ABAP Select data from SAP table /SAPPSSRM/S_SUBCON_COMP_DSP_WD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPPSSRM/S_SUBCON_COMP_DSP_WD
*  INTO TABLE @DATA(IT_/SAPPSSRM/S_SUBCON_COMP_DSP_WD2).
*--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_/SAPPSSRM/S_SUBCON_COMP_DSP_WD INDEX 1 INTO DATA(WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPPSSRM/S_SUBCON_COMP_DSP_WD>-CLIENT = 1.
</SAPPSSRM/S_SUBCON_COMP_DSP_WD>-GUID = 1.
</SAPPSSRM/S_SUBCON_COMP_DSP_WD>-P_GUID = 1.
</SAPPSSRM/S_SUBCON_COMP_DSP_WD>-DEL_IND = 1.
</SAPPSSRM/S_SUBCON_COMP_DSP_WD>-SEQUENCE_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-NUMBER_INT, sy-vline,
  WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-SERIAL_NO, sy-vline,
  WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-PRODUCT, sy-vline,
  WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-CATEGORY_ID, sy-vline,
  WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-PRICE, sy-vline,
  WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-PRICE_UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD 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_/SAPPSSRM/S_SUBCON_COMP_DSP_WD 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_/SAPPSSRM/S_SUBCON_COMP_DSP_WD INTO WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD.


*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 NUMCV, internal->external for field ITEM_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-ITEM_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-ITEM_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD-UNIT.
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_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR, 
CLIENT TYPE STRING,
GUID TYPE STRING,
P_GUID TYPE STRING,
DEL_IND TYPE STRING,
SEQUENCE_NO TYPE STRING,
NUMBER_INT TYPE STRING,
SERIAL_NO TYPE STRING,
PRODUCT TYPE STRING,
CATEGORY_ID TYPE STRING,
PRICE TYPE STRING,
PRICE_UNIT TYPE STRING,
ORDERED_PROD TYPE STRING,
PARENT_GUID TYPE STRING,
ITEM_CAT TYPE STRING,
ITEM_CAT_DESC TYPE STRING,
ITEM_NUMBER TYPE STRING,
MATERIAL TYPE STRING,
MATERIAL_DESC TYPE STRING,
PLANT TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
UNIT_OUTPUT TYPE STRING,
UNIT_SHORT_TEXT TYPE STRING,
FIXED_QUAN TYPE STRING,
REQ_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_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_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-CLIENT sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-GUID sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-P_GUID sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-DEL_IND sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-SEQUENCE_NO sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-NUMBER_INT sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-SERIAL_NO sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-PRODUCT sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-CATEGORY_ID sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-PRICE sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-PRICE_UNIT sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-ORDERED_PROD sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-PARENT_GUID sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-ITEM_CAT sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-ITEM_CAT_DESC sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-ITEM_NUMBER sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-MATERIAL sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-MATERIAL_DESC sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-PLANT sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-QUANTITY sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-UNIT sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-UNIT_OUTPUT sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-UNIT_SHORT_TEXT sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-FIXED_QUAN sy-vline 
WA_/SAPPSSRM/S_SUBCON_COMP_DSP_WD_STR-REQ_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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