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 (children 1)
       ExpressionList (children 3)
        Literal \'localhost\'
        Function currentDatabase (children 1)
         ExpressionList
        Identifier t0
  SelectQuery (children 3)
   ExpressionList (children 2)
    Literal UInt64_1
    Identifier c1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t0
   Set
