restructured flux docs
Scott Anderson
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---
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Flux's functional syntax allows you to retrieve, transform, process, and output data easily.
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There is a large library of built-in functions, but you can also create your own
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custom functions to perform operations that suit your needs.
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There is a large library of built-in and importable functions.
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You can also [create your own custom functions](/v2.0/query-data/guides/custom-functions)
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to perform operations that suit your needs.
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{{< children >}}
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---
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title: Built-in Flux functions
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description: placeholder
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menu:
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v2_0_ref:
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name: Built-in
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parent: Flux functions
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weight: 201
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---
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Placeholder
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@ -1,11 +1,14 @@
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---
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title: Flux input functions
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description: Flux input functions define sources of data or or display information about data sources.
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aliases:
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- /v2.0/reference/flux/functions/inputs
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menu:
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v2_0_ref:
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parent: Flux functions
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parent: Built-in
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name: Inputs
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weight: 201
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identifier: built-in-inputs
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weight: 301
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---
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Flux input functions define sources of data or display information about data sources.
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@ -1,11 +1,13 @@
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---
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title: buckets() function
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description: The buckets() function returns a list of buckets in the organization.
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aliases:
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- /v2.0/reference/flux/functions/inputs/buckets
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menu:
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v2_0_ref:
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name: buckets
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parent: Inputs
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weight: 301
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parent: built-in-inputs
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weight: 401
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---
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The `buckets()` function returns a list of buckets in the organization.
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@ -1,11 +1,13 @@
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---
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title: from() function
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description: The from() function retrieves data from an InfluxDB data source.
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aliases:
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- /v2.0/reference/flux/functions/inputs/from
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menu:
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v2_0_ref:
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name: from
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parent: Inputs
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weight: 301
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parent: built-in-inputs
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weight: 401
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---
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The `from()` function retrieves data from an InfluxDB data source.
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@ -1,11 +1,13 @@
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---
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title: fromCSV() function
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description: The fromCSV() function retrieves data from a CSV data source.
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aliases:
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- /v2.0/reference/flux/functions/inputs/fromcsv
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menu:
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v2_0_ref:
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name: fromCSV
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parent: Inputs
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weight: 301
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parent: built-in-inputs
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weight: 401
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---
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The `fromCSV()` function retrieves data from a comma-separated value (CSV) data source.
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@ -1,11 +1,14 @@
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---
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title: Flux miscellaneous functions
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description: Flux provides miscellaneous functions that serve purposes other than retrieving, transforming, or outputting data.
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aliases:
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- /v2.0/reference/flux/functions/misc
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menu:
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v2_0_ref:
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parent: Flux functions
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parent: Built-in
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name: Miscellaneous
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weight: 205
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identifier: built-in-misc
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weight: 305
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---
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Flux functions primarily retrieve, shape and transform, then output data, however
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@ -1,11 +1,13 @@
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---
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title: intervals() function
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description: The intervals() function generates a set of time intervals over a range of time.
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aliases:
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- /v2.0/reference/flux/functions/misc/intervals
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menu:
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v2_0_ref:
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name: intervals
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parent: Miscellaneous
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weight: 301
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parent: built-in-misc
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weight: 401
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---
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The `intervals()` function generates a set of time intervals over a range of time.
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@ -1,11 +1,13 @@
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---
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title: linearBins() function
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description: The linearBins() function generates a list of linearly separated floats.
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aliases:
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- /v2.0/reference/flux/functions/misc/linearbins
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menu:
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v2_0_ref:
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name: linearBins
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parent: Miscellaneous
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weight: 301
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parent: built-in-misc
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weight: 401
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---
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The `linearBins()` function generates a list of linearly separated floats.
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@ -1,11 +1,13 @@
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---
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title: logarithmicBins() function
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description: The logarithmicBins() function generates a list of exponentially separated floats.
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aliases:
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- /v2.0/reference/flux/functions/misc/logarithmicbins
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menu:
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v2_0_ref:
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name: logarithmicBins
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parent: Miscellaneous
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weight: 301
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parent: built-in-misc
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weight: 401
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---
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The `logarithmicBins()` function generates a list of exponentially separated floats.
