ABAP Select data from SAP table /SCWM/S_HU_WHR_DEFLT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_HU_WHR_DEFLT
*  INTO TABLE @DATA(IT_/SCWM/S_HU_WHR_DEFLT2).
*--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_/SCWM/S_HU_WHR_DEFLT INDEX 1 INTO DATA(WA_/SCWM/S_HU_WHR_DEFLT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_HU_WHR_DEFLT>-RDOCID = 1.
</SCWM/S_HU_WHR_DEFLT>-RITMID = 1.
</SCWM/S_HU_WHR_DEFLT>-DOCNO = 1.
</SCWM/S_HU_WHR_DEFLT>-ITEMNO = 1.
</SCWM/S_HU_WHR_DEFLT>-PROCTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_HU_WHR_DEFLT-RDOCCAT, sy-vline,
  WA_/SCWM/S_HU_WHR_DEFLT-DOCTYPE, sy-vline,
  WA_/SCWM/S_HU_WHR_DEFLT-VLTYP, sy-vline,
  WA_/SCWM/S_HU_WHR_DEFLT-VLBER, sy-vline,
  WA_/SCWM/S_HU_WHR_DEFLT-VLPLA, sy-vline,
  WA_/SCWM/S_HU_WHR_DEFLT-STU_NUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_HU_WHR_DEFLT 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_/SCWM/S_HU_WHR_DEFLT 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_/SCWM/S_HU_WHR_DEFLT INTO WA_/SCWM/S_HU_WHR_DEFLT.


*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 ITEMNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_HU_WHR_DEFLT-ITEMNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_HU_WHR_DEFLT-ITEMNO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field ENTITLED
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_HU_WHR_DEFLT-ENTITLED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_HU_WHR_DEFLT-ENTITLED.
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_/SCWM/S_HU_WHR_DEFLT_STR, 
RDOCID TYPE STRING,
RITMID TYPE STRING,
DOCNO TYPE STRING,
ITEMNO TYPE STRING,
PROCTY TYPE STRING,
RDOCCAT TYPE STRING,
DOCTYPE TYPE STRING,
VLTYP TYPE STRING,
VLBER TYPE STRING,
VLPLA TYPE STRING,
STU_NUM TYPE STRING,
DOOR TYPE STRING,
NLTYP TYPE STRING,
NLBER TYPE STRING,
NLPLA TYPE STRING,
NPTYP TYPE STRING,
ENTITLED TYPE STRING,
ENTITLED_ROLE TYPE STRING,
PARTYLOC TYPE STRING,
DSTGRP TYPE STRING,
ROUTE TYPE STRING,
VAS TYPE STRING,
GI_TST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_HU_WHR_DEFLT_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_/SCWM/S_HU_WHR_DEFLT_STR-RDOCID sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-RITMID sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-DOCNO sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-ITEMNO sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-PROCTY sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-RDOCCAT sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-DOCTYPE sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-VLTYP sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-VLBER sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-VLPLA sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-STU_NUM sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-DOOR sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-NLTYP sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-NLBER sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-NLPLA sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-NPTYP sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-ENTITLED sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-ENTITLED_ROLE sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-PARTYLOC sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-DSTGRP sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-ROUTE sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-VAS sy-vline 
WA_/SCWM/S_HU_WHR_DEFLT_STR-GI_TST sy-vline      INTO ld_text SEPARATED BY SPACE.

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