Merge pull request #52 from influxdata/flux-0.18

Flux 0.18

content/v2.0/reference/flux/functions/_index.md

@@ -9,7 +9,6 @@ weight: 101
 ---
 
 Flux's functional syntax allows you to retrieve, transform, process, and output data easily.
-There is a large library of built-in functions, but you can also create your own
+There is a large library of built-in and importable functions:
-custom functions to perform operations that suit your needs.
 
 {{< children >}}

content/v2.0/reference/flux/functions/built-in/_index.md

@@ -0,0 +1,18 @@
+---
+title: Flux built-in functions
+description: >
+  Built-in functions provide a necessary foundation for working with data using Flux.
+  They do not require an import statement and are usable without any extra setup.
+menu:
+  v2_0_ref:
+    name: Built-in
+    parent: Flux functions
+weight: 201
+---
+
+Built-in functions provide a necessary foundation for working with data using Flux.
+Because these functions are "built-in," they do not require an `import` statement and are usable without any extra setup.
+
+Built-in functions are grouped into the following categories:
+
+{{< children >}}

content/v2.0/reference/flux/functions/built-in/inputs/_index.md

@@ -1,11 +1,14 @@
 ---
 title: Flux input functions
 description: Flux input functions define sources of data or or display information about data sources.
+aliases:
+  - /v2.0/reference/flux/functions/inputs
 menu:
   v2_0_ref:
-    parent: Flux functions
+    parent: Built-in
     name: Inputs
-weight: 201
+    identifier: built-in-inputs
+weight: 301
 ---
 
 Flux input functions define sources of data or display information about data sources.

content/v2.0/reference/flux/functions/built-in/inputs/buckets.md

@@ -1,11 +1,13 @@
 ---
 title: buckets() function
 description: The buckets() function returns a list of buckets in the organization.
+aliases:
+  - /v2.0/reference/flux/functions/inputs/buckets
 menu:
   v2_0_ref:
     name: buckets
-    parent: Inputs
+    parent: built-in-inputs
-weight: 301
+weight: 401
 ---
 
 The `buckets()` function returns a list of buckets in the organization.

content/v2.0/reference/flux/functions/built-in/inputs/from.md

@@ -1,11 +1,13 @@
 ---
 title: from() function
 description: The from() function retrieves data from an InfluxDB data source.
+aliases:
+  - /v2.0/reference/flux/functions/inputs/from
 menu:
   v2_0_ref:
     name: from
-    parent: Inputs
+    parent: built-in-inputs
-weight: 301
+weight: 401
 ---
 
 The `from()` function retrieves data from an InfluxDB data source.

content/v2.0/reference/flux/functions/built-in/inputs/fromcsv.md

@@ -1,11 +1,13 @@
 ---
 title: fromCSV() function
 description: The fromCSV() function retrieves data from a CSV data source.
+aliases:
+  - /v2.0/reference/flux/functions/inputs/fromcsv
 menu:
   v2_0_ref:
     name: fromCSV
-    parent: Inputs
+    parent: built-in-inputs
-weight: 301
+weight: 401
 ---
 
 The `fromCSV()` function retrieves data from a comma-separated value (CSV) data source.

content/v2.0/reference/flux/functions/built-in/misc/_index.md

@@ -1,11 +1,14 @@
 ---
 title: Flux miscellaneous functions
 description: Flux provides miscellaneous functions that serve purposes other than retrieving, transforming, or outputting data.
+aliases:
+  - /v2.0/reference/flux/functions/misc
 menu:
   v2_0_ref:
-    parent: Flux functions
+    parent: Built-in
     name: Miscellaneous
-weight: 205
+    identifier: built-in-misc
+weight: 305
 ---
 
 Flux functions primarily retrieve, shape and transform, then output data, however

content/v2.0/reference/flux/functions/built-in/misc/intervals.md

@@ -1,11 +1,13 @@
 ---
 title: intervals() function
 description: The intervals() function generates a set of time intervals over a range of time.
+aliases:
+  - /v2.0/reference/flux/functions/misc/intervals
 menu:
   v2_0_ref:
     name: intervals
-    parent: Miscellaneous
+    parent: built-in-misc
-weight: 301
+weight: 401
 ---
 
 The `intervals()` function generates a set of time intervals over a range of time.
@@ -16,9 +18,13 @@ The generator is then used to produce the set of intervals.
 The set of intervals includes all intervals that intersect with the initial range of time.
 
 {{% note %}}
-The `intervals()` function is designed to be used with the intervals parameter of the [`window()` function](/v2.0/reference/flux/functions/transformations/window).
+The `intervals()` function is designed to be used with the intervals parameter
+of the [`window()` function](/v2.0/reference/flux/functions/transformations/window).
 {{% /note %}}
 
+By default the end boundary of an interval will align with the Unix epoch (zero time)
+modified by the offset of the `location` option.
+
 _**Function type:** Miscellaneous_  
 _**Output data type:** Object_
 
@@ -44,9 +50,9 @@ Defaults to the value of the `every` duration.
 _**Data type:** Duration_
 
 ### offset
-The offset duration relative to the location offset.
+The duration by which to shift the window boundaries.
 It can be negative, indicating that the offset goes backwards in time.
-Defaults to `0h`.
+Defaults to `0`, which will align window end boundaries with the `every` duration.
 
