-- 回滚沉默期延期相关 5 张表（会丢失延期订单、延期记录等业务事实，仅限测试环境演练）。
DROP TABLE IF EXISTS tb_package_silence_extension_order;
DROP TABLE IF EXISTS tb_package_silence_extension;
DROP TABLE IF EXISTS tb_package_silence_extension_batch;
DROP TABLE IF EXISTS tb_package_silence_record;
DROP TABLE IF EXISTS tb_package_silence_extension_policy;