ES|QL VARIANCE_OVER_TIME function
Calculates the population variance over time of a numeric field.
field- the metric field to calculate the value for
window-
the time window over which to compute the variance over time
Calculates the population variance over time of a numeric field.
| field | window | result |
|---|---|---|
| double | time_duration
|
double |
| integer | time_duration
|
double |
| long | time_duration
|
double |
TS k8s
| STATS avg_var_cost=AVG(VARIANCE_OVER_TIME(network.cost)) BY cluster, time_bucket = TBUCKET(1minute)
| cluster:keyword | time_bucket:datetime | avg_var_cost:double |
|---|---|---|
| staging | 2024-05-10T00:03:00.000Z | 20.478516 |
| qa | 2024-05-10T00:21:00.000Z | 16.0 |
| qa | 2024-05-10T00:18:00.000Z | 11.192274 |
| staging | 2024-05-10T00:09:00.000Z | 10.446904 |