Flux data scripting language
This page documents an earlier version of InfluxDB. InfluxDB v2 is the latest stable version. See the equivalent InfluxDB v2 documentation: Get started with Flux and InfluxDB.
Flux is a functional data scripting language designed for querying, analyzing, and acting on time series data. Its takes the power of InfluxQL and the functionality of TICKscript and combines them into a single, unified syntax.
Flux v0.65 is production-ready and included with InfluxDB v1.8. The InfluxDB v1.8 implementation of Flux is read-only and does not support writing data back to InfluxDB.
Flux design principles
Flux is designed to be usable, readable, flexible, composable, testable, contributable, and shareable. Its syntax is largely inspired by 2018’s most popular scripting language, JavaScript, and takes a functional approach to data exploration and processing.
The following example illustrates pulling data from a bucket (similar to an InfluxQL database) for the last five minutes,
filtering that data by the cpu measurement and the cpu=cpu-total tag, windowing the data in 1 minute intervals,
and calculating the average of each window:
from(bucket:"telegraf/autogen")
|> range(start:-1h)
|> filter(fn:(r) =>
r._measurement == "cpu" and
r.cpu == "cpu-total"
)
|> aggregateWindow(every: 1m, fn: mean)
Query data with Flux
Guides that walk through both common and complex queries and use cases for Flux.
Enable Flux
Instructions for enabling Flux in your InfluxDB configuration.
Flux vs InfluxQL
Flux is an alternative to InfluxQL and other SQL-like query languages for querying and analyzing data. Flux uses functional language patterns making it incredibly powerful, flexible, and able to overcome many of the limitations of InfluxQL. This article outlines many of the tasks possible with Flux but not InfluxQL and provides information about Flux and InfluxQL parity. Possible with Flux InfluxQL and Flux parity Possible with Flux Joins Math across measurements Sort by tags Group by any column Window by calendar months and years Work with multiple data sources DatePart-like queries Pivot Histograms Covariance Cast booleans to integers String manipulation and data shaping Work with geo-temporal data Joins InfluxQL has never supported joins.
Get started with Flux
Get started with Flux, InfluxData’s new functional data scripting language. This step-by-step guide will walk you through the basics and get you on your way.
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