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@ -1,11 +1,13 @@
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---
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title: systemTime() function
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description: The systemTime() function returns the current system time.
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aliases:
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- /v2.0/reference/flux/functions/misc/systemtime
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menu:
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v2_0_ref:
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name: systemTime
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parent: Miscellaneous
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weight: 301
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parent: built-in-misc
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weight: 401
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---
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The `systemTime()` function returns the current system time.
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@ -1,11 +1,14 @@
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---
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title: Flux output functions
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description: Flux output functions yield results or send data to a specified output destination.
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aliases:
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- /v2.0/reference/flux/functions/outputs
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menu:
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v2_0_ref:
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parent: Flux functions
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parent: Built-in
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name: Outputs
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weight: 202
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identifier: built-in-outputs
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weight: 302
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---
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Flux output functions yield results or send data to a specified output destination.
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@ -1,11 +1,13 @@
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---
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title: to() function
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description: The to() function writes data to an InfluxDB v2.0 bucket.
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aliases:
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- /v2.0/reference/flux/functions/outputs/to
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menu:
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v2_0_ref:
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name: to
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parent: Outputs
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weight: 301
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parent: built-in-outputs
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weight: 401
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---
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The `to()` function writes data to an **InfluxDB v2.0** bucket.
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@ -1,11 +1,13 @@
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---
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title: yield() function
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description: The yield() function indicates the input tables received should be delivered as a result of the query.
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aliases:
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- /v2.0/reference/flux/functions/outputs/yield
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menu:
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v2_0_ref:
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name: yield
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parent: Outputs
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weight: 301
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parent: built-in-outputs
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weight: 401
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---
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The `yield()` function indicates the input tables received should be delivered as a result of the query.
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@ -1,11 +1,14 @@
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---
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title: Flux testing functions
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description: Flux testing functions test piped-forward data in specific ways and return errors if the tests fail.
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aliases:
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- /v2.0/reference/flux/functions/tests
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menu:
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v2_0_ref:
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name: Tests
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parent: Flux functions
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weight: 205
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parent: Built-in
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identifier: built-in-tests
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weight: 305
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---
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Flux testing functions test piped-forward data in specific ways and return errors if the tests fail.
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@ -1,11 +1,13 @@
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---
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title: assertEquals() function
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description: The assertEquals() function tests whether two streams have identical data.
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aliases:
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- /v2.0/reference/flux/functions/tests/assertequals
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menu:
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v2_0_ref:
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name: assertEquals
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parent: Tests
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weight: 301
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parent: built-in-tests
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weight: 401
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---
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The `assertEquals()` function tests whether two streams have identical data.
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---
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title: Flux transformation functions
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description: Flux transformation functions transform and shape your data in specific ways.
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aliases:
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- /v2.0/reference/flux/functions/transformations
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menu:
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v2_0_ref:
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parent: Flux functions
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parent: Built-in
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name: Transformations
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weight: 203
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identifier: built-in-transformations
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weight: 303
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---
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Flux transformation functions transform or shape your data in specific ways.
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@ -1,11 +1,14 @@
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---
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title: Flux aggregate functions
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description: Flux aggregate functions take values from an input table and aggregate them in some way.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates
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menu:
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v2_0_ref:
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parent: Transformations
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parent: built-in-transformations
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name: Aggregates
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weight: 301
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identifier: built-in-aggregates
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weight: 401
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---
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Flux aggregate functions take values from an input table and aggregate them in some way.
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@ -1,11 +1,13 @@
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---
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title: aggregateWindow() function
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description: The aggregateWindow() function applies an aggregate function to fixed windows of time.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/aggregatewindow
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menu:
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v2_0_ref:
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name: aggregateWindow
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `aggregateWindow()` function applies an aggregate function to fixed windows of time.
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---
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title: count() function
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description: The count() function outputs the number of non-null records in each aggregated column.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/count
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menu:
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v2_0_ref:
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name: count
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `count()` function outputs the number of records in each aggregated column.
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---
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title: cov() function
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description: The cov() function computes the covariance between two streams by first joining the streams, then performing the covariance operation.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/cov
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menu:
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v2_0_ref:
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name: cov
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `cov()` function computes the covariance between two streams by first joining the streams,
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---
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title: covariance() function
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description: The covariance() function computes the covariance between two columns.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/covariance
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menu:
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v2_0_ref:
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name: covariance
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `covariance()` function computes the covariance between two columns.
