Calculate Max, Min, Or Average Of Column

Create Table

-- Create table called adventurers
CREATE TABLE adventurers (
    -- string variable
    name varchar(255),
    -- integer variable
    age int,
    -- string variable
    race varchar(255),
    -- string variable
    weapon varchar(255)
)

Insert Rows

-- Insert into the table adventurers
INSERT INTO adventurers (name, age, race, weapon)
VALUES ('Fjoak Doom-Wife', 28, 'Human', 'Axe'),
       ('Alooneric Cortte', 29, 'Elf', 'Bow'),
       ('Piperel Ramsay', 35, 'Elf', 'Sword'),
       ('Casimir Yardley', 14, 'Elf', 'Magic')

Calculate Max

-- Return maximum value of of age in adventurers
SELECT MAX(age) FROM adventurers
max
35

Calculate Min

-- Return minimum value of of age in adventurers
SELECT MIN(age) FROM adventurers
min
14

Calculate Average

-- Return average value of of age in adventurers
SELECT AVG(age) FROM adventurers
avg
26.5