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This question was asked in Facebook interview, Ask is to give page recommendation for user1 based on Friendship and Likes. Source: LeetCode Difficulty: Medium Company: Facebook Page Recommendations Q. Write …
Company: BlackRock CTC: 26LPA Source: Linked Post Q. Retrieve the name of the manager who supervises the most employees. Solution: Explanation: Here, we want to find out the manager who supervises …
Company: BlackRock CTC: 26LPA Source: Linked Post Q: Write a query to calculate the median salary of employees in a table. Solution: Explanation: Here we need to find out the …
Query: SELECT product_id FROM sales GROUP BY product_id HAVING COUNT(DISTINCT region_id) = (SELECT COUNT(*) FROM regions); Explanation: We need to find products that have been sold in all regions. This …