SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier Alpha
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier Beta
     TableJoin (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier Alpha.foo
        Identifier Beta.foo
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier foo
