Architect's Guide
Sep 30, 2026 · Databases
10 Advanced SQL Techniques for Data Science Interviews
This article explains ten advanced SQL concepts including CTEs, recursive queries, temporary functions, pivoting with CASE WHEN, EXCEPT vs NOT IN, self-joins, ranking functions, delta calculations with LEAD/LAG, running totals, and datetime manipulation, with code examples for data science interview preparation.
CTEDateTime ManipulationPivoting
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