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158 commits

Author SHA1 Message Date
Aliaksandr Valialkin
6d13ca2b88
app/vmselect: add /select/0/prometheus/expand-with-exprs page 2022-12-14 16:23:17 -08:00
Aliaksandr Valialkin
c902500efc
app/vmselect/promql: add range_trim_spikes(phi, q) function for trimming phi percent of largest spikes per each time series returned by q 2022-12-05 21:55:24 -08:00
Aliaksandr Valialkin
6b2c85d6bf
docs/MetricsQL.md: document that histogram_share() accepts optional boundsLabel arg 2022-11-24 17:27:43 -08:00
Aliaksandr Valialkin
ad548abd6a
app/vmselect/promql: add range_normalize(q1, ..., qN) function for normalizing query results into [0..1] value range 
This may be useful for analyzing correlation between time series with different value ranges
 2022-11-21 23:25:35 +02:00
Aliaksandr Valialkin
9cb76c9cd3
app/vmselect/promql: allow using SI and IEC suffixes in numeric values inside queries 
For example, 10Ki is equivalent to 10*1024, while 5.3M is equivalent to 5.3*1000*1000
 2022-11-21 21:28:34 +02:00
Aliaksandr Valialkin
0cc59b9f95
app/vmselect/promql: add range_stdvar() and range_stddev() functions for calculating variance and deviation over time series on the selected time range 2022-11-17 01:03:02 +02:00
Aliaksandr Valialkin
facf7efa3a
app/vmselect/promql: add range_linear_regression(q) function for calculating simple linear regression for the selected time series on the selected time range 2022-11-17 00:39:17 +02:00
Aliaksandr Valialkin
704794f164
docs/MetricsQL.md: document that input histograms must have the same set of buckets when calculating the quantile over them 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3231
 2022-10-14 14:00:26 +03:00
Aliaksandr Valialkin
b631b2bd64
docs/MetricsQL.md: formatting improvements 
Also put a link to the function type in docs for every function.
This should simplify understanding of MetricsQL functions for novice users.
 2022-10-07 00:54:41 +03:00
Roman Khavronenko
b8c4c36b89
docs: clarify numeric label values for label_value (#3129) 
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3114
Signed-off-by: hagen1778 <roman@victoriametrics.com>

Signed-off-by: hagen1778 <roman@victoriametrics.com>
 2022-09-26 16:49:45 +03:00
Dmytro Kozlov
36ea8537d9
vmselect/promql: add alphanumeric sort by label (sort_by_label_numeric) (#2982) 
* vmselect/promql: add alphanumeric sort by label (sort_by_label_numeric)

* vmselect/promql: fix tests, add documentation

* vmselect/promql: update test

* vmselect/promql: update for alphanumeric sorting, fix tests

* vmselect/promql: remove comments

* vmselect/promql: cleanup

* vmselect/promql: avoid memory allocations, update functions descriptions

* vmselect/promql: make linter happy (remove ineffectual assigment)

* vmselect/promql: add test case, fix behavior when strings are equal

* vendor: update github.com/VictoriaMetrics/metricsql from v0.44.1 to v0.45.0

this adds support for sort_by_label_numeric and sort_by_label_numeric_desc functions

* wip

* lib/promscrape: read response body into memory in stream parsing mode before parsing it

This reduces scrape duration for targets returning big responses.

The response body was already read into memory in stream parsing mode before this change,
so this commit shouldn't increase memory usage.

* wip

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2022-09-14 17:42:07 +03:00
John Belmonte
eb0b2ef3d9
MetricsQL doc spellcheck (#3080) 2022-09-08 21:28:49 +03:00
Dmytro Kozlov
2cf29cc4d1
vmselect/promql: fix panic in histogram_quantiles function (#3029) 
* vmselect/promql: fix panic in histogram_quantiles function

* Update docs/MetricsQL.md

Co-authored-by: Roman Khavronenko <roman@victoriametrics.com>

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
Co-authored-by: Roman Khavronenko <roman@victoriametrics.com>
 2022-08-27 01:34:54 +03:00
Aliaksandr Valialkin
d39915ff8e
docs/MetricsQL.md: add the list of supported ... functions lines just before the corresponding lists 
This improves the readability a bit
 2022-08-16 12:10:09 +03:00
Aliaksandr Valialkin
979444b4ed
all: fix other typos in the same way as 6f4d9b2a48 does 2022-07-18 12:10:41 +03:00
Roman Khavronenko
3ada676879
docs: reference links from key concepts (#2745) 
Signed-off-by: hagen1778 <roman@victoriametrics.com>

