Hi,
I have trouble calling following custom function from GraphQL:

CREATE FUNCTION images_in_cell(wall uuid, gridX integer, gridY integer)
RETURNS SETOF images AS $$
    SELECT *
    FROM images
    WHERE
      wall_id = wall AND
      FLOOR(x / 1000 + width / 2) = gridX AND
      FLOOR(y / 1000 + height / 2) = gridY
$$ LANGUAGE sql STABLE;

This is the query I try to submit:

query {
  images_in_cell(args:{wall: "8e3e4a14-c831-45a2-9e78-8e86028d1ee5", gridx:1, gridy:1}) {
    id
  }
}

Here the GraphiQL editor complains that it expected type Int! for the "wall" argument. If I run the query, I get following result:

{
  "errors": [
    {
      "extensions": {
        "path": "$.selectionSet.images_in_cell.args.args.gridy",
        "code": "parse-failed"
      },
      "message": "A string is expected for type : uuid"
    }
  ]
}

It seems like Hasura mixes up the argument types of wall and gridy.

I just updated Hasura to version v1.0.0-alpha41 and I am running it with PostgreSQL 11.2 using the docker-compose file provided in your quickstart documentation.
If you need any other information or want me to try something else, feel free to ask! I would also be very glad for any workaround.

Edit:
After getting some help in the discord channel: It works if I move the wall argument to the end of the argument list of my function.