isempty()

Applies to: ✅ Microsoft Fabric ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel

Returns true if the argument is an empty string or is null.

Syntax

isempty(value)

Learn more about syntax conventions.

Parameters

Name	Type	Required	Description
value	string	✔️	The value to check if empty or null.

Returns

A boolean value indicating whether value is an empty string or is null.

Example

x	isempty(x)
""	true
"x"	false
parsejson("")	true
parsejson("[]")	false
parsejson("{}")	false