1、使用cl_alv_table_create=>create_dynamic_table
REPORT zmaschl_create_data_dynamic .
TYPE-POOLS: slis.
DATA: it_fcat TYPE slis_t_fieldcat_alv,
      is_fcat LIKE LINE OF it_fcat.
DATA: it_fieldcat TYPE lvc_t_fcat,
      is_fieldcat LIKE LINE OF it_fieldcat.
DATA: new_table TYPE REF TO data.
DATA: new_line  TYPE REF TO data.
FIELD-SYMBOLS: <l_table> TYPE ANY TABLE,
               <l_line>  TYPE ANY,
               <l_field> TYPE ANY.
* Build fieldcat
CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'
       EXPORTING
           i_structure_name = 'SYST'
       CHANGING
           ct_fieldcat      = it_fcat[].
   LOOP AT it_fcat INTO is_fcat WHERE NOT reptext_ddic IS initial.
        MOVE-CORRESPONDING is_fcat TO is_fieldcat.
        is_fieldcat-fieldname = is_fcat-fieldname.
        is_fieldcat-ref_field = is_fcat-fieldname.
        is_fieldcat-ref_table = is_fcat-ref_tabname.
        APPEND is_fieldcat TO it_fieldcat.
   ENDLOOP.
* Create a new Table
CALL METHOD cl_alv_table_create=>create_dynamic_table
       EXPORTING
        it_fieldcatalog = it_fieldcat
       IMPORTING
        ep_table        = new_table.
* Create a new Line with the same structure of the table.
ASSIGN new_table->* TO <l_table>.
CREATE DATA new_line LIKE LINE OF <l_table>.
ASSIGN new_line->* TO <l_line>.
* Test it...
   DO 30 TIMES.
      ASSIGN COMPONENT 'SUBRC' OF STRUCTURE <l_line> TO <l_field>.
      <l_field> = sy-index.
      INSERT <l_line> INTO TABLE <l_table>.
   ENDDO.
   LOOP AT <l_table> ASSIGNING <l_line>.
      ASSIGN COMPONENT 'SUBRC' OF STRUCTURE <l_line> TO <l_field>.
      WRITE <l_field>.
   ENDLOOP. 
2、使用动态创建临时程序  generate subroutine pool code name prog
                           message msg
                           line    lin
                           word    wrd
                           offset  off.并调。