StarRocks

Nov 5, 2025 · Databases

How FlatJSON Transforms JSON Queries in StarRocks 4.0 for Near‑Columnar Performance

StarRocks 4.0 introduces FlatJSON, a columnar storage and execution engine that converts high‑frequency JSON fields into native columns, dramatically reducing I/O and CPU costs and enabling JSON queries to run with performance close to that of traditional columnar data.