Extensions to Ecto's query DSL.

Import this module to make various macros available wrapping the raw PostgreSQL API for dealing with large objects.

This permits operating on large objects in bulk as part of SQL queries. For example

import Ecto.Query
import PgLargeObjects.EctoQuery

# Delete all data uploaded by a given user.
from(upload in Upload,
  where: upload.user_id == ^user_id,
  select: lo_unlink(upload.object_id)
) |> Repo.all()

See the PostgreSQL documentation at https://www.postgresql.org/docs/current/lo-interfaces.html for a discussion of these functions.