randd/yudao-module-iot/yudao-module-iot-biz/src/main/resources/mapper/tdengine/TdEngineQueryMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="cn.iocoder.yudao.module.iot.dal.tdengine.TdEngineQueryMapper">

    <!-- 根据时间戳查询数据 -->
    <select id="selectByTimestamp" parameterType="cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.SelectDO"
            resultType="Map">
        SELECT * FROM ${dataBaseName}.${tableName}
        WHERE ${fieldName} BETWEEN #{startTime} AND #{endTime}
    </select>

    <!-- 获取时间范围内的数据条数 -->
    <select id="getCountByTimestamp" parameterType="cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.SelectDO"
            resultType="java.util.Map">
        SELECT COUNT(0) AS count
        FROM ${dataBaseName}.${tableName}
        WHERE ${fieldName} BETWEEN #{startTime} AND #{endTime}
    </select>

    <!-- 获取最新数据 -->
    <select id="getLastData" resultType="java.util.Map">
        SELECT LAST(time), *
        FROM ${tableName}
        WHERE device_id = #{deviceId}
    </select>

    <!-- 根据标签获取最新数据 -->
    <select id="getLastDataByTags" parameterType="cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.TagsSelectDO"
            resultType="Map">
        SELECT LAST(*)
        FROM ${dataBaseName}.${stableName}
        GROUP BY ${tagsName}
    </select>

    <!-- 获取历史数据 -->
    <select id="getHistoryData" resultType="java.util.Map"
            parameterType="cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.SelectVisualDO">
        SELECT ${fieldName} AS data, time
        FROM ${dataBaseName}.${tableName}
        WHERE time BETWEEN #{startTime} AND #{endTime}
          AND ${fieldName} IS NOT NULL
        ORDER BY time DESC
        LIMIT #{params.rows} OFFSET #{params.page}
    </select>

    <!-- 获取实时数据 -->
    <select id="getRealtimeData" resultType="java.util.Map"
            parameterType="cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.SelectVisualDO">
        SELECT ${fieldName}, time
        FROM ${dataBaseName}.${tableName}
    </select>

    <!-- 获取聚合数据 -->
    <select id="getAggregateData" resultType="java.util.Map"
            parameterType="cn.iocoder.yudao.module.iot.dal.dataobject.tdengine.SelectVisualDO">
        SELECT ${aggregate}(${fieldName})
        FROM ${dataBaseName}.${tableName}
        WHERE ts BETWEEN #{startTime} AND #{endTime} INTERVAL (${interval})
        LIMIT #{num}
    </select>

    <!-- 获取历史数据条数 -->
    <select id="getHistoryCount" resultType="java.lang.Long">
        SELECT COUNT(time)
        FROM ${dataBaseName}.${tableName}
        WHERE time BETWEEN #{startTime} AND #{endTime}
          AND ${fieldName} IS NOT NULL
    </select>

</mapper>