Api.exists? raise an error when multiple result found

[pierrelegall]

Description

Given to the documentation of Api.exists?:

Wether or not the given query would return any results, raising any errors

However, it raise an error when multiple results are found.

To reproduce

# supposing you have multiple users
MyApp.Api.exists?(User)

Raise:

↳ AshPostgres.DataLayer.run_aggregate_query/3, at: lib/data_layer.ex:738
** (Ecto.MultipleResultsError) expected at most one result but got 5 in query:

from u0 in MyApp.User,
  as: 0,
  select: %{}

    (ecto 3.10.3) lib/ecto/repo/queryable.ex:154: Ecto.Repo.Queryable.one/3
    (ash_postgres 1.3.52) lib/data_layer.ex:738: AshPostgres.DataLayer.run_aggregate_query/3
    (ash 2.14.21) lib/ash/actions/aggregate.ex:59: anonymous fn/5 in Ash.Actions.Aggregate.run/4
    (elixir 1.15.6) lib/enum.ex:4830: Enumerable.List.reduce/3
    (elixir 1.15.6) lib/enum.ex:2564: Enum.reduce_while/3
    (djo 0.1.0) lib/djo/api.ex:1: MyApp.Api.exists?/2
    iex:36: (file)

Expected behavior

Api.exists? should return true if multiple results are found.

Runtime

• Elixir version: 1.15.6
• Erlang version: 26.1.1
• OS: Archlinux, Linux 6.5.5-arch1-1
• ash version: 2.15.10
• ash_postgres version: 1.3.52

[zachdaniel]

Something seems strange here for sure, will investigate. You're on the latest version of ash and ash_postgres?

[pierrelegall]

Yes, I currently use ash v2.15.10 and ash_postgres v1.3.52.