wands w join Wands_Property wp on w.code = wp.code where wp.is_evil = 0 ) t where Rank = 1 order by power desc, age desc, coins_needed;