103 lines
3.0 KiB
SQL
103 lines
3.0 KiB
SQL
-- ====================================
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-- 步骤2：检查iot_device_data表中的实际数据
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-- ====================================
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-- 2.1 检查项圈设备数据（device_type=4）
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SELECT
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device_id as '设备ID',
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device_type as '设备类型',
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voltage as '电压',
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temperature as '温度',
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steps as '步数',
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same_day_steps as '当日步数',
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latitude as '纬度',
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longitude as '经度',
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server_device_id as '主机设备ID',
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update_time as '更新时间'
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FROM iot_device_data
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WHERE device_type = 4
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ORDER BY update_time DESC
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LIMIT 10;
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-- 2.2 检查耳标设备数据（device_type=2）
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SELECT
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device_id as '设备ID',
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device_type as '设备类型',
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voltage as '电压',
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temperature as '温度',
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steps as '步数',
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same_day_steps as '当日步数',
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latitude as '纬度',
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longitude as '经度',
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server_device_id as '主机设备ID',
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update_time as '更新时间'
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FROM iot_device_data
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WHERE device_type = 2
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ORDER BY update_time DESC
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LIMIT 10;
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-- 2.3 检查主机设备数据（device_type=1）
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SELECT
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device_id as '设备ID',
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device_type as '设备类型',
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voltage as '电压',
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temperature as '温度',
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latitude as '纬度',
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longitude as '经度',
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update_time as '更新时间'
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FROM iot_device_data
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WHERE device_type = 1
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ORDER BY update_time DESC
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LIMIT 10;
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-- 2.4 检查所有字段的最大长度
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SELECT
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'项圈设备' as '设备类型',
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'latitude' as '字段名',
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MAX(LENGTH(CAST(latitude AS CHAR))) as '最大长度',
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MAX(CHAR_LENGTH(CAST(latitude AS CHAR))) as '最大字符长度'
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FROM iot_device_data WHERE device_type = 4
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UNION ALL
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SELECT
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'项圈设备' as '设备类型',
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'longitude' as '字段名',
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MAX(LENGTH(CAST(longitude AS CHAR))) as '最大长度',
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MAX(CHAR_LENGTH(CAST(longitude AS CHAR))) as '最大字符长度'
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FROM iot_device_data WHERE device_type = 4
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UNION ALL
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SELECT
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'项圈设备' as '设备类型',
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'voltage' as '字段名',
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MAX(LENGTH(CAST(voltage AS CHAR))) as '最大长度',
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MAX(CHAR_LENGTH(CAST(voltage AS CHAR))) as '最大字符长度'
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FROM iot_device_data WHERE device_type = 4
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UNION ALL
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SELECT
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'项圈设备' as '设备类型',
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'temperature' as '字段名',
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MAX(LENGTH(CAST(temperature AS CHAR))) as '最大长度',
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MAX(CHAR_LENGTH(CAST(temperature AS CHAR))) as '最大字符长度'
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FROM iot_device_data WHERE device_type = 4
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UNION ALL
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SELECT
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'项圈设备' as '设备类型',
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'server_device_id' as '字段名',
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MAX(LENGTH(server_device_id)) as '最大长度',
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MAX(CHAR_LENGTH(server_device_id)) as '最大字符长度'
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FROM iot_device_data WHERE device_type = 4;
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-- 2.5 检查设备数量
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SELECT
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device_type as '设备类型',
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CASE device_type
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WHEN 1 THEN '主机'
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WHEN 2 THEN '耳标'
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WHEN 4 THEN '项圈'
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ELSE '未知'
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END as '设备类型名称',
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COUNT(*) as '设备数量'
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FROM iot_device_data
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WHERE device_type IN (1, 2, 4)
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GROUP BY device_type;
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