Need query... help me any one...

Hi,
i have the table like this,
| city | caste | cnt |
| 1 | 1 | 2 |
| 1 | 2 | 3 |
| 2 | 1 | 1 |
| 2 | 2 | 2 |
| 3 | 1 | 3 |
| 3 | 3 | 1 |
i want to select the top caste which is having the most cnt value for the each city.
expecting output
| city | caste | cnt |
| 1 | 2 | 3 |
| 2 | 2 | 2 |
| 3 | 1 | 3 |
Can you any one help me...?
Thanks,
S.Ashokkumar.

Hi,
i have tried like this...
select t.city,t.caste,max(t.cnt) as mm from (
     select city,caste,count(caste) as cnt from city group by city,caste)t
group by t.city
order by count(t.city) desc
it gives the wrong result set.
Is it correct or not?
Thanks
S.Ashokkumar.

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