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@ -1,11 +1,13 @@
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---
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title: derivative() function
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description: The derivative() function computes the rate of change per unit of time between subsequent non-null records.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/derivative
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menu:
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v2_0_ref:
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name: derivative
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `derivative()` function computes the rate of change per [`unit`](#unit) of time between subsequent non-null records.
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@ -1,11 +1,13 @@
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---
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title: difference() function
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description: The difference() function computes the difference between subsequent non-null records.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/difference
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menu:
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v2_0_ref:
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name: difference
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `difference()` function computes the difference between subsequent records.
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@ -1,11 +1,13 @@
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---
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title: histogramQuantile() function
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description: The `histogramQuantile()` function approximates a quantile given a histogram that approximates the cumulative distribution of the dataset.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/histogramquantile
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menu:
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v2_0_ref:
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name: histogramQuantile
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `histogramQuantile()` function approximates a quantile given a histogram that
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---
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title: increase() function
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description: The increase() function calculates the total non-negative difference between values in a table.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/increase
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menu:
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v2_0_ref:
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name: increase
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `increase()` function calculates the total non-negative difference between values in a table.
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---
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title: integral() function
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description: The integral() function computes the area under the curve per unit of time of subsequent non-null records.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/integral
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menu:
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v2_0_ref:
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name: integral
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `integral()` function computes the area under the curve per [`unit`](#unit) of time of subsequent non-null records.
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---
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title: mean() function
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description: The mean() function computes the mean or average of non-null records in the input table.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/mean
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menu:
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v2_0_ref:
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name: mean
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `mean()` function computes the mean or average of non-null records in the input table.
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---
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title: median() function
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description: The `median()` function returns the median `_value` of an input table or all non-null records in the input table with values that fall within the 50th percentile.
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description: The `median()` function returns the median `_value` of an input table or all non-null records in the input table with values that fall within the 50th percentile
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/median
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menu:
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v2_0_ref:
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name: median
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `median()` function is a special application of the [`percentile()` function](/v2.0/reference/flux/functions/transformations/aggregates/percentile)
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---
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title: pearsonr() function
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description: The pearsonr() function computes the Pearson R correlation coefficient between two streams by first joining the streams, then performing the covariance operation normalized to compute R.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/pearsonr
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menu:
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v2_0_ref:
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name: pearsonr
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parent: Aggregates
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weight: 401
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parent: built-in-aggregates
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weight: 501
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---
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The `pearsonr()` function computes the Pearson R correlation coefficient between two streams
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---
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title: percentile() function
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description: The percentile() function outputs non-null records with values that fall within the specified percentile or the non-null record with the value that represents the specified percentile.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/percentile
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menu:
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||||
v2_0_ref:
|
||||
name: percentile
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||||
parent: Aggregates
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||||
weight: 401
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||||
parent: built-in-aggregates
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weight: 501
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---
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The `percentile()` function returns records from an input table with `_value`s that fall within
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@ -1,11 +1,13 @@
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---
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title: skew() function
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description: The skew() function outputs the skew of non-null records as a float.
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aliases:
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- /v2.0/reference/flux/functions/transformations/aggregates/skew
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menu:
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||||
v2_0_ref:
|
||||
name: skew
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||||
parent: Aggregates
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||||
weight: 401
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||||
parent: built-in-aggregates
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||||
weight: 501
|
||||
---
|
||||
|
||||
The `skew()` function outputs the skew of non-null records as a float.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: spread() function
|
||||
description: The spread() function outputs the difference between the minimum and maximum values in each specified column.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/aggregates/spread
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: spread
|
||||
parent: Aggregates
|
||||
weight: 401
|
||||
parent: built-in-aggregates
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `spread()` function outputs the difference between the minimum and maximum values in each specified column.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: stddev() function
|
||||
description: The stddev() function computes the standard deviation of non-null records in specified columns.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/aggregates/stddev
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: stddev
|
||||
parent: Aggregates
|
||||
weight: 401
|
||||
parent: built-in-aggregates
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `stddev()` function computes the standard deviation of non-null records in specified columns.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: sum() function
|
||||
description: The sum() function computes the sum of non-null records in specified columns.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/aggregates/sum
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: sum
|
||||
parent: Aggregates
|
||||
weight: 401
|
||||
parent: built-in-aggregates
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `sum()` function computes the sum of non-null records in specified columns.
