DROP INDEX IF EXISTS idx_designations_department_id; DROP INDEX IF EXISTS idx_designations_is_active; DROP INDEX IF EXISTS idx_designations_code_unique; ALTER TABLE designations DROP COLUMN IF EXISTS updated_at, DROP COLUMN IF EXISTS is_active, DROP COLUMN IF EXISTS can_approve, DROP COLUMN IF EXISTS can_manage_team, DROP COLUMN IF EXISTS level, DROP COLUMN IF EXISTS description, DROP COLUMN IF EXISTS department_id, DROP COLUMN IF EXISTS code;