SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function format (children 1)
     ExpressionList (children 3)
      Literal \'Hello {0} World {0}\'
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal \'first\'
      Literal \'second\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_2