i have a table with such column(user_id,user_name,user_adress,salary) in my DB where user_id is the primary key and an auto-increment field..suppose virus attacked in my databse phpmyadmin..and some of the rows of my table have been copied multiple times and some rows being unchanged..nw i want to clean up the table..can anyone kindly give me a solution writing me a sql query..i have tried it with self join bt can reach the solution..
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