Flux reference documentation
All Flux reference material is provided in the Flux documentation:
Flux with the InfluxDB IOx storage engine
When querying data from an InfluxDB bucket backed by InfluxDB IOx, use the following input functions:
iox.from(): alternative tofrom().iox.sql(): execute a SQL query with Flux.
Both IOx-based input functions return pivoted data with a column for each field in the output. To unpivot the data:
- Group by tag columns.
- Rename the
timecolumn to_time. - Use
experimental.unpivot()to unpivot the data. All columns not in the group key (other than_time) are treated as fields.
import "experimental"
import "experimental/iox"
iox.from(bucket: "example-bucket", measurement: "example-measurement")
|> range(start: -1d)
|> group(columns: ["tag1", "tag2". "tag3"])
|> rename(columns: {time: "_time_"})
|> experimental.unpivot()
import "experimental"
import "experimental/iox"
query = "SELECT * FROM \"example-measurement\" WHERE time >= now() - INTERVAL '1 day'"
iox.sql(bucket: "example-bucket", query: query)
|> group(columns: ["tag1", "tag2". "tag3"])
|> rename(columns: {time: "_time_"})
|> experimental.unpivot()
Flux performance with InfluxDB IOx
When querying data from an InfluxDB bucket backed by InfluxDB IOx, using iox.from()
is less performant than querying a TSM-backed bucket with from().
For better Flux query performance, use iox.sql().
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