SAP ALV

 https://www.youtube.com/watch?v=OnU-VYTS1Ys

*&---------------------------------------------------------------------*
*& Report ZZSAP_ALV
*&---------------------------------------------------------------------*
*&
*&---------------------------------------------------------------------*
REPORT zzsap_alv.

DATA: it_mara       TYPE TABLE OF sflights,
      it_alv_design TYPE slis_t_fieldcat_alv.

DATA: wa_alv_design TYPE slis_fieldcat_alv.

SELECT * FROM sflights INTO TABLE it_mara.


wa_alv_design-fieldname = 'CARRNAME'.
wa_alv_design-tabname = 'IT_MARA'.
wa_alv_design-outputlen = '20'.
wa_alv_design-seltext_m = 'CAR NAME'.

APPEND wa_alv_design TO it_alv_design.
CLEAR wa_alv_design.

wa_alv_design-fieldname = 'CITYFROM'.
wa_alv_design-tabname = 'IT_MARA'.
wa_alv_design-outputlen = '35'.
wa_alv_design-seltext_m = 'CITY FROM'.

APPEND wa_alv_design TO it_alv_design.
CLEAR wa_alv_design.



CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
  EXPORTING
    I_STRUCTURE_NAME                  = 'sflights'
    it_fieldcat   = it_alv_design
  TABLES
    t_outtab      = it_mara
  EXCEPTIONS
    program_error = 1
    OTHERS        = 2.


IF sy-subrc <> 0.
* Implement suitable error handling here
ENDIF.