A Hacker News post highlights the Stack Overflow Data Explorer, a tool for running custom SQL queries on Stack Exchange data. The featured query counts monthly questions since inception, demonstrating the platform's analytical capabilities.

The SQL snippet groups posts by creation month using DATEFROMPARTS, filtering for question posts (PostTypeId = 1). Results display question volume trends over time, with options for text-only output, execution plans, and CSV/XML exports.

Data Explorer supports parameterized queries, meta-site switching, and caching indicators. Users can fork queries, adjust parameters, and visualize results via graphs or raw data tables.

This resource enables developers to analyze programming trends, track technology adoption, and conduct research on the Stack Overflow knowledge base without direct database access.