SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function file (children 1)
       ExpressionList (children 3)
        Function concat (children 1)
         ExpressionList (children 2)
          Function currentDatabase (children 1)
           ExpressionList
          Literal \'_data_02302.arrow\'
        Identifier auto
        Literal \'x UInt8, xx UInt8 default 10, y default 42, z default x + xx + y\'
   Set
