match()

Returns whether any part of the string matches the regular expression.

Syntax

match(VAL_EXPR, REGEX)
Required Parameters
VAL_EXPR
Expression to be evaluated. If the value is not a string, it converts the value to a string and then compares it with REGEX.
REGEX
Regular expression to compare to the VAL_EXPR value by enclosing it in a pair of double quotes (" "). If the expression is null, the function returns false.

Usage

json "{}" 
| eval match=match("8 miles", "\\d+ [a-z]+") => true

json "{}"
| eval match=match(" 8 miles ", "^\\d+ [a-z]+$") => false

json "{}"
| eval match=match("sample", "\\d+ [a-z]+") => false

json "{}"
| eval match=match(123, "\\d+") => true

json "{}"
| eval match=match(null, "\\d+") => false