upper()
Converts a string to uppercases. If it receives a value other than the string, it evaluates the value after converting it to a string.
Syntax
upper(STR_EXPR)
Required Parameter
STR_EXPR
- Source string expression. If the expression is
null
, the function returnsnull
.
Usage
json "{}" | eval UPPER=upper("Hello World")
=> "HELLO WORLD"
json "{}" | eval UPPER=upper(1234)
=> "1234"
json "{}" | eval UPPER=upper(null)
=> null