Send an the generated query from an Ecto.Query to a postgres function

[david_ex]

Based on How to do multi selects in Ecto, using a subquery may help?

Something like:

var = 0                                             
query = from t0 in "table", where: t0<^var, select: t0
Repo.all(from q in subquery(query), select: fragment("postgress_function(?)", ^q))