Constant LOAD_PENDING_ACTIONS 

pub const LOAD_PENDING_ACTIONS: &str = "\
SELECT id, created_at, producer, action, payload, object_hash, attempts \
FROM queue WHERE collection = :collection AND error IS NULL ORDER BY id";

The owner’s drain: a collection’s pending (non-parked) actions, in append order. A reader runs the same statement to overlay pending actions on its item projection (read-your-writes, spec §15.4).