-- The node row keeps no digest of a send, nor when it was made (novox/hq ADR 0539 §5, §9, §17, issue 1945).
--
-- A machine is not sent a declaration, so nothing records one: whether a machine has what is wanted of it is read from its
-- haves beside the assigner's wants, a given value is replaced when a have of its module is first running and healthy, and the
-- bus's user list is part of the bus module's composition, which the bus machine's have names or does not. This drops what
-- the last readers of a send's record read: node.sent and node.sent_at (0014), and node.sent_bus_users (0058). **It is
-- one-way**, as 0108 and 0109. node.sent_provisioning stays: it holds the provisioner's plans of each composition
-- (inventory.RecordComposedPlans).
alter table node drop column if exists sent;
alter table node drop column if exists sent_at;
alter table node drop column if exists sent_bus_users;