 _**Data type:** Duration_
 

content/v2.0/reference/flux/functions/built-in/misc/linearbins.md

@@ -1,11 +1,13 @@
 ---
 title: linearBins() function
 description: The linearBins() function generates a list of linearly separated floats.
+aliases:
+  - /v2.0/reference/flux/functions/misc/linearbins
 menu:
   v2_0_ref:
     name: linearBins
-    parent: Miscellaneous
+    parent: built-in-misc
-weight: 301
+weight: 401
 ---
 
 The `linearBins()` function generates a list of linearly separated floats.

content/v2.0/reference/flux/functions/built-in/misc/logarithmicbins.md

@@ -1,11 +1,13 @@
 ---
 title: logarithmicBins() function
 description: The logarithmicBins() function generates a list of exponentially separated floats.
+aliases:
+  - /v2.0/reference/flux/functions/misc/logarithmicbins
 menu:
   v2_0_ref:
     name: logarithmicBins
-    parent: Miscellaneous
+    parent: built-in-misc
-weight: 301
+weight: 401
 ---
 
 The `logarithmicBins()` function generates a list of exponentially separated floats.

content/v2.0/reference/flux/functions/built-in/misc/systemtime.md

@@ -1,11 +1,13 @@
 ---
 title: systemTime() function
 description: The systemTime() function returns the current system time.
+aliases:
+  - /v2.0/reference/flux/functions/misc/systemtime
 menu:
   v2_0_ref:
     name: systemTime
-    parent: Miscellaneous
+    parent: built-in-misc
-weight: 301
+weight: 401
 ---
 
 The `systemTime()` function returns the current system time.

content/v2.0/reference/flux/functions/built-in/outputs/_index.md

@@ -1,11 +1,14 @@
 ---
 title: Flux output functions
 description: Flux output functions yield results or send data to a specified output destination.
+aliases:
+  - /v2.0/reference/flux/functions/outputs
 menu:
   v2_0_ref:
-    parent: Flux functions
+    parent: Built-in
     name: Outputs
-weight: 202
+    identifier: built-in-outputs
+weight: 302
 ---
 
 Flux output functions yield results or send data to a specified output destination.

content/v2.0/reference/flux/functions/built-in/outputs/to.md

@@ -1,11 +1,13 @@
 ---
 title: to() function
 description: The to() function writes data to an InfluxDB v2.0 bucket.
+aliases:
+  - /v2.0/reference/flux/functions/outputs/to
 menu:
   v2_0_ref:
     name: to
-    parent: Outputs
+    parent: built-in-outputs
-weight: 301
+weight: 401
 ---
 
 The `to()` function writes data to an **InfluxDB v2.0** bucket.

content/v2.0/reference/flux/functions/built-in/outputs/yield.md

@@ -1,11 +1,13 @@
 ---
 title: yield() function
 description: The yield() function indicates the input tables received should be delivered as a result of the query.
+aliases:
+  - /v2.0/reference/flux/functions/outputs/yield
 menu:
   v2_0_ref:
     name: yield
-    parent: Outputs
+    parent: built-in-outputs
-weight: 301
+weight: 401
 ---
 
 The `yield()` function indicates the input tables received should be delivered as a result of the query.

content/v2.0/reference/flux/functions/built-in/transformations/_index.md

@@ -1,11 +1,14 @@
 ---
 title: Flux transformation functions
 description: Flux transformation functions transform and shape your data in specific ways.
+aliases:
+  - /v2.0/reference/flux/functions/transformations
 menu:
   v2_0_ref:
-    parent: Flux functions
+    parent: Built-in
     name: Transformations
-weight: 203
+    identifier: built-in-transformations
+weight: 303
 ---
 
 Flux transformation functions transform or shape your data in specific ways.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/_index.md

@@ -1,11 +1,14 @@
 ---
 title: Flux aggregate functions
 description: Flux aggregate functions take values from an input table and aggregate them in some way.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates
 menu:
   v2_0_ref:
-    parent: Transformations
+    parent: built-in-transformations
     name: Aggregates
-weight: 301
+    identifier: built-in-aggregates
+weight: 401
 ---
 
 Flux aggregate functions take values from an input table and aggregate them in some way.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/aggregatewindow.md

@@ -1,11 +1,13 @@
 ---
 title: aggregateWindow() function
 description: The aggregateWindow() function applies an aggregate function to fixed windows of time.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/aggregatewindow
 menu:
   v2_0_ref:
     name: aggregateWindow
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `aggregateWindow()` function applies an aggregate function to fixed windows of time.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/count.md

@@ -1,11 +1,13 @@
 ---
 title: count() function
 description: The count() function outputs the number of non-null records in each aggregated column.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/count
 menu:
   v2_0_ref:
     name: count
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `count()` function outputs the number of records in each aggregated column.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/cov.md

@@ -1,11 +1,13 @@
 ---
 title: cov() function
 description: The cov() function computes the covariance between two streams by first joining the streams, then performing the covariance operation.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/cov
 menu:
   v2_0_ref:
     name: cov
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `cov()` function computes the covariance between two streams by first joining the streams,

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/covariance.md

@@ -1,11 +1,13 @@
 ---
 title: covariance() function
 description: The covariance() function computes the covariance between two columns.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/covariance
 menu:
   v2_0_ref:
     name: covariance
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `covariance()` function computes the covariance between two columns.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/derivative.md

@@ -1,11 +1,13 @@
 ---
 title: derivative() function
 description: The derivative() function computes the rate of change per unit of time between subsequent non-null records.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/derivative
 menu:
   v2_0_ref:
     name: derivative
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `derivative()` function computes the rate of change per [`unit`](#unit) of time between subsequent non-null records.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/difference.md

@@ -1,11 +1,13 @@
 ---
 title: difference() function
 description: The difference() function computes the difference between subsequent non-null records.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/difference
 menu:
   v2_0_ref:
     name: difference
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `difference()` function computes the difference between subsequent records.  

