Constant all_columns

pub const all_columns: (uuid, updt, ver, updu, currency, issued_date, items, due_date, number, amount, tax, issuer, issuer_org, payer, payer_org, attachments, rstatus, invoice_status, user_id, payment_gateway, project, payment_plan, discounts_applied, entity_id, item_id, confirmation_status);

A tuple of all of the columns on this table