PL/SQL Max

The Max function returns the maximum value of an expression.

Max syntax

select max(expression) from table;

Max example

COURSE_ID NAME DESCRIPTION DURATION PRICE
1 SQL 1 SQL course for beginners 1 week 10
2 SQL 2 SQL course for advanced 2 week 50
3 HTML5 Learn HTML 5 1 week 10
4 PHP PHP course 4 week 75
5 CSS Learn CSS 2 week 20 
select max(price) from course;

Result: 75


select max(price*2) from course;

Result: 150