Interview Questions
Interview Guides
Experiences
Explore
Get started
Sign in
Interview Guides
All questions
/
SQL & Data Manipulation
SQL Duplicate Detection Query
Medium
Asked at 1 company
Data Wrangling
Group By
Aggregations
Problem
How would you identify duplicate records in a dataset with millions of rows using SQL?
Question
Answer
Problem
How would you identify duplicate records in a dataset with millions of rows using SQL?
Your answer
Edit
Preview
Try one AI text evaluation on us
Get structured feedback, scored against a 4-axis rubric. Premium unlocks unlimited.
0 words
target ~200
Try a free preview
Stuck? Get a hint
Past attempts
Up next
SQL Duplicate Detection at Scale
Medium
SQL Duplicate Detection
Medium
SQL Duplicate Transactions Detection
Medium
Next question
SQL Duplicate Detection Query | Dataford Interview Questions