How to delete duplicate records in a table in oracle sql

16.06.2018 Micheal
It is a common question in interviews which is asked frequently. I have one table here 'student' It has two duplicate records. For example, you may want to preserve the newest or oldest row.
To identify the duplicate record. When working in Oracle, you may find that some of your records have duplicates. It's gonna hurt me It's gonna kill when you desert me. Check out the examples below to get real world examples on how to delete duplicate records from a table. Then truncate the main table and insert records from the temp table. However, it is time-consuming to do it manually if the table has a large number of duplicate records.
How to delete duplicate records in a table in oracle sql
Let c how to remove duplicates from a table. Once youve found the duplicate records in a table, you often want to delete the unwanted copies to keep your data clean. Let us know if the manual you need is not included here. Consider the EMP table with below rows. Now we see how to delete the duplicate records from the products table in different ways. Group by operation should be on the columns which identify the duplicates. The following Delete statement deletes the rows using the Rowid.