The rate of change of the counter over the observed time period. This is the raw or simple rate, equivalent to delta(summary) or time_delta(summary). After accounting for resets, the last value is subtracted from the first value and divided by the duration between the last observed time and the first observed time.

rate(
summary CounterSummary
) RETURNS DOUBLE PRECISION

For more information about counter aggregation functions, see the hyperfunctions documentation.

NameTypeDescription
summaryCounterSummaryThe input CounterSummary from a counter_agg call
NameTypeDescription
rateDOUBLE PRECISIONThe per second observed rate computed from the CounterSummary
SELECT
id,
rate(summary)
FROM (
SELECT
id,
counter_agg(ts, val) AS summary
FROM foo
GROUP BY id
) t

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