SQL ROW_NUMBER() Analytical Function Explained | Learn How to Number Rows in SQL

In this video, I'll walk you through SQL's ROW_NUMBER() function, a powerful tool for numbering rows in a result set. Whether you're looking to rank data, remove duplicates, or paginate results, ROW_NUMBER() helps you handle these tasks efficiently.

What You'll Learn:
How the ROW_NUMBER() function works.
Using the PARTITION BY and ORDER BY clauses.
Practical examples of how to use ROW_NUMBER() for data analysis.

ROW_NUMBER() OVER (PARTITION BY column_name ORDER BY column_name)

Example:
Learn how to assign row numbers to employees in different departments based on their salaries.
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Create table Script
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CREATE TABLE stocks(
stock_id int,
stock_name varchar(50),
stock_date date,
stock_price decimal(10,2)
);


INSERT INTO stocks VALUES(100,'Vikas Lifecare','06-SEP-2022',5.10);
INSERT INTO stocks VALUES(100,'Vikas Lifecare','07-SEP-2022',5.00);
INSERT INTO stocks VALUES(100,'Vikas Lifecare','08-SEP-2022',5.25);
INSERT INTO stocks VALUES(100,'Vikas Lifecare','09-SEP-2022',5.10);
INSERT INTO stocks VALUES(100,'Vikas Lifecare','12-SEP-2022',5.15);
INSERT INTO stocks VALUES(120,'Globalspace Technologies','30-AUG-2022',42.00);
INSERT INTO stocks VALUES(120,'Globalspace Technologies','01-SEP-2022',42.65);
INSERT INTO stocks VALUES(120,'Globalspace Technologies','02-SEP-2022',43.65);
INSERT INTO stocks VALUES(120,'Globalspace Technologies','05-SEP-2022',47.05);
INSERT INTO stocks VALUES(120,'Globalspace Technologies','06-SEP-2022',44.15);
INSERT INTO stocks VALUES(120,'Globalspace Technologies','20-SEP-2022',39.75);
INSERT INTO stocks VALUES(191,'Zomato Ltd','22-SEP-2022',63.30);
INSERT INTO stocks VALUES(191,'Zomato Ltd','23-SEP-2022',60.80);