influxdb select aggregation

In InfluxDB, you can use the SELECT statement to perform aggregations on data. The SELECT statement allows you to retrieve and manipulate data from your InfluxDB database.

To perform aggregations, you can use various functions available in InfluxDB. These functions include:

1. MEAN: Calculates the arithmetic mean of the selected field over a specified time range.
2. SUM: Calculates the sum of the selected field over a specified time range.
3. COUNT: Counts the number of data points in the selected field over a specified time range.
4. MEDIAN: Calculates the median value of the selected field over a specified time range.
5. MAX: Retrieves the maximum value of the selected field over a specified time range.
6. MIN: Retrieves the minimum value of the selected field over a specified time range.

Here's an example of using the MEAN function to calculate the average temperature over a 5-minute time interval:

SELECT MEAN("temperature") FROM "measurement" WHERE time >= now() - 5m GROUP BY time(1m)

This query selects the "temperature" field from the "measurement" measurement and calculates the mean value over a 5-minute time interval. The result is grouped by 1-minute intervals.

You can modify this query according to your specific requirements and use other aggregation functions as needed.