> Oh, I see. Thanks for clarifying! You mentioned it was merged. Does this mean it'll land in stable soon? It has been merged into the master branch, which'll

> Oh, I see. Thanks for clarifying! You mentioned it was merged. Does this mean it'll land in stable soon? It has been merged into the master branch, which'll become PostgreSQL 11. First beta will be in a few weeks. Release is planned to be in September (early I'd hope). > Will it be behind a flag, or does the planner just know when to use it? There's cost based logic that chooses it, yes. See https://www.postgresql.org/docs/devel/static/jit-decision.html https://www.postgresql.org/docs/devel/static/jit-decision.ht... You can change those if you want to force JIT on/off.