TICK-1 section 2

section-2.tick

var data = stream
    // this from node selects all input data received in the given measurement
    |from()
        .measurement(from_measurement)
        .where(lambda: "model" == model)
    // this eval node remembers the model name
    |eval(lambda: model)
        .as('model')
        .keep()
    // the next five lines save the data to the target database into a new measurement

var saved = data
    |influxDBOut()
        .database(out_db)
        .retentionPolicy(retention_policy)
        .measurement(out_measurement)