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    The ROW_NUMBER() function in SQL assigns a sequential integer to each row within the result set of a query. This function is particularly useful for tasks like pagination and ranking.

    Example

    SELECT
    ROW_NUMBER() OVER (ORDER BY salary) AS row_num,
    first_name,
    last_name,
    salary
    FROM
    employees;
    Copied!

    In this example, the ROW_NUMBER() function assigns a unique number to each row based on the order of the salary column.

    Using PARTITION BY

    The PARTITION BY clause divides the result set into partitions and assigns a unique number to each row within each partition.

    SELECT
    department_name,
    first_name,
    last_name,
    salary,
    ROW_NUMBER() OVER (PARTITION BY department_name ORDER BY salary DESC) AS row_num
    FROM
    employees;
    Copied!

    This query assigns a unique number to each employee within their respective departments based on their salary.

    Pagination

    The ROW_NUMBER() function can be used for pagination by assigning a sequential number to each row and then filtering based on these numbers.

    WITH numbered_employees AS (
    SELECT
    ROW_NUMBER() OVER (ORDER BY salary) AS row_num,
    first_name,
    last_name,
    salary
    FROM
    employees
    )
    SELECT
    first_name,
    last_name,
    salary
    FROM
    numbered_employees
    WHERE
    row_num BETWEEN 11 AND 20;
    Copied!
    How to number a row in a SQL query?
    The query returns the row number of each piece of furniture along with its name and code: Note that the names of the pieces of furniture are not sorted. If you’d like to number each row in a result set, SQL provides the ROW_NUMBER() function. This function is used in a SELECT clause with other columns.
    learnsql.com
    LearnSQL.com
    https://learnsql.com/blog/row-number-over-in-sql
    How to Use ROW_NUMBER OVER () in SQL | LearnSQL.com
  1. SQL Tutorial
    https://www.sqltutorial.org › ... › sql-row_number

    SQL ROW_NUMBER Function

    This tutorial shows you how to use the ROW_NUMBER () to assign a sequential number to each row in a query result set.
    Basic Row_Number() Function Example #

    The following statement retrieves the first name, last name, and salary of all employees and uses the ROW_NUMBER()function to add sequential integer number to each row. Try it The following picture shows the partial result …

    Using SQL Row_Number() Function For Pagination #

    The ROW_NUMBER()function can be useful for for pagination. For example, if you want to display all employees on a table in an application by pages, which each page has ten records. 1. First, use the ROW_NUMBER()function to assign each r…

  2. LearnSQL.com
    https://learnsql.com › blog › row-number-over-in-sql

    How to Use ROW_NUMBER OVER () in SQL

    Sep 28, 2023 · In any of these cases, you need to calculate the position of the row in the ranking. To do this, you need the ROW_NUMBER() window function. The …

  3. GeeksForGeeks
    https://www.geeksforgeeks.org › sql-server › sql-server-ro…

    SQL Server Row_Number Function With PARTITION BY

    Nov 17, 2025 · SQL Server's ROW_NUMBER () function is a flexible tool that allows you to provide each row in a result set a unique row number. It is equally …

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    https://www.sparkcodehub.com › sql › advanced-queries › row...

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  6. Microsoft Learn
    https://learn.microsoft.com › en-us › sql › t-sql › functions › row...

    ROW_NUMBER (Transact-SQL) - SQL Server | Microsoft Learn

    Nov 18, 2025 · Transact-SQL reference for the ROW_NUMBER function. This function numbers the output of a result set.

  7. DataCamp
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    ROW_NUMBER SQL Function: How to Display Row Numbers

    Jun 12, 2024 · To understand how rows relate within a dataset, we can use the ROW_NUMBER() function. This function assigns sequential numbers to rows within a result set, providing a clear order …

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  9. sqltutorial.net
    https://www.sqltutorial.net › row_number.html

    ROW_NUMBER – SQL Tutorial

    Learn how to use the SQL ROW_NUMBER () function to assign a unique sequential number to each row in a result set. See the syntax, an example, and how to apply the function to rank and paginate data.

  10. Simplilearn
    https://www.simplilearn.com › ... › row-number-funtion-in-sql

    ROW_NUMBER Function in SQL: A Complete Guide ...

    Oct 22, 2025 · Discover how the ROW_NUMBER function in SQL works, with examples and tips. Learn to rank rows and optimize queries effectively.

  11. dbt Developer Hub
    https://docs.getdbt.com › sql-reference › row-number

    Working with the SQL ROW_NUMBER - dbt Labs

    Dec 12, 2025 · In this page, let’s go deep into the ROW_NUMBER function and talk about what it is, how to use it, and why it’s important in analytics engineering …

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