|
||||
|
|
@ -3,12 +3,14 @@ title: columns() function
|
|||
description: >
|
||||
The columns() function lists the column labels of input tables.
|
||||
For each input table, it outputs a table with the same group key columns,
|
||||
plus a new column containing the labels of the input table's columns.
|
||||
plus a new column containing the labels of the input table's columns.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/columns
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: columns
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `columns()` function lists the column labels of input tables.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: cumulativeSum() function
|
||||
description: The cumulativeSum() function computes a running sum for non-null records in the table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/cumulativesum
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: cumulativeSum
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `cumulativeSum()` function computes a running sum for non-null records in the table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: drop() function
|
||||
description: The drop() function removes specified columns from a table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/drop
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: drop
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `drop()` function removes specified columns from a table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: duplicate() function
|
||||
description: The duplicate() function duplicates a specified column in a table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/duplicate
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: duplicate
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `duplicate()` function duplicates a specified column in a table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: fill() function
|
||||
description: The fill() function replaces all null values in an input stream and replace them with a non-null value.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/fill
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: fill
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `fill()` function replaces all null values in an input stream with a non-null value.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: filter() function
|
||||
description: The filter() function filters data based on conditions defined in a predicate function (fn).
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/filter
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: filter
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `filter()` function filters data based on conditions defined in a predicate function ([`fn`](#fn)).
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: group() function
|
||||
description: The group() function groups records based on their values for specific columns.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/group
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: group
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `group()` function groups records based on their values for specific columns.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: histogram() function
|
||||
description: The histogram() function approximates the cumulative distribution of a dataset by counting data frequencies for a list of bins.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/histogram
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: histogram
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `histogram()` function approximates the cumulative distribution of a dataset by counting data frequencies for a list of bins.
|
||||
|
|
@ -3,11 +3,12 @@ title: influxFieldsAsCols() function
|
|||
description: The influxFieldsAsCols() function is pivots a table and automatically aligns fields within each input table that have the same timestamp.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/inputs/fromrows
|
||||
- /v2.0/reference/flux/functions/transformations/influxfieldsascols
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: influxFieldsAsCols
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `influxFieldsAsCols()` function is a special application of the `pivot()` function that
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: join() function
|
||||
description: The join() function merges two or more input streams whose values are equal on a set of common columns into a single output stream.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/join
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: join
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `join()` function merges two or more input streams whose values are equal on
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: keep() function
|
||||
description: The keep() function returns a table containing only the specified columns.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/keep
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: keep
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `keep()` function returns a table containing only the specified columns, ignoring all others.
|
||||
|
|
@ -3,12 +3,14 @@ title: keys() function
|
|||
description: >
|
||||
The keys() function outputs the group key of input tables.
|
||||
For each input table, it outputs a table with the same group key columns, plus a
|
||||
_value column containing the labels of the input table's group key.
|
||||
_value column containing the labels of the input table's group key.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/keys
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: keys
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `keys()` function outputs the group key of input tables.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: keyValues() function
|
||||
description: The keyValues() function returns a table with the input table's group key plus two columns, _key and _value, that correspond to unique column + value pairs from the input table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/keyvalues
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: keyValues
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `keyValues()` function returns a table with the input table's group key plus two columns,
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: limit() function
|
||||
description: The limit() function limits the number of records in output tables to a fixed number (n).
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/limit
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: limit
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `limit()` function limits the number of records in output tables to a fixed number ([`n`](#n)).
