concat

Concatenates multiple strings into a single string. Expressions other than strings are first converted into strings and then concatenated.

Syntax

concat(EXPR, ...)
Required Parameters
EXPR, ...
Expressions that return strings, separated by commas (,). The function combines all strings returned by the expression into one string.

Usage

json "{}" 
| eval str=concat("hello", ", ", "world")
  => "hello, world"