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2022-06-19 23:14:30 +03:00
Denis Fondras
53b68eb254
Fix typo (#2538) 2022-05-05 21:16:39 +03:00
Peter Dupej
9e193fb764
Update MetricsQL.md (#2519) 
remove typo from label_replace doc.
 2022-05-02 09:43:57 +03:00
Aliaksandr Valialkin
83db416567
docs/MetricsQL.md: clarify keep_metric_names docs 2022-04-27 11:25:02 +03:00
Aliaksandr Valialkin
6eb1580158
app/vmselect/promql: add tlast_change_over_time(m[d]) function, which returns the timestamp for the last change of m on the given lookbehind window d 2022-04-27 10:58:40 +03:00
Aliaksandr Valialkin
a5cfe5d13e
app/vmselect/promql: add drop_common_labels() function 2022-04-21 14:20:36 +03:00
Roman Khavronenko
5b367ad594
docs: update increase_prometheus desc (#2381) 
Remove note that this func is supported by PromQL.
 2022-03-28 12:29:41 +03:00
Dima Lazerka
6e8e385375
VMAnomaly docs fixes (#2361) 
* Added docs for vmanomaly

* Add example images

* Stylistic fixes

* Move images to root

* Update docs/vmanomaly.md

* Update docs/vmanomaly.md

Co-authored-by: Roman Khavronenko <roman@victoriametrics.com>

* Squeeze vmanomaly after vmbackupmanager before Case Studies

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
Co-authored-by: Roman Khavronenko <roman@victoriametrics.com>
 2022-03-25 12:09:05 +02:00
Arash Hatami
2e01691d5d
A good change for MD files (#2353) 
* Lint YAML

* Remove extra comment

* Fix command problem

* Format MD files

* Format & fix problem of MD files for docs

* Another fix for MD files
 2022-03-22 14:01:04 +02:00
Aliaksandr Valialkin
5a1e4a140f
app/vmselect/promql: implement keep_metric_names modifier for transform and rollup functions 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949
 2022-01-14 04:15:35 +02:00
Aliaksandr Valialkin
53c9a81f2b
app/vmselect/promql: add stale_samples_over_time() function 2022-01-14 01:49:24 +02:00
Aliaksandr Valialkin
0580a58feb
app/vmselect/promql: add support for @ modifier 
Add support for `@` modifier in MetricsQL according to https://prometheus.io/docs/prometheus/latest/querying/basics/#modifier

Extend the support with the following features:
* Allow using `@` modifier everywhere in the query. For example, `sum(foo) @ end()`
* Allow using arbitrary expression as `@` modifier. For example, `foo @ (end() - 1h)`
  returns `foo` value at `end - 1 hour` timestamp on the selected time range `[start ... end]`

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1348
 2022-01-13 22:15:19 +02:00
Aliaksandr Valialkin
3396f08874
app/vmselect/promql: follow-up after 177e345d8a 
* Document changes_prometheus(), increase_prometheus() and delta_prometheus() functions.
* Simplify their implementation
* Mention these functions in docs/CHANGELOG.md
 2021-12-20 13:15:06 +02:00
Roman Khavronenko
a92f53486a
docs: update MetricsQL.Subquery section description (#1951) 
* simplify sentences;
* fix typo.

Signed-off-by: hagen1778 <roman@victoriametrics.com>
 2021-12-17 11:52:42 +02:00
Aliaksandr Valialkin
c170841951
app/vmselect/promql: add timestamp_with_name(m[d]) function 
This function works the same as `timestamp()`, but doesn't remove source time series names.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949#issuecomment-995222388
 2021-12-15 23:38:09 +02:00
Aliaksandr Valialkin
c922c7af9a
lib/storage: convert alternate regexps into Graphite wildcards inside __graphite__ pseudo-label 
For example, `{__graphite__=~"foo.(bar|baz)"}` is automatically converted to `{__graphite__=~"foo.{bar,baz}"}` before execution.
This allows using multi-value Grafana template variables such as `{__graphite__=~"foo.($app)"}`.
 2021-12-14 19:55:59 +02:00
Aliaksandr Valialkin
addae7fc6a
app/vmselect/promql: preserve the order of time series passed to limit_offset() function 
Previously time series passed to `limit_offset()` were shuffled according to hash for their labels.
This was unexpected behaviour for most users.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1920 and https://github.com/VictoriaMetrics/VictoriaMetrics/issues/951
 2021-12-12 18:07:15 +02:00
Aliaksandr Valialkin
aa6d11a33f
app/vmselect/promql: add now() function, which returns the current timestamp as a floating-point value in seconds 2021-11-17 16:42:11 +02:00
Aliaksandr Valialkin
a352b59b7e
docs/MetricsQL.md: mention than tlast_over_time() is an alias for timestamp() 2021-11-08 18:29:59 +02:00
Aliaksandr Valialkin
3a1ac218ba
app/vmselect/promql: add duration_over_time(m[d], max_interval) function 
This function calculates the actual lifetime of the time series on the given lookbehdind window `d`