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: map() function
|
||||
description: The map() function applies a function to each record in the input tables.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/map
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: map
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `map()` function applies a function to each record in the input tables.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: pivot() function
|
||||
description: The pivot() function collects values stored vertically (column-wise) in a table and aligns them horizontally (row-wise) into logical sets.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/pivot
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: pivot
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `pivot()` function collects values stored vertically (column-wise) in a table
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: range() function
|
||||
description: The range() function filters records based on time bounds.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/range
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: range
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `range()` function filters records based on time bounds.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: rename() function
|
||||
description: The rename() function renames specified columns in a table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/rename
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: rename
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `rename()` function renames specified columns in a table.
|
||||
|
|
@ -1,11 +1,14 @@
|
|||
---
|
||||
title: Flux selector functions
|
||||
description: Flux selector functions return one or more records based on function logic.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors
|
||||
menu:
|
||||
v2_0_ref:
|
||||
parent: Transformations
|
||||
parent: built-in-transformations
|
||||
name: Selectors
|
||||
weight: 301
|
||||
identifier: built-in-selectors
|
||||
weight: 401
|
||||
---
|
||||
|
||||
Flux selector functions return one or more records based on function logic.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: bottom() function
|
||||
description: The bottom() function sorts a table by columns and keeps only the bottom n records.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/bottom
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: bottom
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `bottom()` function sorts a table by columns and keeps only the bottom `n` records.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: distinct() function
|
||||
description: The distinct() function returns the unique values for a given column.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/distinct
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: distinct
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `distinct()` function returns the unique values for a given column.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: first() function
|
||||
description: The first() function selects the first non-null record from an input table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/first
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: first
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `first()` function selects the first non-null record from an input table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: highestAverage() function
|
||||
description: The highestAverage() function returns the top 'n' records from all groups using the average of each group.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/highestaverage
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: highestAverage
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `highestAverage()` function returns the top `n` records from all groups using the average of each group.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: highestCurrent() function
|
||||
description: The highestCurrent() function returns the top 'n' records from all groups using the last value of each group.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/highestcurrent
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: highestCurrent
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `highestCurrent()` function returns the top `n` records from all groups using the last value of each group.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: highestMax() function
|
||||
description: The highestMax() function returns the top 'n' records from all groups using the maximum of each group.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/highestmax
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: highestMax
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `highestMax()` function returns the top `n` records from all groups using the maximum of each group.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: last() function
|
||||
description: The last() function selects the last non-null record from an input table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/last
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: last
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `last()` function selects the last non-null record from an input table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: lowestAverage() function
|
||||
description: The lowestAverage() function returns the bottom 'n' records from all groups using the average of each group.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/lowestaverage
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: lowestAverage
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `lowestAverage()` function returns the bottom `n` records from all groups using the average of each group.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: lowestCurrent() function
|
||||
description: The lowestCurrent() function returns the bottom 'n' records from all groups using the last value of each group.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/lowestcurrent
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: lowestCurrent
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `lowestCurrent()` function returns the bottom `n` records from all groups using the last value of each group.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: lowestMin() function
|
||||
description: The lowestMin() function returns the bottom 'n' records from all groups using the minimum of each group.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/lowestmin
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: lowestMin
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `lowestMin()` function returns the bottom `n` records from all groups using the minimum of each group.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: max() function
|
||||
description: The max() function selects record with the highest _value from the input table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/max
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: max
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `max()` function selects record with the highest `_value` from the input table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: min() function
|
||||
description: The min() function selects record with the lowest _value from the input table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/min
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: min
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `min()` function selects record with the lowest `_value` from the input table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: sample() function
|
||||
description: The sample() function selects a subset of the records from the input table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/sample
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: sample
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `sample()` function selects a subset of the records from the input table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: top() function
|
||||
description: The top() function sorts a table by columns and keeps only the top n records.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/top
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: top
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `top()` function sorts a table by columns and keeps only the top `n` records.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: unique() function
|
||||
description: The unique() function returns all records containing unique values in a specified column.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/selectors/unique
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: unique
|
||||
parent: Selectors
|
||||
weight: 401
|
||||
parent: built-in-selectors
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `unique()` function returns all records containing unique values in a specified column.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: set() function
|
||||
description: The set() function assigns a static value to each record in the input table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/set
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: set
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `set()` function assigns a static value to each record in the input table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: shift() function
|
||||
description: The shift() function adds a fixed duration to time columns.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/shift
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: shift
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `shift()` function adds a fixed duration to time columns.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: sort() function
|
||||
description: The sort() function orders the records within each table.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/sort
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: sort
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `sort()` function orders the records within each table.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: stateCount() function
|
||||
description: The stateCount() function computes the number of consecutive records in a given state.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/statecount
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: stateCount
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `stateCount()` function computes the number of consecutive records in a given state.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: stateDuration() function
|
||||
description: The stateDuration() function computes the duration of a given state.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/stateduration
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: stateDuration
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `stateDuration()` function computes the duration of a given state.
