ABAP Select data from SAP table /DSD/SL_GUI_RACVHD_S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /DSD/SL_GUI_RACVHD_S 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 /DSD/SL_GUI_RACVHD_S. 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 /DSD/SL_GUI_RACVHD_S 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_/DSD/SL_GUI_RACVHD_S TYPE STANDARD TABLE OF /DSD/SL_GUI_RACVHD_S,
      WA_/DSD/SL_GUI_RACVHD_S TYPE /DSD/SL_GUI_RACVHD_S,
      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: </DSD/SL_GUI_RACVHD_S> TYPE /DSD/SL_GUI_RACVHD_S.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /DSD/SL_GUI_RACVHD_S
  INTO TABLE IT_/DSD/SL_GUI_RACVHD_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /DSD/SL_GUI_RACVHD_S
*  INTO TABLE @DATA(IT_/DSD/SL_GUI_RACVHD_S2).
*--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_/DSD/SL_GUI_RACVHD_S INDEX 1 INTO DATA(WA_/DSD/SL_GUI_RACVHD_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/DSD/SL_GUI_RACVHD_S ASSIGNING </DSD/SL_GUI_RACVHD_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</DSD/SL_GUI_RACVHD_S>-CLIENT = 1.
</DSD/SL_GUI_RACVHD_S>-TOUR_ID = 1.
</DSD/SL_GUI_RACVHD_S>-VISIT_ID = 1.
</DSD/SL_GUI_RACVHD_S>-CUSTNR = 1.
</DSD/SL_GUI_RACVHD_S>-CPD = 1.

ENDLOOP.

LOOP AT IT_/DSD/SL_GUI_RACVHD_S INTO WA_/DSD/SL_GUI_RACVHD_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/DSD/SL_GUI_RACVHD_S-VKORG, sy-vline,
  WA_/DSD/SL_GUI_RACVHD_S-VTWEG, sy-vline,
  WA_/DSD/SL_GUI_RACVHD_S-SPART, sy-vline,
  WA_/DSD/SL_GUI_RACVHD_S-VISCOD, sy-vline,
  WA_/DSD/SL_GUI_RACVHD_S-CLEARSTAT, sy-vline,
  WA_/DSD/SL_GUI_RACVHD_S-USERSTAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/DSD/SL_GUI_RACVHD_S 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_/DSD/SL_GUI_RACVHD_S 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_/DSD/SL_GUI_RACVHD_S INTO WA_/DSD/SL_GUI_RACVHD_S.


*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.

*Conversion exit ALPHA, internal->external for field CUSTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/SL_GUI_RACVHD_S-CUSTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/SL_GUI_RACVHD_S-CUSTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHIP_TO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/SL_GUI_RACVHD_S-SHIP_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/SL_GUI_RACVHD_S-SHIP_TO.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_/DSD/SL_GUI_RACVHD_S_STR, 
CLIENT TYPE STRING,
TOUR_ID TYPE STRING,
VISIT_ID TYPE STRING,
CUSTNR TYPE STRING,
CPD TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VISCOD TYPE STRING,
CLEARSTAT TYPE STRING,
USERSTAT TYPE STRING,
CNGDATE TYPE STRING,
CNGTIME TYPE STRING,
CNGUSER TYPE STRING,
STATUS TYPE STRING,
NOK TYPE STRING,
MAN_PROC TYPE STRING,
QUICKEXCHANGE TYPE STRING,
SHIP_TO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/DSD/SL_GUI_RACVHD_S_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_/DSD/SL_GUI_RACVHD_S_STR-CLIENT sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-TOUR_ID sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-VISIT_ID sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-CUSTNR sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-CPD sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-VKORG sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-VTWEG sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-SPART sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-VISCOD sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-CLEARSTAT sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-USERSTAT sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-CNGDATE sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-CNGTIME sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-CNGUSER sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-STATUS sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-NOK sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-MAN_PROC sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-QUICKEXCHANGE sy-vline 
WA_/DSD/SL_GUI_RACVHD_S_STR-SHIP_TO sy-vline      INTO ld_text SEPARATED BY SPACE.

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