Sorry I jumped the gun, didn't realize it was a delete. The problem is that GROUP BY does
not work with DELETE. You can try this:
DELETE FROM <mytable> where id IN (SELECT id from <my table> GROUP BY id
HAVING COUNT(*) > 1);
Not sure whether this will work though. You can always use a temp table for this purpose
although that is not so appealing as doing it in one query
CREATE TABLE tmp LIKE <mytable>;
INSERT INTO tmp SELECT * from <my table> GROUP BY id HAVING COUNT(*) = 1;
DROP TABLE <mytable>;
RENAME TABLE tmp TO <mytable>;
Thanks
Aveek
On May 9, 2011, at 7:54 PM, Aveek Misra wrote:
> SELECT * from <table> group by id having count = 1;
>
> On May 9, 2011, at 5:45 PM, abhishek jain wrote:
>
>> hi,
>> If we have a following mysql table:
>> Name - ids
>> A 1
>> B 1
>> C 2
>> D 3
>>
>> I want to remove all duplicate occurances and have a result like
>> Name - ids
>> C 2
>> D 3
>>
>> how can i do that with a query in mysql
>>
>> Pl. help asap
>> --
>> Thanks and kind Regards,
>> Abhishek jain
>
>
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