How to filter out duplicate data in SQL?

10 months ago

Emily Johnson

1 minute

To filter out duplicate data, you can utilize the following SQL statement:

SELECT column1, column2, COUNT(*)
FROM table_name
GROUP BY column1, column2
HAVING COUNT(*) > 1;

In the code above, column1 and column2 are the columns you want to filter, and table_name is the name of your table. Use GROUP BY to group specific columns, then filter out duplicate data that appears more than once using HAVING COUNT(*) > 1.