Mymind infotech Interview Question: Delete duplicate records in a table

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Mymind infotech

Delete duplicate records in a table

Anonymous

9 Jul 2015

I answers this question like a normal way, but they want query which processing time is very low.

Anonymous

27 Sept 2018

They are asking to to this with hashmap or by using set in java. So the time will be low and loop don't have to execute each and every time