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Uber
User's Third Transaction
Snapchat
Sending vs. Opening Snaps
Twitter
Tweets' Rolling Averages
Amazon
Highest-Grossing Items
Spotify
Top 5 Artists
TikTok
Signup Activation Rate
Microsoft
Supercloud Customer
Google
Odd and Even Measurements
Walmart
Histogram of Users and Purchases
Alibaba
Compressed Mode
JPMorgan Chase
Card Launch Success
Verizon
International Call Percentage
UnitedHealth
Patient Support Analysis (Part 2)
Bloomberg
FAANG Stock Min-Max (Part 1)
Refer Friends To Unlock More Questions
Percentage Calculations7
Array Functions1
bball0
Date-Time Functions12
Mathematical Functions9
fun-run0
Aggregate Functions33
Ace the Data Science Interview15
Data Type Conversion12
Data Generation Functions0
Window Functions11
The-Office-SQL0
Set Operations8
Null Handling4
Conditional Expression14
Top N Results5
Control Flow Functions1
Arithmetic Operators1
Existence Check6
Conditional Logic9
Common Table Expressions (CTE) or Subquery12
String Functions2
Distinct and Unique Handling8
User Behavior6