我试图将名为measured_component的列与特定条件相加,并将其添加到我的表中,但遇到了问题。select sum(TARGET) as TARGET_TOTALwhere MEASURED_COMPONENT ='dispatch' or MEASURED_COMPONENT= 'DRIVE'
or MEA
我有一个天气测量表,这是它的一个简化版本: "station_id","measured_at","rainy" prev.station_id, prev.measured_at AS started_at,
COALESCE(LEAD(prev.measured_at) OVER (ORDER BY prev.me
我希望从传感器表中获取每个传感器的最后测量值,因此在本例中,最后3行来自度量值表:220000000000000001 3.05 1619166847830
我试过像SELECT MAX(m.id) as id, m.sensor_id, m.value, MAX(m.measured) as measured FROM Measurements m JOIN Sensors s ON m.sensor_id
in the container by the instruments being characterizedmeasured.postbetween calibration at 0 and 400
seg1 <- seq(diff.0,diff.400,length.out=measured.400-measured.0).range <- round(seq(measured.0,measured</em