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

Window Functions

Introduction
Quick refresher
PARTITION BY ORDER BY with ranking
PARTITION BY ORDER BY with window frames
PARTITION BY ORDER BY with analytical functions
Summary
24. Exercise 3

Instruction

Fine! And finally, the last question.

Exercise

For each phone, show the following information: phone, day, the number of paid repairs, the number of paid repairs on the previous day and the difference between these two values.