I have a string variable of an SOQL query where I have a relationship query name but the output returns only the relationship Id. Below is the query and the output in detail.

String s = 'select XYZ__r.Name from contact where Id = \'0031D00000KkQLKQA3\'';
system.debug(Database.query(s));

Output : (Contact:{XYZ__c=a0w1D000000RezuQAC, Id=0031D00000KkQLKQA3})

How do I get the XYZ__r.Name in the output. 

Is there a way to stop the drop down that give and option to wrap or clip text in a lightning data table?