完善小细节

tradeCattle/check_data_length_analysis.sql

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+-- 检查iot_device_data表中的数据长度，找出导致截断的原因
+
+-- 1. 检查设备24075000139的数据
+SELECT 
+    device_id,
+    device_type,
+    voltage,
+    temperature,
+    latitude,
+    longitude,
+    steps,
+    same_day_steps,
+    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
+FROM iot_device_data 
+WHERE device_id = '24075000139' 
+AND device_type = 4;
+
+-- 2. 检查所有项圈设备的数据长度分布
+SELECT 
+    'voltage' as field_name,
+    MIN(LENGTH(CAST(voltage AS CHAR))) as min_length,
+    MAX(LENGTH(CAST(voltage AS CHAR))) as max_length,
+    AVG(LENGTH(CAST(voltage AS CHAR))) as avg_length
+FROM iot_device_data 
+WHERE device_type = 4 AND voltage IS NOT NULL
+
+UNION ALL
+
+SELECT 
+    'temperature' as field_name,
+    MIN(LENGTH(CAST(temperature AS CHAR))) as min_length,
+    MAX(LENGTH(CAST(temperature AS CHAR))) as max_length,
+    AVG(LENGTH(CAST(temperature AS CHAR))) as avg_length
+FROM iot_device_data 
+WHERE device_type = 4 AND temperature IS NOT NULL
+
+UNION ALL
+
+SELECT 
+    'latitude' as field_name,
+    MIN(LENGTH(CAST(latitude AS CHAR))) as min_length,
+    MAX(LENGTH(CAST(latitude AS CHAR))) as max_length,
+    AVG(LENGTH(CAST(latitude AS CHAR))) as avg_length
+FROM iot_device_data 
+WHERE device_type = 4 AND latitude IS NOT NULL
+
+UNION ALL
+
+SELECT 
+    'longitude' as field_name,
+    MIN(LENGTH(CAST(longitude AS CHAR))) as min_length,
+    MAX(LENGTH(CAST(longitude AS CHAR))) as max_length,
+    AVG(LENGTH(CAST(longitude AS CHAR))) as avg_length
+FROM iot_device_data 
+WHERE device_type = 4 AND longitude IS NOT NULL;
+
+-- 3. 检查xq_client_log表的当前字段长度
+SELECT 
+    COLUMN_NAME,
+    DATA_TYPE,
+    CHARACTER_MAXIMUM_LENGTH,
+    NUMERIC_PRECISION,
+    NUMERIC_SCALE
+FROM INFORMATION_SCHEMA.COLUMNS 
+WHERE TABLE_SCHEMA = DATABASE() 
+AND TABLE_NAME = 'xq_client_log'
+AND COLUMN_NAME IN ('latitude', 'longitude', 'device_voltage', 'device_temp', 'server_device_id', 'walk_steps', 'y_walk_steps');