SelectWithUnionQuery (children 1)
 ExpressionList (children 2)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Literal UInt64_1 (alias x)
    Identifier x (alias y)
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function remote (alias tx) (children 1)
       ExpressionList (children 3)
        Literal \'localhost\'
        Function currentDatabase (children 1)
         ExpressionList
        Identifier t0
  SelectQuery (children 2)
   ExpressionList (children 2)
    Literal UInt64_1
    Identifier c0
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t0
