query-plans

JetBrains DataGrip SQL Premium - Desktop package for Windows with a smooth setup flow and the full pro toolkit included.

Interactive SQLite lab exposing parameter-sensitive query plans hidden behind one healthy fingerprint.

DataFusion EXPLAIN and EXPLAIN ANALYZE query plan output rendered as Excalidraw diagrams

Deterministic offline PostgreSQL EXPLAIN JSON regression gate

Audit filtered pgvector HNSW recall, latency, and query-plan correctness against exact PostgreSQL search.

Measured benchmark of pgvector HNSW recall collapse under WHERE filters — selectivity cliff, iterative_scan cost, and the btree crossover the planner misses.