Duplicate Job Listings
Find companies that have posted duplicate job listings — same title and description. Return the count of companies with duplicates.
Tables: job_listings
SQL practice / LinkedIn
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LinkedIn SQL interview questions. All free.
2 SQL practice questions in our LinkedIn collection, part of our 188-question bank across 23 companies. Write SQL against practice datasets and get checked in your browser. Free, no card or trial.
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Inside the LinkedIn set
SQL topics you can practice.
These topics come from the questions in this set. Pick one to open the matching problems.
Data Science Skills
Find candidates who are proficient in Python, SQL, and Statistics. Return candidate_ids who have all three skills, ordered by candidate_id.
Tables: candidates
The bank
LinkedIn SQL questions. Start typing SQL.
2 LinkedIn problems, each with its own dataset. Click one and you’re in the workspace, free, right in your browser.
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Your dataset
job_listings
job_id (INTEGER) · company_id (INTEGER) · title (VARCHAR) · description (TEXT)
2
LinkedIn questions
188
questions in the full bank
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Practice LinkedIn SQL freeExplore SQL questions by company.
188 SQL practice questions. 23 companies. Free access to every problem.