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Query to Re-index Primary Key of MySQL Database

SET @newid=0;
UPDATE tablename SET primary_key_id=(@newid:=@newid+1) ORDER BY primary_key_id;
This query will reindex the primary key starts from 1

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I am V.Shakya, Software Developer & Consultant I like to share my ideas, views and knowledge to all of you who come across my website. I am young, enthusiastic, highly motivated and self disciplined person. I completed my studies in Master of Computer Application and currently giving my technical expertise to one of the Big IT company. I have more than fifteen years of experience in vast field of Programming , Designing and Development of websites and various software's.

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