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/histogramquantile.md

@@ -1,11 +1,13 @@
 ---
 title: histogramQuantile() function
 description: The `histogramQuantile()` function approximates a quantile given a histogram that approximates the cumulative distribution of the dataset.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/histogramquantile
 menu:
   v2_0_ref:
     name: histogramQuantile
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `histogramQuantile()` function approximates a quantile given a histogram that

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/increase.md

@@ -1,11 +1,13 @@
 ---
 title: increase() function
 description: The increase() function calculates the total non-negative difference between values in a table.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/increase
 menu:
   v2_0_ref:
     name: increase
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `increase()` function calculates the total non-negative difference between values in a table.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/integral.md

@@ -1,11 +1,13 @@
 ---
 title: integral() function
 description: The integral() function computes the area under the curve per unit of time of subsequent non-null records.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/integral
 menu:
   v2_0_ref:
     name: integral
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `integral()` function computes the area under the curve per [`unit`](#unit) of time of subsequent non-null records.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/mean.md

@@ -1,11 +1,13 @@
 ---
 title: mean() function
 description: The mean() function computes the mean or average of non-null records in the input table.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/mean
 menu:
   v2_0_ref:
     name: mean
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `mean()` function computes the mean or average of non-null records in the input table.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/median.md

@@ -1,11 +1,13 @@
 ---
 title: median() function
-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.
+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
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/median
 menu:
   v2_0_ref:
     name: median
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `median()` function is a special application of the [`percentile()` function](/v2.0/reference/flux/functions/transformations/aggregates/percentile)

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/pearsonr.md

@@ -1,11 +1,13 @@
 ---
 title: pearsonr() function
 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.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/pearsonr
 menu:
   v2_0_ref:
     name: pearsonr
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `pearsonr()` function computes the Pearson R correlation coefficient between two streams

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/percentile.md

@@ -1,11 +1,13 @@
 ---
 title: percentile() function
 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.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/percentile
 menu:
   v2_0_ref:
     name: percentile
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `percentile()` function returns records from an input table with `_value`s that fall within

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/skew.md

@@ -1,11 +1,13 @@
 ---
 title: skew() function
 description: The skew() function outputs the skew of non-null records as a float.
+aliases:
+  - /v2.0/reference/flux/functions/transformations/aggregates/skew
 menu:
   v2_0_ref:
     name: skew
-    parent: Aggregates
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `skew()` function outputs the skew of non-null records as a float.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/spread.md

@@ -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
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `spread()` function outputs the difference between the minimum and maximum values in each specified column.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/stddev.md

@@ -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
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `stddev()` function computes the standard deviation of non-null records in specified columns.

content/v2.0/reference/flux/functions/built-in/transformations/aggregates/sum.md

@@ -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
+    parent: built-in-aggregates
-weight: 401
+weight: 501
 ---
 
 The `sum()` function computes the sum of non-null records in specified columns.

content/v2.0/reference/flux/functions/built-in/transformations/columns.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `columns()` function lists the column labels of input tables.

content/v2.0/reference/flux/functions/built-in/transformations/cumulativesum.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `cumulativeSum()` function computes a running sum for non-null records in the table.

content/v2.0/reference/flux/functions/built-in/transformations/drop.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `drop()` function removes specified columns from a table.

content/v2.0/reference/flux/functions/built-in/transformations/duplicate.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `duplicate()` function duplicates a specified column in a table.

content/v2.0/reference/flux/functions/built-in/transformations/fill.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `fill()` function replaces all null values in an input stream with a non-null value.

content/v2.0/reference/flux/functions/built-in/transformations/filter.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `filter()` function filters data based on conditions defined in a predicate function ([`fn`](#fn)).

content/v2.0/reference/flux/functions/built-in/transformations/group.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `group()` function groups records based on their values for specific columns.

content/v2.0/reference/flux/functions/built-in/transformations/histogram.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `histogram()` function approximates the cumulative distribution of a dataset by counting data frequencies for a list of bins.

content/v2.0/reference/flux/functions/built-in/transformations/join.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `join()` function merges two or more input streams whose values are equal on

content/v2.0/reference/flux/functions/built-in/transformations/keep.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `keep()` function returns a table containing only the specified columns, ignoring all others.

content/v2.0/reference/flux/functions/built-in/transformations/keys.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `keys()` function outputs the group key of input tables.

content/v2.0/reference/flux/functions/built-in/transformations/keyvalues.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `keyValues()` function returns a table with the input table's group key plus two columns,

content/v2.0/reference/flux/functions/built-in/transformations/limit.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `limit()` function limits the number of records in output tables to a fixed number ([`n`](#n)).

content/v2.0/reference/flux/functions/built-in/transformations/map.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `map()` function applies a function to each record in the input tables.

content/v2.0/reference/flux/functions/built-in/transformations/pivot.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `pivot()` function collects values stored vertically (column-wise) in a table

content/v2.0/reference/flux/functions/built-in/transformations/range.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `range()` function filters records based on time bounds.

content/v2.0/reference/flux/functions/built-in/transformations/rename.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `rename()` function renames specified columns in a table.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/_index.md

