Practice 15 SQL interview questions tailored to e-commerce and marketplace data science roles. Covers customer analytics, product ranking, funnel queries, seller metrics, and time-based business ...
Master every SQL window function pattern tested in data science interviews. 14 worked problems covering ROW_NUMBER, RANK, DENSE_RANK, LAG, LEAD, running totals, NTILE, and complex multi-window queries ...
A comprehensive SQL practice repository featuring real-world Oracle Database sample schemas with exam questions, detailed solutions, and learning resources for SQL mastery. This repository contains ...
Welcome to my SQL interview prep journey! This repository documents my progress as I work through 196 real SQL interview questions sourced from top tech companies like Amazon, Google, Walmart, ...
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