完善小细节

tradeCattle/debug_field_length_issue.sql

@@ -0,0 +1,45 @@
+-- 检查xq_client_log表的所有字段长度
+-- 找出导致Data truncation的真正原因
+
+-- 1. 检查所有字段的长度限制
+SELECT 
+    COLUMN_NAME,
+    DATA_TYPE,
+    CHARACTER_MAXIMUM_LENGTH,
+    NUMERIC_PRECISION,
+    NUMERIC_SCALE,
+    IS_NULLABLE,
+    COLUMN_DEFAULT
+FROM INFORMATION_SCHEMA.COLUMNS 
+WHERE TABLE_SCHEMA = DATABASE() 
+AND TABLE_NAME = 'xq_client_log'
+ORDER BY ORDINAL_POSITION;
+
+-- 2. 检查iot_device_data表中的实际数据长度
+SELECT 
+    device_id,
+    device_type,
+    LENGTH(CAST(voltage AS CHAR)) as voltage_length,
+    LENGTH(CAST(temperature AS CHAR)) as temp_length,
+    LENGTH(CAST(latitude AS CHAR)) as lat_length,
+    LENGTH(CAST(longitude AS CHAR)) as lng_length,
+    LENGTH(CAST(steps AS CHAR)) as steps_length,
+    voltage,
+    temperature,
+    latitude,
+    longitude,
+    steps
+FROM iot_device_data 
+WHERE device_type = 4 
+ORDER BY update_time DESC
+LIMIT 10;
+
+-- 3. 检查是否有其他可能超长的字段
+SELECT 
+    COLUMN_NAME,
+    CHARACTER_MAXIMUM_LENGTH
+FROM INFORMATION_SCHEMA.COLUMNS 
+WHERE TABLE_SCHEMA = DATABASE() 
+AND TABLE_NAME = 'xq_client_log'
+AND CHARACTER_MAXIMUM_LENGTH IS NOT NULL
+AND CHARACTER_MAXIMUM_LENGTH < 1000;