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Add Default Sorting to ALVgrid report


In order to display an ALV report with specific columns already sorted by default you will need to build a sort catalogue. This is fairly straight forward and is done in the following way:

Step 1. Add data declaration for sort catalogue
Step 2. Add code to build sort catalogue table
Step 3. Update 'REUSE_ALV_GRID_DISPLAY' FM call to include parameter 'it_sort' 


*  ALV data declarations
  data: it_sortcat   type slis_sortinfo_alv occurs 1,
        wa_sort like line of it_sortcat.



 perform build_sortcat.

*&----------------------------------------------------------*
*&      Form  build_sortcat
*&----------------------------------------------------------*
*       Build Sort catalog
*-----------------------------------------------------------*
FORM build_sortcat .
  wa_sort-spos      = 1.
  wa_sort-fieldname = 'EBELN'.
  wa_sort-SUBTOT    = 'X'. "subtotals any totals column by this field
*  gd_sortcat-tabname
  APPEND wa_sort TO it_sortcat.

  wa_sort-spos      = 2.
  wa_sort-fieldname = 'EBELP'.
*  gd_sortcat-tabname
  APPEND wa_sort TO it_sortcat.
ENDFORM.                    " build_sortcat



 call function 'REUSE_ALV_GRID_DISPLAY'
       exporting
            i_callback_program      = gd_repid
            i_callback_top_of_page   = 'TOP-OF-PAGE'
            is_layout               = gd_layout
            it_fieldcat             = fieldcatalog[]
            it_sort                 = it_sortcat
            i_save                  = 'X'
       tables
            t_outtab                = it_ekko
       exceptions
            program_error           = 1
            others                  = 2.

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