-- Lossy revert: this removes the three Custom access permissions, which the legacy schema cannot -- represent at all. The revert therefore -- requires the same acknowledgement as 2026-07-24-140000/down.sql -- which only announces the loss, -- it does not authorize it. Create the marker table while every Vaultwarden instance is stopped: -- -- CREATE TABLE __vw_allow_custom_role_downgrade (acknowledged INTEGER NOT NULL PRIMARY KEY); CREATE TEMPORARY TABLE __vw_custom_role_downgrade_guard ( blocked INTEGER NOT NULL PRIMARY KEY ); INSERT INTO __vw_custom_role_downgrade_guard (blocked) VALUES (1); -- The duplicate key aborts the revert. It is only inserted while the acknowledgement is absent. INSERT INTO __vw_custom_role_downgrade_guard (blocked) SELECT 1 FROM DUAL WHERE NOT EXISTS ( SELECT 1 FROM information_schema.tables WHERE table_schema = DATABASE() AND table_name = '__vw_allow_custom_role_downgrade' ); -- `DROP TEMPORARY TABLE`, not `DROP TABLE`: the latter is one more statement that commits -- implicitly on MySQL/MariaDB, and it would happily drop a permanent table of the same name. DROP TEMPORARY TABLE __vw_custom_role_downgrade_guard; -- One ALTER, not three. Each `ALTER TABLE` commits implicitly on MySQL/MariaDB, so three statements -- mean two intermediate states that survive a failure while Diesel still considers the migration -- unapplied; one statement is the closest this backend gets to all-or-nothing. ALTER TABLE users_organizations DROP COLUMN access_event_logs, DROP COLUMN access_import_export, DROP COLUMN access_reports;