InfluxDB Docs

strings.isUpper() function

The strings.isUpper() function tests if a single character string is uppercase.

Output data type: Boolean

import "strings"

strings.isUpper(v: "A")

// returns true

Parameters

v

The single-character string value to test.

Data type: String

Examples

Filter by columns with single-letter uppercase values
import "strings"

data
  |> filter(fn: (r) => strings.isUpper(v: r.host))