SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Identifier num_columns
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function s3 (children 1)
       ExpressionList (children 3)
        Identifier s3_conn
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier filename
          Literal \'t_03363_function_write_down_partition_columns/**.parquet\'
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier format
          Identifier ParquetMetadata
   Literal UInt64_1
