Pergunta de entrevista da empresa Mymind infotech

Delete duplicate records in a table

Respostas da entrevista

Sigiloso

9 de jul. de 2015

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

2

Sigiloso

27 de set. de 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