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1780
 2021-11-08 13:14:57 +02:00
Aliaksandr Valialkin
62edbcdb23
docs/MetricsQL.md: clarify documentation for lifetime function 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1780
 2021-11-08 12:35:45 +02:00
João Paulo
5bd3518e4d
docs: fix multiple typos (#1787) 
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2021-11-05 20:46:06 +02:00
Aliaksandr Valialkin
a102fca4ac
app/vmselect/promql: add limit_offset(limit, offset, q) function, which can be used for paging over big number of time series 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1778
 2021-11-03 16:03:10 +02:00
Aliaksandr Valialkin
43bf0333eb
app/vmselect/promql: add label_graphite_group() function for extracting groups from Graphite metric names 2021-11-03 13:20:34 +02:00
Aliaksandr Valialkin
9568961054
docs/MetricsQL.md: add missing blank line before the link to github.com/VictoriaMetrics/metricsql package 2021-10-13 15:11:46 +03:00
Roman Khavronenko
49a7ff62df
docs: mention "PromQL compliance" in MetricsQL docs (#1691) 2021-10-11 21:52:28 +03:00
Aliaksandr Valialkin
b3d28f3872
app/vmselect/promql: add missing trigonometric functions, which are going to be added in Prometheus 2.31 
See https://github.com/prometheus/prometheus/issues/9233
 2021-10-11 21:17:21 +03:00
Aliaksandr Valialkin
d00f8b8800
docs/MetricsQL.md: clarify docs for union() function 2021-10-11 17:41:10 +03:00
Aliaksandr Valialkin
f17c4b74c5
docs/MetricsQL.md: add a link to https://medium.com/@romanhavronenko/victoriametrics-promql-compliance-d4318203f51e 2021-10-11 11:02:03 +03:00
Aliaksandr Valialkin
f1e1d20ac4
app/vmselect/promql: consistently return the same set of time series from limitk() function 
This is the expected behaviour by most users.
 2021-10-08 19:55:29 +03:00
Aliaksandr Valialkin
ec6eb03d65
app/vmselect/promql: add topk_last and bottomk_last functions 2021-09-30 13:23:27 +03:00
Aliaksandr Valialkin
4b3951fd86
app/vmselect/promql: add rollup_scrape_interval(m[d]) function 
It calculates the min, max and avg scrape intervals for m over the given lookbehind window d
 2021-09-27 19:21:55 +03:00
Aliaksandr Valialkin
76c650bbda app/vmselect/promql: add quantiles_over_time("phiLabel", phi1, ..., phiN, m[d]) function for calculating multiple quantiles at once 2021-09-17 23:35:04 +03:00
Aliaksandr Valialkin
81d24045c2 app/vmselect/promql: add histogram_quantiles("phiLabel", phi1, ..., phiN, buckets) function 
This function calculates multiple quantiles over the given buckets at once

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1573
 2021-09-17 13:39:06 +03:00
Aliaksandr Valialkin
3f8de4f82f app/vmselect/promql: add mad(q) and outliers_mad(tolerance, q) functions to MetricsQL 2021-09-16 13:35:38 +03:00
Dima Lazerka
5a256970d6 Remove port 3000 and add https to play-grafana link (#1616) 
* Remove port 3000 and add https to play-grafana link

