influxDBClient.GetQueryApi().QueryAsync returns all values instead the only the last

1

Context:

  • .NET driver

  • query :
    from(bucket: “my_bucket”)
    |>range(start: -1y)
    |> last()

I expected to have only ONE unique value, but instead of that, the API is returning ALL values (List of FluxTable). How we can manage that?
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Many thanks in advance for your help,
Antonio