Total Users Count
How many users are registered on the product platform?
- Aggregation
Challenge brief
Understand the request
Growth Analytics needs a single headline number — total registered users — for the weekly executive dashboard.
Return total_users in the declared deterministic order.
Return
- total_users
Constraints
- Return one row with the total registered-user count
Data you will use
Review the relevant tables before deciding how to join, filter, or aggregate them.
users
user_idINTEGERcountryVARCHAR(50)device_typeVARCHAR(20)signup_dateDATE
Hints, when you need them
Open one clue at a time so you still do the reasoning.
Hint 1
The answer comes from the registered-user table.
Hint 2
Count rows at the table grain.
Hint 3
Return the count under the requested alias.
Verified SQL answer
Attempt the problem first, then compare structure and reasoning—not just syntax.
Reveal solution and explanation
SELECT COUNT(*) AS total_users FROM usersWhy this works
COUNT(*) counts every row in the table. No WHERE or GROUP BY needed — you want the grand total. There are 23 users in the dataset.
Success check
Returns the complete deterministic result for total users count
Expected result
Use this output to verify values, aliases, ordering, and row count.
| total_users |
|---|
| 24 |
Learn the concepts behind this answer
Strengthen your understanding with these targeted learning topics:
Continue practicing
Explore related company challenges
Meta
Independent Meta-style social-product, engagement, content, community, messaging, and advertising SQL practice.
Microsoft
Independent Microsoft-style cloud, productivity, subscription, usage, support, and customer analytics SQL practice.
Netflix
Independent Netflix-style streaming, subscription, catalog, ratings, and engagement SQL practice.
Return to the complete interview preparation experience.