@@ -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.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/bottom.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `bottom()` function sorts a table by columns and keeps only the bottom `n` records.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/distinct.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `distinct()` function returns the unique values for a given column.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/first.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `first()` function selects the first non-null record from an input table.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/highestaverage.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `highestAverage()` function returns the top `n` records from all groups using the average of each group.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/highestcurrent.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `highestCurrent()` function returns the top `n` records from all groups using the last value of each group.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/highestmax.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `highestMax()` function returns the top `n` records from all groups using the maximum of each group.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/last.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `last()` function selects the last non-null record from an input table.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/lowestaverage.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `lowestAverage()` function returns the bottom `n` records from all groups using the average of each group.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/lowestcurrent.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `lowestCurrent()` function returns the bottom `n` records from all groups using the last value of each group.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/lowestmin.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `lowestMin()` function returns the bottom `n` records from all groups using the minimum of each group.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/max.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `max()` function selects record with the highest `_value` from the input table.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/min.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `min()` function selects record with the lowest `_value` from the input table.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/sample.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `sample()` function selects a subset of the records from the input table.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/top.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `top()` function sorts a table by columns and keeps only the top `n` records.

content/v2.0/reference/flux/functions/built-in/transformations/selectors/unique.md

@@ -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
+    parent: built-in-selectors
-weight: 401
+weight: 501
 ---
 
 The `unique()` function returns all records containing unique values in a specified column.

content/v2.0/reference/flux/functions/built-in/transformations/set.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `set()` function assigns a static value to each record in the input table.

content/v2.0/reference/flux/functions/built-in/transformations/shift.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `shift()` function adds a fixed duration to time columns.

content/v2.0/reference/flux/functions/built-in/transformations/sort.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `sort()` function orders the records within each table.

content/v2.0/reference/flux/functions/built-in/transformations/statecount.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `stateCount()` function computes the number of consecutive records in a given state.

content/v2.0/reference/flux/functions/built-in/transformations/stateduration.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `stateDuration()` function computes the duration of a given state.

content/v2.0/reference/flux/functions/built-in/transformations/type-conversions/_index.md

@@ -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.

content/v2.0/reference/flux/functions/built-in/transformations/type-conversions/tobool.md

@@ -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
+    parent: built-in-type-conversions
-weight: 401
+weight: 501
 ---
 
 The `toBool()` function converts a value to a boolean.

content/v2.0/reference/flux/functions/built-in/transformations/type-conversions/toduration.md

@@ -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
+    parent: built-in-type-conversions
-weight: 401
+weight: 501
 ---
 
 The `toDuration()` function converts a value to a duration.

content/v2.0/reference/flux/functions/built-in/transformations/type-conversions/tofloat.md

@@ -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
+    parent: built-in-type-conversions
-weight: 401
+weight: 501
 ---
 
 The `toFloat()` function converts a value to a float.

content/v2.0/reference/flux/functions/built-in/transformations/type-conversions/toint.md

@@ -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
+    parent: built-in-type-conversions
-weight: 401
+weight: 501
 ---
 
 The `toInt()` function converts a value to an integer.

content/v2.0/reference/flux/functions/built-in/transformations/type-conversions/tostring.md

@@ -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
+    parent: built-in-type-conversions
-weight: 401
+weight: 501
 ---
 
 The `toString()` function converts a value to a string.

content/v2.0/reference/flux/functions/built-in/transformations/type-conversions/totime.md

@@ -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
+    parent: built-in-type-conversions
-weight: 401
+weight: 501
 ---
 
 The `toTime()` function converts a value to a time.

content/v2.0/reference/flux/functions/built-in/transformations/type-conversions/touint.md

@@ -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
+    parent: built-in-type-conversions
-weight: 401
+weight: 501
 ---
 
 The `toUInt()` function converts a value to an UInteger.

content/v2.0/reference/flux/functions/built-in/transformations/union.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `union()` function concatenates two or more input streams into a single output stream.

content/v2.0/reference/flux/functions/built-in/transformations/window.md

@@ -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
+    parent: built-in-transformations
-weight: 301
+weight: 401
 ---
 
 The `window()` function groups records based on a time value.
@@ -14,6 +16,9 @@ Those columns are added to the group key of the output tables.
 
 A single input record will be placed into zero or more output tables, depending on the specific windowing function.
 
+By default the start boundary of a window will align with the Unix epoch (zero time)
+modified by the offset of the `location` option.
+
 _**Function type:** Transformation_  
 _**Output data type:** Object_
 
@@ -21,10 +26,11 @@ _**Output data type:** Object_
 window(
   every: 5m,
   period: 5m,
-  start: 12h,
+  offset: 12h,
   timeColumn: "_time",
   startColumn: "_start",
-  stopColumn: "_stop"
+  stopColumn: "_stop",
+  createEmpty: false
 )
 
