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Mastering DuckDB: The Fast In-Process OLAP Database for Serverless Analytics

October 7, 2026

Analyze large CSV and Parquet files instantly without spinning up database servers. This tutorial demonstrates how DuckDB provides serverless, in-process OLAP performance for fast local analytics and cross-source queries.

Database

Mastering SQL Window Functions: Real-World Guide to ROW_NUMBER, RANK, LEAD, and LAG

October 4, 2026

Learn how to use SQL window functions like ROW_NUMBER, RANK, LEAD, and LAG to debug real-world production incidents, deduplicate records, and compute running analytics efficiently.