PromQL provides aggregation operators that act on instant vectors. The aggregation operators can be used to aggregate the sample data returned by an instant-vector-typed expression and form the data into a new time series. Common aggregation operators are shown in the following table.

Operation Function

Description

Explanation

Operation Function	Description	Explanation
sum	Sum	Sums the values of records. For example, sum(http_requests_total) counts the total number of HTTP requests.
min	Minimum	Returns the minimum value of all records.
max	Maximum	Returns the maximum value of all records.
avg	Average	Returns the average of all records.
stddev	Standard deviation	Returns the standard deviation of all records.
count	Count	Returns the number of all records.
bottomk	The last n time series	Sorts sample values and returns the time series with the last n sample values.
topk	The first n time series	Sorts sample values and returns the time series with the top n sample values.

Last updated: 2026.07.10 11:37:29

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