AlterQuery  table_2009_part (children 2)
 ExpressionList (children 1)
  AlterCommand ATTACH_PARTITION (children 1)
   Partition (children 1)
    Function tuple (children 1)
     ExpressionList (children 1)
      Function toYYYYMM (children 1)
       ExpressionList (children 1)
        Function toDate (children 1)
         ExpressionList (children 2)
          Function array (children 1)
           ExpressionList (children 1)
            Function arrayJoin (children 1)
             ExpressionList (children 1)
              Function array (children 1)
               ExpressionList (children 2)
                Function arrayJoin (children 1)
                 ExpressionList (children 1)
                  Function array (children 1)
                   ExpressionList (children 1)
                    Function arrayJoin (children 1)
                     ExpressionList (children 1)
                      Function array (children 1)
                       ExpressionList (children 1)
                        Function arrayJoin (children 1)
                         ExpressionList (children 1)
                          Function array (children 1)
                           ExpressionList (children 4)
                            Literal UInt64_3
                            Function materialize (children 1)
                             ExpressionList (children 1)
                              Literal NULL
                            Function arrayJoin (children 1)
                             ExpressionList (children 1)
                              Function array (children 1)
                               ExpressionList (children 3)
                                Literal UInt64_1025
                                Function materialize (children 1)
                                 ExpressionList (children 1)
                                  Literal NULL
                                Function materialize (children 1)
                                 ExpressionList (children 1)
                                  Literal NULL
                            Literal NULL
                Function materialize (children 1)
                 ExpressionList (children 1)
                  Literal NULL
          Literal NULL
 Identifier table_2009_part