* Fix typo

Co-authored-by: Dzmitry Lazerka <dlazerka@gmail.com>
 2021-09-14 14:27:16 +03:00
Aliaksandr Valialkin
2b19dd8601 docs/MetricsQL.md: add a link to VictoriaMetrics github 2021-09-08 00:15:34 +03:00
Aliaksandr Valialkin
39bb6bdd79 app/vmselect/promql: add quantile("phiLabel", phi1, ..., phiN, q) aggregate function to MetricsQL 
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1573
 2021-08-27 18:40:25 +03:00
Aliaksandr Valialkin
9b39e078c0 docs/MetricsQL.md: typo fix: histogram_qunatile -> histogram_quantile 2021-08-23 23:08:28 +03:00
Aliaksandr Valialkin
3eca49c4a6 docs/MetricsQL.md: fix the indentation for median function 2021-08-23 12:04:43 +03:00
Aliaksandr Valialkin
a4948d92b5 docs/MetricsQL.md: typo fix: convesions->conversions 2021-08-23 12:01:34 +03:00
Aliaksandr Valialkin
8b9dc45c3c docs/MetricsQL.md: typo fixes 2021-08-23 12:00:17 +03:00
Aliaksandr Valialkin
5917c72ddd docs/MetricsQL.md: rehaul the documentation on MetricsQL 
* Document all the functions supported by MetricsQL, including PromQL functions
* Group functions by their type: rollup functions, transform functions, label manipulation functions and aggregate functions.
* Document implicit query transformations.
 2021-08-23 11:46:30 +03:00
Aliaksandr Valialkin
49886ecbc8 app/vmselect/promql: add bitmap_and(), bitmap_or() and bitmap_xor() functions to MetricsQL 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1541
 2021-08-17 13:22:15 +03:00
Aaron France
3c22b5c41e fix: typo in metrics.md docs 2021-07-27 10:53:02 +03:00
Aliaksandr Valialkin
9add9d86a6 app/vmselect/promql: duration handling improvements in MetricsQL queries 
- Support durations anywhere in MetricsQL queries. E.g. sum_over_time(m[1h])/1h is equivalent to sum_over_time(m[1h])/3600
- Support durations without suffix. E.g. rate(m[300]) is equivalent to rate(m[5m])
 2021-07-12 17:19:32 +03:00
Aliaksandr Valialkin
c97212ea63 docs/MetricsQL.md: add a link to technical details about rate() and increase() calculations in Prometheus and VictoriaMetrics 2021-05-28 13:14:23 +03:00
Dan Fredell
e05c03cf00 Fix quote difference on label_move example (#1321) 
Fix quote difference on label_move example
 2021-05-25 12:13:39 +03:00
Aliaksandr Valialkin
e9a63a5942 docs/MetricsQL.md: add a link to a list of supported timezones that can be passed to timezone_offset() function 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1306
 2021-05-21 16:56:07 +03:00
Aliaksandr Valialkin
180829b8c2 app/vmselect/promql: add timezone_offset(tz) function 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1306
 2021-05-20 11:54:06 +03:00
Roman Khavronenko
c47825c255 Docs update from victoriaMetrics.github.io (#1302) 
* port change from 11ca65677b

* port change from afb41dfa43

* port change from f82e3733c9

* port change from d499ab0502
 2021-05-17 01:51:54 +03:00
Aliaksandr Valialkin
2bd99046a1 docs: update docs order 2021-04-24 01:28:13 +03:00
f41gh7
b493937815 updates per-tenant stats docs 
changes docs order
changes per-tenant-stats pic
 2021-04-14 12:31:51 +03:00
Roman Khavronenko
ff3711eea2 docs: update docs ordering and formatting (#1192) 
The major change is adding `sort` directive to docs. For those docs which are copied
from internal packages `sort` is added via makefile command. For the rest it is added
manually since they're updated manually as well.

The rest of changes is connected with markdown formatting. For example, changing headers
in some files (`##` => `#`) makes navigation on .github.io to look better. This especially
useful for `changelog` docs.

Table of contents for `vmctl` is dropped, since we already have it autogenerated on .github.io.

No link changes expected. The corresponding PR to `cluster` branch will be made in follow-up PR.
 2021-04-07 13:43:01 +03:00
Aliaksandr Valialkin
4aa59cae7c app/vmselect/promql: do not delete dst_label if src_label is empty in label_copy(q, src_label, dst_label) and label_move(q, src_label, dst_label) 2021-04-03 22:06:50 +03:00
Aliaksandr Valialkin
b9469de410 app/vmselect/promql: add ability to set label value additionally to label name for the remaining sum of time series returned from topk_* and bottomk_* functions in the form: topk_min(N, m, "label=value") 2021-04-02 23:56:30 +03:00
John Belmonte
edf39aa225 spelling fix: adjacent (#1115) 2021-03-09 09:19:16 +02:00
Aliaksandr Valialkin
5277507932 app/vmselect/promql: add histogram_avg(), histogram_stddev() and histogram_stdvar() functions to MetricsQL 2021-03-04 14:12:52 +02:00
Aliaksandr Valialkin
5dbe88a1c6 app/vmselect/promql: add increase_pure() function to MetricsQL 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/962
 2021-02-22 19:15:31 +02:00
Aliaksandr Valialkin
4b930b9ffe app/vmselect: add ability to set Graphite-compatible filter via {__graphite__="foo.*.bar"} syntax 2021-02-03 01:17:19 +02:00
Aliaksandr Valialkin
c5bdab5a4c app/vmselect/promql: add ability to pass multiple labels to sort_by_label and sort_by_label_desc functions 
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/992
 2021-01-13 12:43:47 +02:00
Aliaksandr Valialkin
df6e399f73 app/vmselect/promql: add tfirst_over_time(m[d]) and tlast_over_time(m[d]) MetricsQL functions for returning timestamps for the first and the last samples in m over d 2021-01-12 16:12:47 +02:00
Aliaksandr Valialkin
c0db28cd9a docs/MetricsQL.md: clarify that limitk(k, q) returns an arbitrary set of k time series with each call 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/951
 2020-12-12 14:18:02 +02:00
Aliaksandr Valialkin
d242c2f2bd app/vmselect/promql: add count_eq_over_time(m[d], N) and count_ne_over_time(m[d], N) for calculating the number of samples in m over d that are equal / not equal to N 2020-12-05 12:31:01 +02:00
Aliaksandr Valialkin
8cf76d8747 app/vmselect/promql: add label_uppercase(q, label1, ... labelN) and label_lowercase(q, label1, ... labelN) functions 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/936
 2020-12-03 21:46:18 +02:00
John Belmonte
7ac49ac176 MetricsQL docs: parameter consistency (#915) 
* MetricsQL docs: parameter consistency