|
||||
|
|
@ -1,11 +1,14 @@
|
|||
---
|
||||
title: Flux type conversion functions
|
||||
description: Flux type conversion functions convert columns of the input table into a specific data type.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/type-conversions
|
||||
menu:
|
||||
v2_0_ref:
|
||||
parent: Transformations
|
||||
parent: built-in-transformations
|
||||
name: Type conversions
|
||||
weight: 301
|
||||
identifier: built-in-type-conversions
|
||||
weight: 401
|
||||
---
|
||||
|
||||
Flux type conversion functions convert columns of the input table into a specific data type.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: toBool() function
|
||||
description: The toBool() function converts a value to a boolean.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/type-conversions/tobool
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: toBool
|
||||
parent: Type conversions
|
||||
weight: 401
|
||||
parent: built-in-type-conversions
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `toBool()` function converts a value to a boolean.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: toDuration() function
|
||||
description: The toDuration() function converts a value to a duration.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/type-conversions/toduration
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: toDuration
|
||||
parent: Type conversions
|
||||
weight: 401
|
||||
parent: built-in-type-conversions
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `toDuration()` function converts a value to a duration.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: toFloat() function
|
||||
description: The toFloat() function converts a value to a float.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/type-conversions/tofloat
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: toFloat
|
||||
parent: Type conversions
|
||||
weight: 401
|
||||
parent: built-in-type-conversions
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `toFloat()` function converts a value to a float.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: toInt() function
|
||||
description: The toInt() function converts a value to an integer.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/type-conversions/toint
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: toInt
|
||||
parent: Type conversions
|
||||
weight: 401
|
||||
parent: built-in-type-conversions
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `toInt()` function converts a value to an integer.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: toString() function
|
||||
description: The toString() function converts a value to a string.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/type-conversions/tostring
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: toString
|
||||
parent: Type conversions
|
||||
weight: 401
|
||||
parent: built-in-type-conversions
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `toString()` function converts a value to a string.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: toTime() function
|
||||
description: The toTime() function converts a value to a time.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/type-conversions/totime
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: toTime
|
||||
parent: Type conversions
|
||||
weight: 401
|
||||
parent: built-in-type-conversions
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `toTime()` function converts a value to a time.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: toUInt() function
|
||||
description: The toUInt() function converts a value to an uinteger.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/type-conversions/touint
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: toUInt
|
||||
parent: Type conversions
|
||||
weight: 401
|
||||
parent: built-in-type-conversions
|
||||
weight: 501
|
||||
---
|
||||
|
||||
The `toUInt()` function converts a value to an UInteger.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: union() function
|
||||
description: The union() function concatenates two or more input streams into a single output stream.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/union
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: union
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `union()` function concatenates two or more input streams into a single output stream.
|
||||
|
|
@ -1,11 +1,13 @@
|
|||
---
|
||||
title: window() function
|
||||
description: The window() function groups records based on a time value.
|
||||
aliases:
|
||||
- /v2.0/reference/flux/functions/transformations/window
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: window
|
||||
parent: Transformations
|
||||
weight: 301
|
||||
parent: built-in-transformations
|
||||
weight: 401
|
||||
---
|
||||
|
||||
The `window()` function groups records based on a time value.
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
---
|
||||
title: InfluxDB v1 Flux functions
|
||||
description: placeholder
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: InfluxDB v1
|
||||
parent: Flux functions
|
||||
weight: 202
|
||||
---
|
||||
|
||||
Placeholder
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
---
|
||||
title: String Flux functions
|
||||
description: placeholder
|
||||
menu:
|
||||
v2_0_ref:
|
||||
name: Strings
|
||||
parent: Flux functions
|
||||
weight: 203
|
||||
---
|
||||
|
||||
Placeholder
|
||||
Loading…
Reference in New Issue