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SQL Interview Questions

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CompanyTitleDifficultyStatus

LinkedIn

Data Science Skills

Easy

Facebook

Page With No Likes

Easy

Tesla

Unfinished Parts

Easy

New York Times

Laptop vs Mobile Viewership

Easy

Robinhood

Cities With Completed Trades

Easy

Linkedin

Duplicate Job Listings

Easy

Paypal

Final Account Balance

Easy

Twitter

Histogram of Tweets

Easy

Amazon

Average Review Ratings

Easy

LinkedIn

LinkedIn Power Creators (Part 1)

Easy

eBay

Highest Number of Products

Easy

Microsoft

Spare Server Capacity

Easy

Facebook

Average Post Hiatus (Part 1)

Easy

Microsoft

Teams Power Users

Easy

PayPal

Unique Money Transfer Relationships

Easy

Google

Ad Campaign ROAS

Easy

Visa

Apple Pay Volume

Easy

Facebook

App Click-through Rate (CTR)

Easy

TikTok

Second Day Confirmation

Easy

Uber

User's Third Transaction

Medium

Accenture

Compensation Outliers

Medium

Snapchat

Sending vs. Opening Snaps

Medium

Twitter

Tweets' Rolling Averages

Medium

Google

Odd and Even Measurements

Medium

Walmart

Frequently Purchased Pairs

Medium

Amazon

Highest-Grossing Items

Medium

Etsy

First Transaction

Medium

LinkedIn

LinkedIn Power Creators (Part 2)

Medium

Spotify

Top 5 Artists

Medium

TikTok

Signup Confirmation Rate

Medium

Accenture

Fill Missing Client Data

Medium

Google

Consulting Bench Time

Medium

Spotify

Spotify Listening History

Medium

Twitter

User Session Activity

Medium

Etsy

Same Week Purchases

Medium

Google

Invalid Search Results

Medium

Yelp

Top Rated Businesses

Medium

Walmart

Histogram of Users and Purchases

Medium

Stitch Fix

Repeat Purchases on Multiple Days

Medium

Amazon

Purchasing Activity by Product Type

Medium

Adobe

Photoshop Revenue Analysis

Medium

Facebook

Active User Retention

Hard

Wayfair

Y-on-Y Growth Rate

Hard

Amazon

User Shopping Sprees

Hard

Visa

Monthly Merchant Balance

Hard

DoorDash

Bad Delivery Rate

Hard

Amazon

Server Utilization Time

Hard

Facebook

Reactivated Users

Hard

Google

2nd Level Managers

Hard

Amazon

Maximize Prime Item Inventory

Hard

Google

Median Google Search Frequency

Hard

Facebook

Advertiser Status

Hard

Airbnb

Matching Rental Amenities

Hard

Facebook

Weekly Churn Rates

Hard

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Tags

Calculate Rates10

Array Functions2

Minimum/Maximum2

Date-Time Operations21

Mathematical Functions1

Aggregations37

Ace the Data Science Interview26

Type Conversion13

Categorize Data30

Window Functions17

Top X6

Existence Check2

Cumulative Sums2

SQL Series1

Conditional Aggregation13

Unique Results11

User Behavior9

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