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docs: mention tlast_over_time
in influx guide
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/8188 Signed-off-by: hagen1778 <roman@victoriametrics.com>
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@ -258,12 +258,13 @@ consider [backfilling tips](https://docs.victoriametrics.com/single-server-victo
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* _VictoriaMetrics may return non-existing data points if `step` param is lower than the actual data resolution. See
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more about this [here](https://docs.victoriametrics.com/keyconcepts/#range-query)._
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* How do I get the `real` last data point, not `ephemeral`?
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* _[last_over_time](https://docs.victoriametrics.com/metricsql/#last_over_time) function can be used for
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limiting the lookbehind window for calculated data. For example, `last_over_time(metric[10s])` would return
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calculated samples only if the real samples are located closer than 10 seconds to the calculated timestamps
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according to
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`start`, `end` and `step` query args passed
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* _[last_over_time](https://docs.victoriametrics.com/metricsql/#last_over_time) function returns last value on
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the given look-behind window. For example, `last_over_time(metric[10s])` would return
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sample values only if the real samples are located closer than 10 seconds to the calculated timestamps
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according to `start`, `end` and `step` query args passed
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to [range query](https://docs.victoriametrics.com/keyconcepts/#range-query)._
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* _[tlast_over_time](https://docs.victoriametrics.com/metricsql/#tlast_over_time) function returns last timestamp on
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the given look-behind window, similarly to [last_over_time](https://docs.victoriametrics.com/metricsql/#last_over_time)._
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* How do I get raw data points with MetricsQL?
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* _For getting raw data points specify the interval at which you want them in square brackets and send
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as [instant query](https://docs.victoriametrics.com/keyconcepts/#instant-query). For
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