81 lines
1.7 KiB
Markdown
81 lines
1.7 KiB
Markdown
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---
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#领域/物联实验室
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#复盘/0 #临时/备忘
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## 一句话描述
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[___Dataease 配置数据集_____]
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---
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### 今日人流量
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```mysql
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SELECT
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-- 给重名字段起别名，避免查询结果字段冲突
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-- c1.InNum AS c1_InNum,
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-- c1.OutNum AS c1_OutNum,
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-- c2.InNum AS c2_InNum,
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-- c2.OutNum AS c2_OutNum,
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c1.InNum + c2.InNum as innum,
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c1.OutNum + c2.OutNum as outnum
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FROM
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(SELECT InNum, OutNum FROM people WHERE deviceid = 'AG00897PAGF39E1' ORDER BY DataDateTime desc limit 1) AS c1
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LEFT JOIN
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(SELECT InNum, OutNum FROM people WHERE deviceid = 'AG00897PAG81E9C' ORDER BY DataDateTime desc limit 1) AS c2
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-- 核心修复：添加LEFT JOIN连接条件（根据业务逻辑选择）
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ON 1= 1;
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```
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### 本周人流量
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```mysql
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SELECT
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ROUnD(SUM(InNum + OutNum) / 1.5) AS 本周总人流量
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FROM (
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-- 每个设备只取 1 条最新记录（累计值不会重复）
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SELECT deviceId, MAX(InNum) AS InNum, MAX(OutNum) AS OutNum
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FROM people
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WHERE YEARWEEK(DataDateTime, 1) = YEARWEEK(NOW(), 1)
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GROUP BY deviceId
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) AS t;
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```
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### 环境平均
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```mysql
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SELECT
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DATE_FORMAT(Time, '%y/%m/%d') AS month_day,
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AVG(Temperature) AS Temperature,
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AVG(Humidity) AS Humidity,
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AVG(TVOC) AS TVOC,
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AVG(eCO2) AS eCO2,
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AVG(PM10) AS PM10,
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AVG(PM2_5) AS PM2_5
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FROM
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env
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GROUP BY
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month_day
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ORDER BY
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month_day desc limit 30;
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```
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### 环境
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```mysql
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select * from env order by id desc limit 1;
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```
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### 行为数据
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```mysql
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SELECT * from (
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select * from (SELECT
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DataDateTime,
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"人流经过" AS 行为
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FROM
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people
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WHERE
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type = '1' order by DataDateTime desc) as t1
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UNION ALL
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select * from (SELECT `datetime`, `msg` from log where `msg`!='物联控制' and `msg`!="") as t2
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) as t1_2 ORDER BY DataDateTime desc limit 20;
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```
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