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SQL Interview Questions

Writing SQL queries is KEY to Acing the Data Science Interview, but if you want to go beyond SQL join our FREE
9-Day Interview Crash Course! (which covers Probability, Statistics, ML, Coding, & Product-Sense).

CompanyTitleDifficultyStatus

LinkedIn

Data Science Skills

Easy

Facebook

Page With No Likes

Easy

Tesla

Unfinished Parts

Easy

New York Times

Laptop vs. Mobile Viewership

Easy

Linkedin

Duplicate Job Listings

Easy

Facebook

Average Post Hiatus (Part 1)

Easy

Microsoft

Teams Power Users

Easy

Robinhood

Cities With Completed Trades

Easy

Amazon

Average Review Ratings

Easy

Facebook

App Click-through Rate (CTR)

Easy

TikTok

Second Day Confirmation

Easy

JPMorgan Chase

Cards Issued Difference

Easy

Alibaba

Compressed Mean

Easy

CVS Health

Pharmacy Analytics (Part 1)

Easy

CVS Health

Pharmacy Analytics (Part 2)

Easy

CVS Health

Pharmacy Analytics (Part 3)

Easy

UnitedHealth

Patient Support Analysis (Part 1)

Easy

UnitedHealth

Patient Support Analysis (Part 2)

Easy

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Tags

Calculate Rates7

Array Functions2

Minimum/Maximum4

Date-Time Operations13

Mathematical Functions3

Aggregations24

Ace the Data Science Interview15

Type Conversion12

Categorize Data15

Window Functions12

Top X5

Existence Check5

Cumulative Sums0

SQL Series1

Conditional Aggregation8

String Functions2

Unique Results8

User Behavior5