fix: db

scripts/shift-old-datetimes-minus-8h.sql

@@ -0,0 +1,34 @@
+-- Only devices.* times. Dashboard / daily-report device counts use created_at
+-- (and updated_at for「活跃」). Do not touch photos / visits / other tables.
+--
+-- 1) 备份 devices
+-- 2) 把 @cutoff 改成切时区那一刻
+-- 3) 先预览，再 START TRANSACTION … COMMIT
+-- 4) 提交后：php artisan coruna:daily-stats --all
+
+SET time_zone = '+08:00';
+SET @cutoff = '2026-09-16 14:00:00';  -- TODO: 改成实际切时区的时间
+
+SELECT 'created_at' AS col, COUNT(*) AS n, MIN(created_at) AS mn, MAX(created_at) AS mx
+  FROM devices WHERE created_at IS NOT NULL AND created_at < @cutoff
+UNION ALL SELECT 'updated_at', COUNT(*), MIN(updated_at), MAX(updated_at)
+  FROM devices WHERE updated_at IS NOT NULL AND updated_at < @cutoff
+UNION ALL SELECT 'first_seen_at', COUNT(*), MIN(first_seen_at), MAX(first_seen_at)
+  FROM devices WHERE first_seen_at IS NOT NULL AND first_seen_at < @cutoff
+UNION ALL SELECT 'last_seen_at', COUNT(*), MIN(last_seen_at), MAX(last_seen_at)
+  FROM devices WHERE last_seen_at IS NOT NULL AND last_seen_at < @cutoff;
+
+START TRANSACTION;
+
+UPDATE devices SET created_at = DATE_SUB(created_at, INTERVAL 8 HOUR)
+ WHERE created_at IS NOT NULL AND created_at < @cutoff;
+UPDATE devices SET updated_at = DATE_SUB(updated_at, INTERVAL 8 HOUR)
+ WHERE updated_at IS NOT NULL AND updated_at < @cutoff;
+UPDATE devices SET first_seen_at = DATE_SUB(first_seen_at, INTERVAL 8 HOUR)
+ WHERE first_seen_at IS NOT NULL AND first_seen_at < @cutoff;
+UPDATE devices SET last_seen_at = DATE_SUB(last_seen_at, INTERVAL 8 HOUR)
+ WHERE last_seen_at IS NOT NULL AND last_seen_at < @cutoff;
+
+-- 后台看一台改时区前的设备，时间对了再 COMMIT
+COMMIT;
+-- ROLLBACK;