DataDog Log Search empty string facet

Question

On DataDog log search, I want to search for logs with empty string for a specific facet, e.g. logs with userId is empty. @userId:'' , @userId:"", -@userId:* non worked.

Answer 1

this seem to be working: -@userId:*?* do not forget the minus at the start.

Answer 2

This may have been patched. -@userId:* is working for me, now.