-- 回滚：将实名认证策略的列默认值恢复为 none（无需实名）

ALTER TABLE tb_iot_card
    ALTER COLUMN realname_policy SET DEFAULT 'none';

ALTER TABLE tb_device
    ALTER COLUMN realname_policy SET DEFAULT 'none';

ALTER TABLE tb_iot_card_import_task
    ALTER COLUMN realname_policy SET DEFAULT 'none';

ALTER TABLE tb_device_import_task
    ALTER COLUMN realname_policy SET DEFAULT 'none';
