How to get the properties of two or more vertices in one Gremlin query?

Question

How to get the properties (ids) of two vertices in one Gremlin query?

g.addV('user').property(T.id, 'US001').property('name', 'Thirumal')
g.addV('role').property(T.id, 'EMP001').property('role_name', 'Developer')
g.V('US001').addE('employee').to(g.V('EMP001')).property('from', '2021/04/01')

How to get the following fields in one query like SQL joins?

 1. id of the user node
 2. name 
 3. id of employee node
 4. role_name 
 5. from - Employee edge

Answer 1

I suppose that if you wanted it all flattened in a "row" like the result of a SQL query you might do:

gremlin> g.V('US001').as('uid','name').outE().as('from').inV().as('eid','role').
......1>   select('uid','name','from','eid','role').
......2>     by(id).
......3>     by('name').
......4>     by('from').
......5>     by(id).
......6>     by('role_name')
==>[uid:US001,name:Thirumal,from:2021/04/01,eid:EMP001,role:Developer]