Step 1: Creating a Table /* Create Table with 7 entries - 3 are duplicate entries */ CREATE TABLE DuplicateRcordTable (Col1 INT, Col2 INT) Step 2: Inserting data into the table INSERT INTO DuplicateRcordTable SELECT 1, 1 UNION ALL SELECT 1, 1 --duplicate UNION ALL SELECT 1, 1 --duplicate UNION ALL SELECT 1, 2 UNION