Deals Of The Week - hours only!Up to 80% off on all courses and bundles.-Close

Wrap course as a gift

Prepare your gift and double-check it looks just right.

Form validation errors

Recipient's Name:
Recipient's Email:
Your Message (Optional):
Proceed to Checkout

Common Functions in PostgreSQL

Review
So you think you can count?
Rounding functions and more
Review and practice

Instruction

Great! In PostgreSQL, simple operations can get very tricky. Let's discuss some of them, starting with subtraction.

Exercise

For a character named 'Mnah', select the name, weight, height, and the result of the following calculation:

weight - height - weight + height AS zero

It should equal 0, right?

Stuck? Here's a hint!

Introduce a WHERE clause, and remember to put the character name in apostrophes.