Intolerable

Results 2 issues of Intolerable

Is it possible to construct a LEFT JOIN LATERAL query using beam? I've tried to combine `lateral_` and `leftJoin_` (and `subselect_`) in a few different ways but I couldn't figure...

As mentioned by @ocharles [here](https://www.reddit.com/r/haskell/comments/o3cep5/video_ollie_charles_rel8_a_new_database_access/h2o049n/?context=3), it's not yet possible to select from a function result. This is something that will be fairly critical for constructing more complex JSON-related queries.