-- 运输时效：一产品一国国家 + 考核总时效；规则主体按 AppKey 方案级
-- 执行前请备份 t_warning / t_warning_transport_scene

-- 1) 国家列（若已存在可跳过）
ALTER TABLE t_warning_transport_scene
    ADD COLUMN CountryCode VARCHAR(16) NULL COMMENT '到达国家二字码（单一，命中订单到达国家）' AFTER ProductCode;

-- 2) 考核总时效（小时）
ALTER TABLE t_warning_transport_scene
    ADD COLUMN AssessmentTotalTimeSpan FLOAT NULL COMMENT '考核总时效（小时；前端按天录入后×24入库）' AFTER CountryCode;

-- 3) 运输时效规则主体改为方案级：客户清空
UPDATE t_warning
SET Customer = ''
WHERE WarningType = 1
  AND (Customer IS NULL OR Customer <> '');

-- 4) 同一 AppKey 下多个已启用运输时效方案，仅保留 Id 最小的一条
UPDATE t_warning w
    INNER JOIN (
        SELECT AppKey, MIN(Id) AS KeepId
        FROM t_warning
        WHERE WarningType = 1
          AND IsEnabled = 1
        GROUP BY AppKey
        HAVING COUNT(1) > 1
    ) d ON w.AppKey = d.AppKey
SET w.IsEnabled = 0
WHERE w.WarningType = 1
  AND w.IsEnabled = 1
  AND w.Id <> d.KeepId;