-- 表名与 api/model 中 tableName 一致：biz_user、biz_plans、biz_subscriptions、biz_api_token、biz_usage_monthly、biz_audit_log
-- 已有库若 `created_at` / `updated_at` 无默认值，插入会失败（模型已关闭 Sequelize timestamps 且未声明时间字段时依赖库默认值）。
-- 按需对已有表执行（新库直接执行 001/003 即可，无需本文件）。

SET NAMES utf8mb4;

ALTER TABLE `biz_user`
  MODIFY `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  MODIFY `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP;

ALTER TABLE `biz_plans`
  MODIFY `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  MODIFY `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP;

ALTER TABLE `biz_subscriptions`
  MODIFY `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  MODIFY `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP;

ALTER TABLE `biz_api_token`
  MODIFY `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  MODIFY `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP;

ALTER TABLE `biz_usage_monthly`
  MODIFY `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  MODIFY `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP;

ALTER TABLE `biz_audit_log`
  MODIFY `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP;
