SQL Delete Duplicate Records in a Table

 Often we get into the situation where we have duplicate rows or records in a table. Now let us see how to select and delete these duplicate rows or records. 
 
We can use the following SQL command to delete the duplicate rows or records in a table. Here the inner select subquery will identify the duplicate rows in the table.

DELETE FROM TableName a
WHERE
  a.rowid >
   ANY (
     SELECT b.rowid FROM TableName b
     WHERE
        a.column1 = b.column1
     AND
        a.column2 = b.column2
        ); 

Surely you will have to replace the TableName with the name of your table. And you will also replace the column1 and column2 with the columns of your own table.

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