 // OR
@@ -33,7 +39,8 @@ window(
   intervals: intervals(every: 5m, period: 5m, offset: 12h),
   timeColumn: "_time",
   startColumn: "_start",
-  stopColumn: "_stop"
+  stopColumn: "_stop",
+  createEmpty: false
 )
 ```
 
@@ -57,10 +64,10 @@ Defaults to `every` value.
 
 _**Data type:** Duration_
 
-### start
+### offset
-The start window time relative to the [`location`](/v2.0/reference/flux/language/options/#location) offset.
+Offset is the duration by which to shift the window boundaries.
-It can be negative, indicating that the start goes backwards in time.
+It can be negative, indicating that the offset goes backwards in time.
-The default aligns the window boundaries with `now`.
+Defaults to 0, which will align window end boundaries with the `every` duration.
 
 _**Data type:** Duration_
 
@@ -96,6 +103,10 @@ Defaults to `"_stop"`.
 
 _**Data type:** String_
 
+### createEmpty
+Specifies whether empty tables should be created.
+Defaults to `false`.
+
 ## Examples
 
 #### Window data into 10 minute intervals

content/v2.0/reference/flux/functions/influxdb-v1/_index.md

@@ -0,0 +1,22 @@
+---
+title: Flux InfluxDB v1 functions
+description: >
+  InfluxDB v1 Flux functions provide tools for managing data from an InfluxDB v1.x
+  database or structured using the InfluxDB v1 data structure.
+  To use them, import the "influxdata/influxdb/v1" package.
+menu:
+  v2_0_ref:
+    name: InfluxDB v1
+    parent: Flux functions
+weight: 202
+---
+
+InfluxDB v1 Flux functions provide tools for managing data from an InfluxDB v1.x
+database or structured using the InfluxDB v1 data structure.
+To use them, import the `influxdata/influxdb/v1` package:
+
+```js
+import "influxdata/influxdb/v1"
+```
+
+{{< children type="functions" show="pages" >}}

content/v2.0/reference/flux/functions/influxdb-v1/fieldsascols.md

@@ -0,0 +1,48 @@
+---
+title: v1.fieldsAsCols() function
+description: The v1.fieldsAsCols() 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: v1.fieldsAsCols
+    parent: InfluxDB v1
+weight: 301
+---
+
+The `v1.fieldsAsCols()` function is a special application of the `pivot()` function that
+automatically aligns fields within each input table that have the same timestamp.
+
+_**Function type:** Transformation_
+
+```js
+import "influxdata/influxdb/v1"
+
+v1.fieldsAsCols()
+```
+
+## Examples
+```js
+import "influxdata/influxdb/v1"
+
+from(bucket:"telegraf/autogen")
+  |> range(start: -1h)
+  |> filter(fn: (r) => r._measurement == "cpu")
+  |> v1.fieldsAsCols()
+  |> keep(columns: ["_time", "cpu", "usage_idle", "usage_user"])
+```
+
+## Function definition
+```js
+fieldsAsCols = (tables=<-) =>
+  tables
+    |> pivot(
+      rowKey:["_time"],
+      columnKey: ["_field"],
+      valueColumn: "_value"
+    )
+```
+
+_**Used functions:**
+[pivot()](/v2.0/reference/flux/functions/built-in/transformations/pivot)_

content/v2.0/reference/flux/functions/influxdb-v1/measurements.md

@@ -0,0 +1,34 @@
+---
+title: v1.measurements() function
+description: The v1.measurements() function returns a list of measurements in a specific bucket.
+menu:
+  v2_0_ref:
+    name: v1.measurements
+    parent: InfluxDB v1
+weight: 301
+---
+
+The `v1.measurements()` function returns a list of measurements in a specific bucket.
+The return value is always a single table with a single column, `_value`.
+
+```js
+import "influxdata/influxdb/v1"
+
+v1.measurements(bucket: "example-bucket")
+```
+
+## Parameters
+
+### bucket
+The bucket from which to list measurements.
+
+_**Data type:** String_
+
+## Function definition
+```js
+measurements = (bucket) =>
+  tagValues(bucket: bucket, tag: "_measurement")
+```
+
+_**Used functions:**
+[tagValues()](/v2.0/reference/flux/functions/influxdb-v1/tagvalues)_

content/v2.0/reference/flux/functions/influxdb-v1/measurementtagkeys.md

@@ -0,0 +1,44 @@
+---
+title: v1.measurementTagKeys() function
+description: The v1.measurementTagKeys() function returns a list of tag keys for a specific measurement.
+menu:
+  v2_0_ref:
+    name: v1.measurementTagKeys
+    parent: InfluxDB v1
+weight: 301
+---
+
+The `v1.measurementTagKeys()` function returns a list of tag keys for a specific measurement.
+The return value is always a single table with a single column, `_value`.
+
+```js
+import "influxdata/influxdb/v1"
+
+v1.measurementTagKeys(
+  bucket: "example-bucket",
+  measurement: "cpu"
+)
+```
+
+## Parameters
+
+### bucket
+The bucket from which to return tag keys for a specific measurement.
+
+_**Data type:** String_
+
+### measurement
+The measurement from which to return tag keys.
+
+_**Data type:** String_
+
+## Function definition
+```js
+measurementTagKeys = (bucket, measurement) =>
+  tagKeys(
+    bucket: bucket,
+    predicate: (r) => r._measurement == measurement)
+```
+
+_**Used functions:**
+[tagKeys()](/v2.0/reference/flux/functions/influxdb-v1/tagkeys)_

content/v2.0/reference/flux/functions/influxdb-v1/measurementtagvalues.md

@@ -0,0 +1,55 @@
+---
+title: v1.measurementTagValues() function
+description: The v1.measurementTagValues() function returns a list of tag values for a specific measurement.
+menu:
+  v2_0_ref:
+    name: v1.measurementTagValues
+    parent: InfluxDB v1
+weight: 301
+---
+
+The `v1.measurementTagValues()` function returns a list of tag values for a specific measurement.
+The return value is always a single table with a single column, `_value`.
+
+
+
+```js
+import "influxdata/influxdb/v1"
+
+v1.measurementTagValues(
+  bucket: "example-bucket",
+  measurement: "cpu",
+  tag: "host"
+)
+```
+
+## Parameters
+
+### bucket
+The bucket from which to return tag values for a specific measurement.
+
+_**Data type:** String_
