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5 articles
A 47-second Postgres query took 120ms on ClickHouse. Columnar storage, vectorized execution, and why your analytics belong in OLAP.
Polars is 8.7x faster than pandas. DuckDB is 9.4x faster. Both handle larger-than-RAM data. Here's when to use each — with benchmarks.
AI automated 30-40% of the old analyst job. The remaining 60% pays better than ever. Here is what the role actually looks like now.
A 20-week roadmap to become a data analyst: SQL, Python, BI tools, AI integration, portfolio strategy, and what interviews actually test.
One writes SQL at 2 AM. The other rewrites the requirements doc at 2 AM. Both make $90K+. Here is how to pick.