SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 4)
    Identifier u.uid
    Identifier u.name
    Identifier u.gid
    Identifier u.gname
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier users (alias u)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier groups (alias g)
     TableJoin (children 1)
      ExpressionList (children 2)
       Identifier gid
       Identifier gname
 Identifier PrettyCompactMonoBlock
