MySQL:तालिका में प्रत्येक समूह के लिए nवां उच्चतम मान प्राप्त करें

मुझे आशा है कि एक बेहतर तरीका है, लेकिन आप इसे दो उपश्रेणियों को प्रतिच्छेद या नॉट-इन करके प्राप्त कर सकते हैं:

Select mytable.Store, mytable.Dept, mytable.Order, mytable.Amount
from mytable m
inner join 
  (Select Amount from mytable n where m.store = n.store and m.dept = n.dept order by Amount desc limit 2) as high_enough
  on mytable.Amount = high_enough.Amount
left join 
   (Select Amount from mytable n where m.store = n.store and m.dept = n.dept order by Amount desc limit 2) as too_high
  where too_high.Amount is null
group by Store, Dept;