isstr()
Returns true
if the expression is a string, and false
otherwise. If the expression is null
, it returns false
.
Syntax
isstr(EXPR)
Required Parameter
EXPR
- Expression that returns the value to be checked.
Usage
json "{}" | eval bool=isstr("string") => true
json "{}" | eval bool=isstr(0) => false
json "{}" | eval bool=isstr(null) => false