+
+### measurement
+The measurement from which to return tag values.
+
+_**Data type:** String_
+
+### tag
+The tag from which to return all unique values.
+
+_**Data type:** String_
+
+
+## Function definition
+```js
+measurementTagValues = (bucket, measurement, tag) =>
+  tagValues(
+    bucket: bucket,
+    tag: tag,
+    predicate: (r) => r._measurement == measurement
+  )
+```
+
+_**Used functions:**
+[tagValues()](/v2.0/reference/flux/functions/influxdb-v1/tagvalues)_

content/v2.0/reference/flux/functions/influxdb-v1/tagkeys.md

@@ -0,0 +1,70 @@
+---
+title: v1.tagKeys() function
+description: The v1.tagKeys() function returns a list of tag keys for all series that match the predicate.
+menu:
+  v2_0_ref:
+    name: v1.tagKeys
+    parent: InfluxDB v1
+weight: 301
+---
+
+The `v1.tagKeys()` function returns a list of tag keys for all series that match the [`predicate`](#predicate).
+The return value is always a single table with a single column, `_value`.
+
+```js
+import "influxdata/influxdb/v1"
+
+v1.tagKeys(
+  bucket: "example-bucket",
+  predicate: (r) => true,
+  start: -30d
+)
+```
+
+## Parameters
+
+### bucket
+The bucket from which to list tag keys.
+
+_**Data type:** String_
+
+### predicate
+The predicate function that filters tag keys.
+_Defaults to `(r) => true`._
+
+_**Data type:** Function_
+
+### start
+Specifies the oldest time to be included in the results.
+_Defaults to `-30d`._
+
+Relative start times are defined using negative durations.
+Negative durations are relative to now.
+Absolute start times are defined using timestamps.
+
+_**Data type:** Duration_
+
+## Examples
+```js
+import "influxdata/influxdb/v1"
+
+v1.tagKeys(bucket: "my-bucket")
+```
+
+
+## Function definition
+```js
+tagKeys = (bucket, predicate=(r) => true, start=-30d) =>
+  from(bucket: bucket)
+    |> range(start: start)
+    |> filter(fn: predicate)
+    |> keys()
+    |> keep(columns: ["_value"])
+```
+
+_**Used functions:**
+[from](/v2.0/reference/flux/functions/built-in/inputs/from/),
+[range](/v2.0/reference/flux/functions/built-in/transformations/range/),
+[filter](/v2.0/reference/flux/functions/built-in/transformations/filter/),
+[keys](/v2.0/reference/flux/functions/built-in/transformations/keys/),
+[keep](/v2.0/reference/flux/functions/built-in/transformations/keep/)_

content/v2.0/reference/flux/functions/influxdb-v1/tagvalues.md

@@ -0,0 +1,81 @@
+---
+title: v1.tagValues() function
+description: placeholder
+menu:
+  v2_0_ref:
+    name: v1.tagValues
+    parent: InfluxDB v1
+weight: 301
+---
+
+The `v1.tagValues()` function returns a list unique values for a given tag.
+The return value is always a single table with a single column, `_value`.
+
+
+```js
+import "influxdata/influxdb/v1"
+
+v1.tagValues(
+  bucket: "example-bucket",
+  tag: "host",
+  predicate: (r) => true,
+  start: -30d
+)
+```
+
+## Parameters
+
+### bucket
+The bucket from which to list tag values.
+
+_**Data type:** String_
+
+### tag
+The tag for which to return unique values.
+
+_**Data type:** String_
+
+### predicate
+The predicate function that filters tag values.
+_Defaults to `(r) => true`._
+
+_**Data type:** Function_
+
+### start
+Specifies the oldest time to be included in the results.
+_Defaults to `-30d`._
+
+Relative start times are defined using negative durations.
+Negative durations are relative to now.
+Absolute start times are defined using timestamps.
+
+_**Data type:** Duration_
+
+## Examples
+```js
+import "influxdata/influxdb/v1"
+
+v1.tagKeys(
+  bucket: "my-bucket",
+  tag: "host",
+)
+```
+
+## Function definition
+```js
+tagValues = (bucket, tag, predicate=(r) => true, start=-30d) =>
+  from(bucket: bucket)
+    |> range(start: start)
+    |> filter(fn: predicate)
+    |> group(columns: [tag])
+    |> distinct(column: tag)
+    |> keep(columns: ["_value"])
+```
+
+_**Used functions:**
+[from](/v2.0/reference/flux/functions/built-in/inputs/from/),
+[range](/v2.0/reference/flux/functions/built-in/transformations/range/),
+[filter](/v2.0/reference/flux/functions/built-in/transformations/filter/),
+[group](/v2.0/reference/flux/functions/built-in/transformations/group/),
+[distinct](/v2.0/reference/flux/functions/built-in/transformations/selectors/distinct/),
+[keep](/v2.0/reference/flux/functions/built-in/transformations/keep/)_

content/v2.0/reference/flux/functions/strings/_index.md

@@ -0,0 +1,20 @@
+---
+title: Flux string functions
+description: >
+  String functions provide tools for manipulating strings in Flux.
+  To use them, import the "strings" package.
+menu:
+  v2_0_ref:
+    name: Strings
+    parent: Flux functions
+weight: 203
+---
+
+String functions provide tools for manipulating strings in Flux.
+To use them, import the `strings` package:
+
+```js
+import "strings"
+```
+
+{{< children type="functions" show="pages" >}}

content/v2.0/reference/flux/functions/strings/title.md

@@ -0,0 +1,38 @@
+---
+title: strings.title() function
+description: The strings.title() function converts a string to title case.
+menu:
+  v2_0_ref:
+    name: strings.title
+    parent: Strings
+weight: 301
+---
+
+The `strings.title()` function converts a string to title case.
+
+_**Output data type:** String_
+
+```js
+import "strings"
+
+strings.title(v: "a flux of foxes")
+
+// returns "A Flux Of Foxes"
+```
+
+## Paramters
+
+### v
+The string value to convert.
+
+_**Data type:** String_
+
+## Examples
+
+###### Convert all values of a column to title case
+```js
+import "strings"
+
+data
+  |> map(fn:(r) => strings.title(v: r.pageTitle))
+```

content/v2.0/reference/flux/functions/strings/tolower.md

@@ -0,0 +1,38 @@
+---
+title: strings.toLower() function
