上传源代码版本

unclaimed-count-debug.sql

@@ -0,0 +1,46 @@
+-- 总无人认领数统计（单独查询，用于排查）
+-- 逻辑：扫描历史记录中CustomerId为0的，有扫描记录的订单数（去重）
+
+WITH 
+-- 步骤1：获取所有CustomerId为0的扫描记录
+UnclaimedScans AS (
+    SELECT 
+        s.NeutralWaybillNumber,
+        s.CustomerId,
+        DATE(CONVERT_TZ(s.CreatedAt, '+00:00', '-05:00')) AS 扫描日期,
+        s.CreatedAt AS 扫描时间,
+        s.Result,
+        s.Description
+    FROM label_scan_history s
+    WHERE s.CustomerId = 0
+),
+
+-- 步骤2：每个中性面单号每天取最新一条记录
+DailyUnclaimedDistinct AS (
+    SELECT 
+        NeutralWaybillNumber,
+        扫描日期,
+        扫描时间,
+        Result,
+        Description,
+        ROW_NUMBER() OVER (PARTITION BY NeutralWaybillNumber, 扫描日期 ORDER BY 扫描时间 DESC) AS rn
+    FROM UnclaimedScans
+),
+
+-- 步骤3：统计每日总无人认领数（去重）
+DailyUnclaimedCount AS (
+    SELECT 
+        扫描日期,
+        COUNT(DISTINCT NeutralWaybillNumber) AS 总无人认领数
+    FROM DailyUnclaimedDistinct
+    WHERE rn = 1
+    GROUP BY 扫描日期
+)
+
+-- 最终查询结果
+SELECT 
+    扫描日期 AS 日期,
+    总无人认领数,
+    (UTC_TIMESTAMP() - INTERVAL 5 HOUR) AS 数据拉取时间（UTC_5）
+FROM DailyUnclaimedCount
+ORDER BY 扫描日期 DESC;