Log inStart free
← SQL & Databases
#13 most askedVery commonEasyJoins

Number of Orders per Customer (Including Zero)

New to Joins? Learn it from scratch first
Combining Tables with JOIN →
🏢 Asked in real interviews
No reports yet. Were you asked this? Be the first to say where.
I was asked this

Unlock “Number of Orders per Customer (Including Zero)”

Plus 1,080 more interview questions with step-through solutions and 36 advanced lessons in algorithms, systems and system design.

$39/yearabout 11¢ a day · one payment, no monthly billsLeetCode Premium alone is $159/year.
See everything included

🛡️ 14-day money-back guarantee. Already a member? Log in