+description: The strings.toLower() function converts a string to lower case.
+menu:
+  v2_0_ref:
+    name: strings.toLower
+    parent: Strings
+weight: 301
+---
+
+The `strings.toLower()` function converts a string to lower case.
+
+_**Output data type:** String_
+
+```js
+import "strings"
+
+strings.toLower(v: "KOALA")
+
+// returns "koala"
+```
+
+## Paramters
+
+### v
+The string value to convert.
+
+_**Data type:** String_
+
+## Examples
+
+###### Convert all values of a column to lower case
+```js
+import "strings"
+
+data
+  |> map(fn:(r) => strings.toLower(v: r.exclamation))
+```

content/v2.0/reference/flux/functions/strings/toupper.md

@@ -0,0 +1,38 @@
+---
+title: strings.toUpper() function
+description: The strings.toUpper() function converts a string to upper case.
+menu:
+  v2_0_ref:
+    name: strings.toUpper
+    parent: Strings
+weight: 301
+---
+
+The `strings.toUpper()` function converts a string to upper case.
+
+_**Output data type:** String_
+
+```js
+import "strings"
+
+strings.toUpper(v: "koala")
+
+// returns "KOALA"
+```
+
+## Paramters
+
+### v
+The string value to convert.
+
+_**Data type:** String_
+
+## Examples
+
+###### Convert all values of a column to upper case
+```js
+import "strings"
+
+data
+  |> map(fn:(r) => strings.toUpper(v: r.envVars))
+```

content/v2.0/reference/flux/functions/strings/trim.md

@@ -0,0 +1,47 @@
+---
+title: strings.trim() function
+description: >
+  The strings.trim() function removes leading and trailing characters specified
+  in the cutset from a string.
+menu:
+  v2_0_ref:
+    name: strings.trim
+    parent: Strings
+weight: 301
+---
+
+The `strings.trim()` function removes leading and trailing characters specified
+in the [`cutset`](#cutset) from a string.
+
+_**Output data type:** String_
+
+```js
+import "strings"
+
+strings.trim(v: ".abc.", cutset: ".")
+
+// returns "abc"
+```
+
+## Paramters
+
+### v
+The string value from which to trim characters.
+
+_**Data type:** String_
+
+### cutset
+The leading and trailing characters to trim from the string value.
+Only characters that match the `cutset` string exactly are trimmed.
+
+_**Data type:** String_
+
+## Examples
+
+###### Trim leading and trailing periods from all values in a column
+```js
+import "strings"
+
+data
+  |> map(fn:(r) => strings.trim(v: r.variables, cutset: "."))
+```

content/v2.0/reference/flux/functions/strings/trimspace.md

@@ -0,0 +1,38 @@
+---
+title: strings.trimSpace() function
+description: The strings.trimSpace() function removes leading and trailing spaces from a string.
+menu:
+  v2_0_ref:
+    name: strings.trimSpace
+    parent: Strings
+weight: 301
+---
+
+The `strings.trimSpace()` function removes leading and trailing spaces from a string.
+
+_**Output data type:** String_
+
+```js
+import "strings"
+
+strings.trimSpace(v: "  abc  ")
+
+// returns "abc"
+```
+
+## Paramters
+
+### v
+The string value from which to trim spaces.
+
+_**Data type:** String_
+
+## Examples
+
+###### Trim leading and trailing spaces from all values in a column
+```js
+import "strings"
+
+data
+  |> map(fn:(r) => strings.trimSpace(v: r.userInput))
+```

content/v2.0/reference/flux/functions/testing/_index.md

@@ -0,0 +1,19 @@
+---
+title: Flux testing functions
+description: >
+  Flux testing functions test piped-forward data in specific ways and return errors if the tests fail.
+menu:
+  v2_0_ref:
+    name: Testing
+    parent: Flux functions
+weight: 204
+---
+
+Flux testing functions test piped-forward data in specific ways and return errors if the tests fail.
+To use them, import the `testing` package:
+
+```js
+import "testing"
+```
+
+{{< children type="functions" show="pages" >}}

content/v2.0/reference/flux/functions/testing/assertempty.md

@@ -0,0 +1,41 @@
+---
+title: testing.assertEmpty() function
+description: The testing.assertEmpty() function tests if an input stream is empty.
+menu:
+  v2_0_ref:
+    name: testing.assertEmpty
+    parent: Testing
+    weight: 301
+---
+
+The `testing.assertEmpty()` function tests if an input stream is empty.
+If not empty, the function returns an error.
+
+_**Function type:** Test_  
+
+```js
+import "testing"
+
+testing.assertEmpty()
+```
+
+_The `testing.assertEmpty()` function can be used to perform in-line tests in a query._
+
+## Examples
+
+#### Check if there is a difference between streams
+This example uses the [`diff()` function](/flux/v0.x/functions/tests/diff)
+which outputs the diff for the two streams.
+The `.testing.assertEmpty()` function checks to see if the diff is empty.
+
+```js
+import "testing"
+
+got = from(bucket: "telegraf/autogen")
+  |> range(start: -15m)
+want = from(bucket: "backup_telegraf/autogen")
+  |> range(start: -15m)
+got
+  |> diff(want: want)
+  |> testing.assertEmpty()
+```

content/v2.0/reference/flux/functions/testing/assertequals.md

@@ -1,43 +1,45 @@
 ---
-title: assertEquals() function
+title: testing.assertEquals() function
-description: The assertEquals() function tests whether two streams have identical data.
+description: The testing.assertEquals() function tests whether two streams have identical data.
+aliases:
+  - /v2.0/reference/flux/functions/tests/assertequals
 menu:
   v2_0_ref:
-    name: assertEquals
+    name: testing.assertEquals
-    parent: Tests
+    parent: Testing
 weight: 301
 ---
 
-The `assertEquals()` function tests whether two streams have identical data.
+The `testing.assertEquals()` function tests whether two streams have identical data.
 If equal, the function outputs the tested data stream unchanged.
-If unequal, the function outputs an error.
+If unequal, the function returns an error.
-
-_**Function type:** Test_  
 
