Aliaksandr Valialkin
e6eee2bebf
app/vmselect/promql: add zscore-related functions: zscore_over_time(m[d]) and zscore(q) by (...)
2020-08-03 21:52:18 +03:00
Aliaksandr Valialkin
48d0ec1363
docs/MetricsQL.md: small fixes in the docs
2020-07-28 13:27:37 +03:00
Aliaksandr Valialkin
994fa2f3bf
app/vmselect/promql: add buckets_limit(k, buckets) function, which limits the number of buckets per time series to k
...
This function works with both Prometheus-style and VictoriaMetrics-style buckets.
The function removes buckets with the lowest values in order to reserve the highest precision.
The function is useful for building heatmaps in Grafana from too big number of buckets.
2020-07-24 16:13:53 +03:00
Aliaksandr Valialkin
3e557c9861
app/vmselect/promql: add rate_over_sum(m[d]) function to MetricsQL, which returns rate over sum of m values over d duration
...
Something like `sum_over_time(m[d]) / d`, but more accurate.
2020-07-24 01:17:42 +03:00
Aliaksandr Valialkin
ecb1b2564a
app/vmselect/promql: add mode() aggregate function
2020-07-20 15:31:20 +03:00
Aliaksandr Valialkin
1c641037e8
app/vmselect/promql: add mode_over_time(m[d]) function
...
See https://en.wikipedia.org/wiki/Mode_(statistics) and https://stackoverflow.com/questions/61134078/promql-query-to-return-the-value-from-a-range-vector-which-occurs-maximum-no-of
2020-07-17 18:28:45 +03:00
Aliaksandr Valialkin
df01836818
app/vmselect/promql: keep all labels for time series from any() call
2020-07-17 15:17:54 +03:00
Aliaksandr Valialkin
5d3db3ff7c
app/vmselect: add interpolate function for filling gaps with linearly interpolated values
...
See https://stackoverflow.com/q/62565021/274937 for details
2020-07-02 14:54:21 +03:00
Aliaksandr Valialkin
dbd8beccfa
app/vmselect/promql: add ascent_over_time(m[d]) and descent_over_time(m[d]) functions
...
These functions could be useful in GPS tracking apps for calculating the summary for height gain/loss
over the given duration `d`.
2020-05-21 12:07:48 +03:00
Aliaksandr Valialkin
7705c19720
docs/MetricsQL.md: add a link to https://medium.com/@valyala/promql-tutorial-for-beginners-9ab455142085
2020-05-19 23:20:13 +03:00
Aliaksandr Valialkin
a441cdd1d9
app/vmselect/promql: add outliersk(N, m) aggregate function for anomaly detection across groups of similar time series
2020-05-19 13:52:36 +03:00
Aliaksandr Valialkin
cc311e20fe
app/vmselect/promql: add any(x) by (y) aggregate function, which returns any time series from q for each group y
2020-05-12 19:45:56 +03:00
Aliaksandr Valialkin
574289c3fb
app/vmselect/promql: support for sum(x) by (y) limit N syntax in order to limit the number of output time series after aggregation
2020-05-12 19:45:54 +03:00
Aliaksandr Valialkin
d2af2c8c3e
docs/MetricsQL.md: document first_over_time and last_over_time functions
2020-05-02 22:43:29 +03:00
Aliaksandr Valialkin
4e4f57b121
lib/metricsql: move it to a separate repository - github.com/VictoriaMetrics/metrics
2020-04-28 15:28:22 +03:00
Aliaksandr Valialkin
fdc2a9d1d7
app/vmselect: add label_map(q, label, srcValue1, dstValue1, ... srcValueN, dstValueN) function to MetricsQL
...
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/369
2020-03-12 19:13:47 +02:00
Aliaksandr Valialkin
7b1c7051a3
app/vmselect: add sort_by_label(q, label) and sort_by_label_desc(q, label) functions
...
This is implementation of https://github.com/prometheus/prometheus/pull/1533 for VictoriaMetrics.
2020-02-13 17:01:37 +02:00
Aliaksandr Valialkin
4cc0163c7c
docs: migrate ExtendedPromQL->MetricsQL in order to be more consistent
2020-02-10 23:02:43 +02:00
