views webform submission username I would like to have webform submission username using views.
Add fields > webform submissions: user
The result is uid (user id number)

How can I have username login name instead of uid ?
'Username' as a field is not available to webform as it is not stored in the webform submission.

You need to add a Relationship to the User using the UID and then the User Name will be available to you in the fields section.

See more about relationships in this video