 ```js
-assertEquals(
+import "testing"
+
+testing.assertEquals(
   name: "streamEquality",
   got: got,
   want: want
 )
 ```
 
-_The `assertEquals()` function can be used to perform in-line tests in a query._
+_The `testing.assertEquals()` function can be used to perform in-line tests in a query._
 
 ## Parameters
 
-## name
+### name
 Unique name given to the assertion.
 
 _**Data type:** String_
 
-## got
+### got
 The stream containing data to test.
-Defaults to data piped-forward from another function (`<-`).
+Defaults to piped-forward data (`<-`).
 
 _**Data type:** Object_
 
-## want
+### want
 The stream that contains the expected data to test against.
 
 _**Data type:** Object_
@@ -47,21 +49,25 @@ _**Data type:** Object_
 
 ##### Assert of separate streams
 ```js
+import "testing"
+
 want = from(bucket: "backup-telegraf/autogen")
   |> range(start: -5m)
 
 got = from(bucket: "telegraf/autogen")
   |> range(start: -5m)
 
-assertEquals(got: got, want: want)
+testing.assertEquals(got: got, want: want)
 ```
 
 ##### Inline assertion
 ```js
+import "testing"
+
 want = from(bucket: "backup-telegraf/autogen")
   |> range(start: -5m)
 
 from(bucket: "telegraf/autogen")
   |> range(start: -5m)
-  |> assertEquals(want: want)
+  |> testing.assertEquals(want: want)
 ```

content/v2.0/reference/flux/functions/testing/diff.md

@@ -0,0 +1,66 @@
+---
+title: testing.diff() function
+description: The testing.diff() function produces a diff between two streams.
+menu:
+  v2_0_ref:
+    name: testing.diff
+    parent: Testing
+    weight: 301
+---
+
+The `testing.diff()` function produces a diff between two streams.
+
+_**Function type:** Test_  
+
+```js
+import "testing"
+
+testing.diff(got: stream2, want: stream1)
+```
+
+It matches tables from each stream with the same group keys.
+For each matched table, it produces a diff.
+Any added or removed rows are added to the table as a row.
+An additional string column with the name `diff` is created and contains a `-` if the
+row was present in the `got` table and not in the `want` table or `+` if the opposite is true.
+
+The diff function is guaranteed to emit at least one row if the tables are
+different and no rows if the tables are the same. _The exact diff produced may change._
+
+_The `testing.diff()` function can be used to perform in-line diffs in a query._
+
+## Parameters
+
+### got
+The stream containing data to test.
+_Defaults to piped-forward data (`<-`)._
+
+_**Data type:** Object_
+
+### want
+The stream that contains the expected data to test against.
+
+_**Data type:** Object_
+
+## Examples
+
+##### Diff separate streams
+```js
+import "testing"
+
+want = from(bucket: "backup-telegraf/autogen")
+  |> range(start: -5m)
+got = from(bucket: "telegraf/autogen")
+  |> range(start: -5m)
+testing.diff(got: got, want: want)
+```
+
+##### Inline diff
+```js
+import "testing"
+
+want = from(bucket: "backup-telegraf/autogen") |> range(start: -5m)
+from(bucket: "telegraf/autogen")
+  |> range(start: -5m)
+  |> testing.diff(want: want)
+```

content/v2.0/reference/flux/functions/tests/_index.md

@@ -1,14 +0,0 @@
----
-title: Flux testing functions
-description: Flux testing functions test piped-forward data in specific ways and return errors if the tests fail.
-menu:
-  v2_0_ref:
-    name: Tests
-    parent: Flux functions
-weight: 205
----
-
-Flux testing functions test piped-forward data in specific ways and return errors if the tests fail.
-The following testing functions are available:
-
-{{< children type="functions" >}}

content/v2.0/reference/flux/functions/transformations/influxfieldsascols.md

@@ -1,40 +0,0 @@
----
-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
-menu:
-  v2_0_ref:
-    name: influxFieldsAsCols
-    parent: Transformations
-weight: 301
----
-
-The `influxFieldsAsCols()` function is a special application of the `pivot()` function that
-automatically aligns fields within each input table that have the same timestamp.
-
-_**Function type:** Transformation_
-
-```js
-influxFieldsAsCols()
-```
-
-## Examples
-```js
-from(bucket:"telegraf/autogen")
-  |> range(start: -1h)
-  |> filter(fn: (r) => r._measurement == "cpu")
-  |> influxFieldsAsCols()
-  |> keep(columns: ["_time", "cpu", "usage_idle", "usage_user"])
-```
-
-## Function definition
-```js
-influxFieldsAsCols = (tables=<-) =>
-  tables
-    |> pivot(
-      rowKey:["_time"],
-      columnKey: ["_field"],
-      valueColumn: "_value"
-    )
-```