if I understand correctly:
  * `fun(q)` - fun takes instant vector
  * `fun(m[d])` - fun takes range vector

* Update docs/MetricsQL.md

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
 2020-11-20 11:43:07 +02:00
Aliaksandr Valialkin
6ce80425a6 docs/MetricsQL.md: fix a link to with templates page 2020-11-05 16:12:59 +02:00
Aliaksandr Valialkin
40a4f5ded4 docs/MetricsQL.md: add missing whitespace 2020-11-02 23:49:45 +02:00
Aliaksandr Valialkin
c4464594b7 app/vmselect/promql: allow passing optional third argument to topk_* and bottomk_* functions in order to obtain sum of time series outside top/bottom K 2020-10-20 20:09:55 +03:00
Aliaksandr Valialkin
9b91305a31 docs/MetricsQL.md: small clarifications 2020-10-17 12:01:33 +03:00
Aliaksandr Valialkin
ac525462ce docs/MetricsQL.md: mention that VictoriaMetrics keeps metric names after applying functions which dont change time series meaning 2020-10-12 13:25:28 +03:00
John Belmonte
a72a2566d7 fix typo on outliersk() doc (#758) 2020-09-11 01:59:55 +03:00
Aliaksandr Valialkin
478d8f8393 app/vmselect/promql: add count_le_over_time(m[d], le) and count_gt_over_time(m[d], gt) functions 
These functions returns the number of raw samples that don't exceed `le` or are bigger than `gt`.
These functions are complement to already existing `share_le_over_time(m[d], le)` and `share_gt_over_time(m[d], gt)`.
 2020-09-03 15:28:58 +03:00
Aliaksandr Valialkin
285665e93b app/vmselect/promql: allow passing multiple args to aggregate functions such as avg(q1, q2, q3) 2020-08-15 01:15:16 +03:00
Aliaksandr Valialkin
87d7710c8e docs/MetricsQL.md: mention that MetricsQL removes all the NaN values from results 2020-08-07 07:51:40 +03:00
Aliaksandr Valialkin
bdb881c43b app/vmselect/promql: add zscore-related functions: zscore_over_time(m[d]) and zscore(q) by (...) 2020-08-03 21:52:15 +03:00
Aliaksandr Valialkin
312acf7ce9 docs/MetricsQL.md: small fixes in the docs 2020-07-28 13:28:01 +03:00
Aliaksandr Valialkin
cf69b1ea6f 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 16:14:12 +03:00
Aliaksandr Valialkin
8d1721d128 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 01:17:15 +03:00
Aliaksandr Valialkin
4d2011a87d app/vmselect/promql: add mode() aggregate function 2020-07-20 15:30:11 +03:00
Aliaksandr Valialkin
427fa43ce2 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 18:29:10 +03:00
Aliaksandr Valialkin
c64914a7e4 app/vmselect/promql: keep all labels for time series from any() call 2020-07-17 15:17:37 +03:00
Aliaksandr Valialkin
f10e8809c0 app/vmselect: add interpolate function for filling gaps with linearly interpolated values 
See https://stackoverflow.com/q/62565021/274937 for details
 2020-07-02 14:54:46 +03:00
Aliaksandr Valialkin
d83c68ca03 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 12:06:34 +03:00
Aliaksandr Valialkin
ec6fb5a323 docs/MetricsQL.md: add a link to https://medium.com/@valyala/promql-tutorial-for-beginners-9ab455142085 2020-05-20 00:51:27 +03:00