QuestDB 9.3.5 and QuestDB Enterprise 3.2.5 are out. Lateral joins land in QuestDB, UNNEST brings SQL-standard array and JSON expansion, and a new set of statistical window functions covers stddev, variance, covariance, and correlation. HORIZON JOIN now supports multiple right-hand-side tables in a single query, and SAMPLE BY gets corrected timezone handling during DST transitions (a breaking change worth reading about if you use timezones).
Full details at QuestDB 9.3.5: Lateral Joins, UNNEST & Window Stats | QuestDB