docs-v2/content/flux/v0.x/stdlib/strings/toupper.md

title	description	aliases	menu	weight	related	introduced
strings.toUpper() function	The strings.toUpper() function converts a string to uppercase.	/influxdb/v2.0/reference/flux/functions/strings/toupper/ /influxdb/v2.0/reference/flux/stdlib/strings/toupper/ /influxdb/cloud/reference/flux/stdlib/strings/toupper/	flux_0_x_ref name parent strings.toUpper strings	301	/flux/v0.x/stdlib/strings/totitle /flux/v0.x/stdlib/strings/tolower /flux/v0.x/stdlib/strings/title	0.18.0

The strings.toUpper() function converts a string to uppercase.

Output data type: String

import "strings"

strings.toUpper(v: "koala")

// returns "KOALA"

Parameters

v

The string value to convert.

Examples

Convert all values of a column to upper case

import "strings"

data
    |> map(fn: (r) => ({ r with envVars: strings.toUpper(v: r.envVars) }))

{{% note %}}

The difference between toTitle and toUpper

The results of toUpper() and toTitle are often the same, however the difference is visible when using special characters:

str = "dz"

strings.toUpper(v: str) // Returns DZ
strings.toTitle(v: str) // Returns Dz

{{% /note %}}