Linkedin Data Manipulation (SQL/Python) Interview Questions
Practice the exact questions companies are asking right now.
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Write SQL for rankings, state, and aggregations
You are given several independent datasets. For each dataset, write the required SQL query (ANSI SQL is fine). Assume dates are in UTC and DATE column...
Analyze member video posting behavior by country
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Compute each member’s current notification status
You have two tables describing LinkedIn members’ push notification settings. Tables status — each member’s latest setting as of 2020-01-31 - member_id...
Compute article-type diversity per user and histogram
You track article views and article metadata. Tables article_views - user_id INT - article_id INT - view_date DATE articles - article_id INT (PK) - ar...
Find top countries by population per continent
Table world_population - continent VARCHAR - country VARCHAR - population BIGINT Assume each row is a country’s latest population and (continent, coun...
Determine Final Notification Status
You are given two tables that describe LinkedIn members' push-notification settings. status(member_id INT, status VARCHAR) - Contains each member's la...
[SQL] Job Ad Metrics with Applicant Filter
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Determine current notification status
You are given two tables about members' push-notification settings. Table 1: status_snapshot - member_id INT - status STRING — either 'on' or 'off' Th...
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Table: article_views article_id INT author_id INT viewer_id INT view_dt DATE Count authors who have never viewed any of their own articles. On 20...
Find top countries per continent
You are given a table world_population that contains one row per country for a single population snapshot. Schema: - continent STRING - country STRING...
Analyze Video Posting Activity
You are given two tables about user video uploads. video_posts(post_date DATE, member_id INT, video_length INT) - One row per uploaded video. - video_...
Analyze video posting activity
You are given two tables about members and video uploads. Table 1: video_posts - post_date DATE — UTC calendar date of the upload - member_id INT - vi...
Count viewed article types
You are given two tables about article views. Table 1: article_views - user_id INT - article_id INT - view_date DATE — UTC calendar date of the view T...
Find Top Countries per Continent
You are given a country population snapshot table: world_population(continent VARCHAR, country VARCHAR, population BIGINT) Each row represents the lat...
Count Article Types Viewed
You are given article view events and article metadata. article_views(user_id INT, article_id INT, view_date DATE) - One row per article view event. a...
Identify and Flag Bot Traffic in Online Forum
PVE +----------+-----------+ | memberId | timestamp | +----------+-----------+ | 101 | 169100123 | | 102 | 169100225 | | 101 | 16910030...
Identify Top Contributors by Recent Post Count
posts +----+---------+---------------------+ | id | user_id | created_at | +----+---------+---------------------+ | 1 | 101 | 2023-09-01...