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  • Granfana+PostgreSQL

    建表:

    create table pdm_log(
        id serial primary key,
        date_time timestamp with time zone DEFAULT CURRENT_TIMESTAMP,
        Sealing_Press_Band_Temperature numeric,
        Sealing_Anvil_Band_Temperature numeric,
    Cooling_Anvil_Peltier_Temperature numeric, E_Stage_Motor_Temperature numeric, X_Stage_Motor_Temperature numeric, Z_Stage_Motor_Temperature numeric, Cooling_Press_Motor_Temperature numeric, Cooling_Anvil_Motor_Temperature numeric, units varchar )

    注意检查和修改时区:

    SHOW timezone; //显示时区
    
    SET timezone TO 'US/Pacific'
    
    set timezone to 'prc'; //设置时区为china
    

      

    metrics

    SELECT
      $__timeGroup(date_time,'5m') as time,
      min(measurement) as min_value,
      max(measurement) as max_value
    FROM cms_log
    WHERE $__timeFilter(date_time) and units='Celsius'
    GROUP BY time
    ORDER BY time
    
    SELECT
      $__time(date_time),
      measurement
    FROM
      cms_log
    WHERE
      $__timeFilter(date_time)
    

      

      

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  • 原文地址:https://www.cnblogs.com/carsonzhu/p/7771257.html
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