How to Select Row With Max Value in SQL

How can I find the maximum value in a single column?

Use the MAX() function:

SELECT MAX(column_name) AS max_value
FROM table_name;

How do I get multiple columns along with the maximum value in a group?

Use a subquery with a join:

SELECT t1.*
FROM table_name t1
JOIN (
    SELECT column_name, MAX(another_column) AS max_value
    FROM table_name
    GROUP BY column_name
) t2 ON t1.column_name = t2.column_name AND t1.another_column = t2.max_value;

Why use the GROUP BY clause for finding maximum values?

The GROUP BY clause groups rows with the same values, allowing the MAX() function to find the maximum value within each group.

What is the theoretical basis for using subqueries or joins to fetch additional columns with the maximum value?

Subqueries or joins combine aggregated results with original data, leveraging relational algebra to ensure accurate retrieval of additional columns along with maximum values.

SQL(Structured Query Language) is a powerful tool that is used to manage and manipulate data in a database. Sometimes you need to find the maximum value from a table of a column for each distinct value in another column. This task can be done using various techniques. In this article, we see the basic concept to fetch the rows with maximum value and also different examples to find rows with maximum value.