ABAP Select data from SAP table SPCM_DISP_MENU into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SPCM_DISP_MENU table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to SPCM_DISP_MENU. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the SPCM_DISP_MENU table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_SPCM_DISP_MENU TYPE STANDARD TABLE OF SPCM_DISP_MENU,
      WA_SPCM_DISP_MENU TYPE SPCM_DISP_MENU,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <SPCM_DISP_MENU> TYPE SPCM_DISP_MENU.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SPCM_DISP_MENU.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SPCM_DISP_MENU
  INTO TABLE IT_SPCM_DISP_MENU.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SPCM_DISP_MENU
*  INTO TABLE @DATA(IT_SPCM_DISP_MENU2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_SPCM_DISP_MENU INDEX 1 INTO DATA(WA_SPCM_DISP_MENU2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SPCM_DISP_MENU ASSIGNING <SPCM_DISP_MENU>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SPCM_DISP_MENU>-MANDT = 1.
<SPCM_DISP_MENU>-MESTYP = 1.
<SPCM_DISP_MENU>-MESFCT = 1.
<SPCM_DISP_MENU>-MESCOD = 1.
<SPCM_DISP_MENU>-STATUS = 1.

ENDLOOP.

LOOP AT IT_SPCM_DISP_MENU INTO WA_SPCM_DISP_MENU.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SPCM_DISP_MENU-DIRECT, sy-vline,
  WA_SPCM_DISP_MENU-FCODE, sy-vline,
  WA_SPCM_DISP_MENU-TEXT, sy-vline,
  WA_SPCM_DISP_MENU-DISABLED, sy-vline,
  WA_SPCM_DISP_MENU-HIDDEN, sy-vline,
  WA_SPCM_DISP_MENU-SBRTN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SPCM_DISP_MENU you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_SPCM_DISP_MENU TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_SPCM_DISP_MENU INTO WA_SPCM_DISP_MENU.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SPCM_DISP_MENU_STR, 
MANDT TYPE STRING,
MESTYP TYPE STRING,
MESFCT TYPE STRING,
MESCOD TYPE STRING,
STATUS TYPE STRING,
DIRECT TYPE STRING,
FCODE TYPE STRING,
TEXT TYPE STRING,
DISABLED TYPE STRING,
HIDDEN TYPE STRING,
SBRTN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SPCM_DISP_MENU_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_SPCM_DISP_MENU_STR-MANDT sy-vline 
WA_SPCM_DISP_MENU_STR-MESTYP sy-vline 
WA_SPCM_DISP_MENU_STR-MESFCT sy-vline 
WA_SPCM_DISP_MENU_STR-MESCOD sy-vline 
WA_SPCM_DISP_MENU_STR-STATUS sy-vline 
WA_SPCM_DISP_MENU_STR-DIRECT sy-vline 
WA_SPCM_DISP_MENU_STR-FCODE sy-vline 
WA_SPCM_DISP_MENU_STR-TEXT sy-vline 
WA_SPCM_DISP_MENU_STR-DISABLED sy-vline 
WA_SPCM_DISP_MENU_STR-HIDDEN sy-vline 
WA_SPCM_DISP_MENU_STR-SBRTN sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.