Influxdata
/
docs-v2
mirror of https://github.com/influxdata/docs-v2.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
docs-v2/content/flux/v0/stdlib/universe/touint.md

7.6 KiB
Raw Permalink Blame History

title description menu weight flux/v0/tags introduced
toUInt() function `toUInt()` converts all values in the `_value` column to unsigned integer types.
flux_v0_ref
name parent identifier
toUInt universe universe/toUInt
101
transformations
type-conversions
0.7.0

toUInt() converts all values in the _value column to unsigned integer types.

Supported types and behaviors

toUInt() behavior depends on the _value column type:

_value type Returned value
string UInteger equivalent of the numeric string
bool 1 (true) or 0 (false)
duration Number of nanoseconds in the specified duration
time Equivalent nanosecond epoch timestamp
float Value truncated at the decimal
int UInteger equivalent of the integer
Function type signature
(<-tables: stream[{A with _value: B}]) => stream[{A with _value: B, _value: uint}]

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

tables

Input data. Default is piped-forward data (<-).

Examples

Convert a float _value column to uintegers

import "sampledata"

sampledata.float()
    |> toUInt()

{{< expand-wrapper >}} {{% expand "View example input and output" %}}

Input data

_time *tag _value
2021-01-01T00:00:00Z t1 -2.18
2021-01-01T00:00:10Z t1 10.92
2021-01-01T00:00:20Z t1 7.35
2021-01-01T00:00:30Z t1 17.53
2021-01-01T00:00:40Z t1 15.23
2021-01-01T00:00:50Z t1 4.43
_time *tag _value
2021-01-01T00:00:00Z t2 19.85
2021-01-01T00:00:10Z t2 4.97
2021-01-01T00:00:20Z t2 -3.75
2021-01-01T00:00:30Z t2 19.77
2021-01-01T00:00:40Z t2 13.86
2021-01-01T00:00:50Z t2 1.86

Output data

_time _value *tag
2021-01-01T00:00:00Z 18446744073709551614 t1
2021-01-01T00:00:10Z 10 t1
2021-01-01T00:00:20Z 7 t1
2021-01-01T00:00:30Z 17 t1
2021-01-01T00:00:40Z 15 t1
2021-01-01T00:00:50Z 4 t1
_time _value *tag
2021-01-01T00:00:00Z 19 t2
2021-01-01T00:00:10Z 4 t2
2021-01-01T00:00:20Z 18446744073709551613 t2
2021-01-01T00:00:30Z 19 t2
2021-01-01T00:00:40Z 13 t2
2021-01-01T00:00:50Z 1 t2

{{% /expand %}} {{< /expand-wrapper >}}

Convert a boolean _value column to uintegers

import "sampledata"

sampledata.bool()
    |> toUInt()

{{< expand-wrapper >}} {{% expand "View example input and output" %}}

Input data

_time *tag _value
2021-01-01T00:00:00Z t1 true
2021-01-01T00:00:10Z t1 true
2021-01-01T00:00:20Z t1 false
2021-01-01T00:00:30Z t1 true
2021-01-01T00:00:40Z t1 false
2021-01-01T00:00:50Z t1 false
_time *tag _value
2021-01-01T00:00:00Z t2 false
2021-01-01T00:00:10Z t2 true
2021-01-01T00:00:20Z t2 false
2021-01-01T00:00:30Z t2 true
2021-01-01T00:00:40Z t2 true
2021-01-01T00:00:50Z t2 false

Output data

_time _value *tag
2021-01-01T00:00:00Z 1 t1
2021-01-01T00:00:10Z 1 t1
2021-01-01T00:00:20Z 0 t1
2021-01-01T00:00:30Z 1 t1
2021-01-01T00:00:40Z 0 t1
2021-01-01T00:00:50Z 0 t1
_time _value *tag
2021-01-01T00:00:00Z 0 t2
2021-01-01T00:00:10Z 1 t2
2021-01-01T00:00:20Z 0 t2
2021-01-01T00:00:30Z 1 t2
2021-01-01T00:00:40Z 1 t2
2021-01-01T00:00:50Z 0 t2

{{% /expand %}} {{< /expand-wrapper >}}

Convert a uinteger _value column to an uintegers

import "sampledata"

sampledata.uint()
    |> toUInt()

{{< expand-wrapper >}} {{% expand "View example input and output" %}}

Input data

_time _value *tag
2021-01-01T00:00:00Z 18446744073709551614 t1
2021-01-01T00:00:10Z 10 t1
2021-01-01T00:00:20Z 7 t1
2021-01-01T00:00:30Z 17 t1
2021-01-01T00:00:40Z 15 t1
2021-01-01T00:00:50Z 4 t1
_time _value *tag
2021-01-01T00:00:00Z 19 t2
2021-01-01T00:00:10Z 4 t2
2021-01-01T00:00:20Z 18446744073709551613 t2
2021-01-01T00:00:30Z 19 t2
2021-01-01T00:00:40Z 13 t2
2021-01-01T00:00:50Z 1 t2

Output data

_time _value *tag
2021-01-01T00:00:00Z 18446744073709551614 t1
2021-01-01T00:00:10Z 10 t1
2021-01-01T00:00:20Z 7 t1
2021-01-01T00:00:30Z 17 t1
2021-01-01T00:00:40Z 15 t1
2021-01-01T00:00:50Z 4 t1
_time _value *tag
2021-01-01T00:00:00Z 19 t2
2021-01-01T00:00:10Z 4 t2
2021-01-01T00:00:20Z 18446744073709551613 t2
2021-01-01T00:00:30Z 19 t2
2021-01-01T00:00:40Z 13 t2
2021-01-01T00:00:50Z 1 t2

{{% /expand %}} {{< /expand-wrapper >}}