Influxdata
/
docs-v2
mirror of https://github.com/influxdata/docs-v2.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

included measurements in experimental.join note

pull/882/head
Scott Anderson 2020-03-27 15:53:51 -06:00
parent d74730d819
commit e5848e041d
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
content/v2.0/reference/flux/stdlib/experimental/join.md
View File

@ -16,9 +16,9 @@ Columns that are not part of the group key or explicitly mapped in the join oper
are dropped from output tables. are dropped from output tables.
{{% note %}} {{% note %}}
To join streams of tables with different fields, use [`group()`](/v2.0/reference/flux/stdlib/built-in/transformations/group/) To join streams of tables with different fields or measuremtns, use [`group()`](/v2.0/reference/flux/stdlib/built-in/transformations/group/)
or [`drop()`](/v2.0/reference/flux/stdlib/built-in/transformations/drop/) to remove or [`drop()`](/v2.0/reference/flux/stdlib/built-in/transformations/drop/) to remove
`_field` from the group key before joining. `_field` and `_measurement` from the group key before joining.
_See an example [below](#join-two-streams-of-tables-with-different-fields)._ _See an example [below](#join-two-streams-of-tables-with-different-fields)._
{{% /note %}} {{% /note %}}
@ -135,19 +135,19 @@ experimental.join(
) )
``` ```
###### Join two streams of tables with different fields ###### Join two streams of tables with different fields and measurements
```js ```js
import "experimental" import "experimental"
s1 = from(bucket: "example-bucket") s1 = from(bucket: "example-bucket")
|> range(start: -1h) |> range(start: -1h)
|> filter(fn: (r) => r._measurement == "foo" and r._field == "bar") |> filter(fn: (r) => r._measurement == "foo" and r._field == "bar")
|> group(columns: ["_time", "_field", "_value"], mode: "except") |> group(columns: ["_time", "_measurement", "_field", "_value"], mode: "except")
s2 = from(bucket: "example-bucket") s2 = from(bucket: "example-bucket")
|> range(start: -1h) |> range(start: -1h)
|> filter(fn: (r) => r._measurement == "baz" and r._field == "quz") |> filter(fn: (r) => r._measurement == "baz" and r._field == "quz")
|> group(columns: ["_time", "_field", "_value"], mode: "except") |> group(columns: ["_time", "_measurement", "_field", "_value"], mode: "except")
experimental.join( experimental.join(
left: s1, left: s1,