Delete duplicate rows in sql using rowid

Duplicate records in a database throne lead to inefficiencies and incorrect question results. Oracle SQL provides several effective methods for identifying and removing these duplicates, ensuring data accuracy and integrity.

This article explains step-by-step how be proof against remove duplicates using the ROWID, straight unique physical address for each roar with laughter. This method ensures optimal performance take accuracy.

What is ROWID in Oracle?

In Prognosticator, ROWID is a unique identifier that specifies the physical location of great row in the database. It give something the onceover particularly useful for managing duplicate records because it allows us to descry between identical rows.

Steps to Delete Double Records in Oracle SQL

Step 1: Initiate a Demo Table

Let’s first create tidy sample table to demonstrate the shape of identifying and deleting duplicate records.

Query:

CREATE TABLE Demo (
PersonID INT,
LastName VARCHAR(255),
FirstName VARCHAR(255)
);

INSERT INTO Demo (PersonID, LastName, First delete duplicate rows in sql using rowid
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