mudhorn/prometheus
1
0
Fork 0
mirror of https://github.com/prometheus/prometheus.git synced 2024-11-13 17:14:05 -08:00
Code Issues Actions 4 Packages Projects Releases Wiki Activity

[DOCS] Querying basics: what can be graphed

Browse source 
Put a scalar to query, it can be graphed.

So the doc says "an expression that returns an instant vector is the only type which can be graphed." is not correct?

And also, a query_range, which used for graph, always return a range vector <https://promlabs.com/blog/2020/06/18/the-anatomy-of-a-promql-query/#range-queries> , so it's confusing to read the above statement.

Signed-off-by: Viet Hung Nguyen <hvn@familug.org>
This commit is contained in:
Viet Hung Nguyen 2024-10-03 21:11:44 +09:00
parent 199d2fb492
commit f0a9f62ce8
1 changed files with 3 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
docs/querying/basics.md
View file

@ -35,8 +35,9 @@ evaluate to one of four types:
Depending on the use-case (e.g. when graphing vs. displaying the output of an
expression), only some of these types are legal as the result of a
user-specified expression. For example, an expression that returns an instant
vector is the only type which can be graphed.
user-specified expression.
For [instant queries](api.md#instant-queries), any of the above data types are allowed as the root of the expression.
[Range queries](api.md/#range-queries) only support scalar-typed and instant-vector-typed expressions.
_Notes about the experimental native histograms:_