- perf: btree range scans for WHERE Gt/Lt/Gte/Lte/Between
- perf: index-only aggregates without GROUP BY
- perf: index-only GROUP BY for AVG/SUM/MIN/MAX
- perf: start-variable GROUP BY fast path in MATCH
- feat: = ANY($1) PostgreSQL-style dynamic array IN binding
- feat: @> PostgreSQL-compatible array containment operator
- feat: EXPLAIN / EXPLAIN ANALYZE query plan introspection