SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   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 \'.03004_data.bsonEachRow\'
        Identifier auto
        Literal \'null UInt32, foo Nullable(UInt32)\'
