isnotnull()

Returns true if the argument isn't null.

Deprecated aliases: notnull()

Syntax

isnotnull(value)

Name	Type	Required	Description
value	scalar	✓	The value to check if not null.

true if value is not null and false otherwise.

Find the storm events for which there's a begin location.

StormEvents
| where isnotnull(BeginLat) and isnotnull(BeginLon)