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Results for #window-functions
SQL Interview Questions for Data Engineering — Joins, GROUP BY, Window Functions, CTEs
The four SQL primitives that show up in every data engineering interview: LEFT JOIN anti-joins for orphan detection, GROUP BY with HAVING for duplicates, ROW_NUMBER vs RANK vs DENSE_RANK for top-N ranking, and CTE composition with recursive CTEs — with worked examples and full traces.
SQL Interview Questions 2026 — The Most Underrated Skill in AI Engineering
SQL is more important in the AI era than it was before it — feature stores, ML pipelines, LLM output analysis, and data quality validation all run on SQL. This covers window functions, recursive CTEs, ML-specific patterns, and 15 questions actually asked at Amazon, Meta, Uber, and more.
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