ABAP Select data from SAP table IDFSALLWNCRTFEH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IDFSALLWNCRTFEH 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 IDFSALLWNCRTFEH. 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 IDFSALLWNCRTFEH 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_IDFSALLWNCRTFEH TYPE STANDARD TABLE OF IDFSALLWNCRTFEH,
      WA_IDFSALLWNCRTFEH TYPE IDFSALLWNCRTFEH,
      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: <IDFSALLWNCRTFEH> TYPE IDFSALLWNCRTFEH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDFSALLWNCRTFEH
*  INTO TABLE @DATA(IT_IDFSALLWNCRTFEH2).
*--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_IDFSALLWNCRTFEH INDEX 1 INTO DATA(WA_IDFSALLWNCRTFEH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDFSALLWNCRTFEH>-MANDT = 1.
<IDFSALLWNCRTFEH>-DFSALLWNCREQUUID = 1.
<IDFSALLWNCRTFEH>-FORCEELEMENTORGUUID = 1.
<IDFSALLWNCRTFEH>-FORCEELEMENTORGTARGETUUID = 1.
<IDFSALLWNCRTFEH>-FORCEELEMENTORGID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDFSALLWNCRTFEH-DFSFRCELMNTISCHANGEABLE, sy-vline,
  WA_IDFSALLWNCRTFEH-DFSALLWNCREQREQDQUANTITY, sy-vline,
  WA_IDFSALLWNCRTFEH-DFSALLWNCREQQUANTITYUNIT, sy-vline,
  WA_IDFSALLWNCRTFEH-DFSALLWNCREQREQDSUBQUANTITY, sy-vline,
  WA_IDFSALLWNCRTFEH-DFSALLWNCREQCHANGEDATETIME, sy-vline,
  WA_IDFSALLWNCRTFEH-FRCELMNTORGNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDFSALLWNCRTFEH 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_IDFSALLWNCRTFEH 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_IDFSALLWNCRTFEH INTO WA_IDFSALLWNCRTFEH.


*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 CUNIT, internal->external for field DFSALLWNCREQQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IDFSALLWNCRTFEH-DFSALLWNCREQQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDFSALLWNCRTFEH-DFSALLWNCREQQUANTITYUNIT.
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_IDFSALLWNCRTFEH_STR, 
MANDT TYPE STRING,
DFSALLWNCREQUUID TYPE STRING,
FORCEELEMENTORGUUID TYPE STRING,
FORCEELEMENTORGTARGETUUID TYPE STRING,
FORCEELEMENTORGID TYPE STRING,
DFSFRCELMNTISCHANGEABLE TYPE STRING,
DFSALLWNCREQREQDQUANTITY TYPE STRING,
DFSALLWNCREQQUANTITYUNIT TYPE STRING,
DFSALLWNCREQREQDSUBQUANTITY TYPE STRING,
DFSALLWNCREQCHANGEDATETIME TYPE STRING,
FRCELMNTORGNAME TYPE STRING,
FRCELMNTORGSHORTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDFSALLWNCRTFEH_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_IDFSALLWNCRTFEH_STR-MANDT sy-vline 
WA_IDFSALLWNCRTFEH_STR-DFSALLWNCREQUUID sy-vline 
WA_IDFSALLWNCRTFEH_STR-FORCEELEMENTORGUUID sy-vline 
WA_IDFSALLWNCRTFEH_STR-FORCEELEMENTORGTARGETUUID sy-vline 
WA_IDFSALLWNCRTFEH_STR-FORCEELEMENTORGID sy-vline 
WA_IDFSALLWNCRTFEH_STR-DFSFRCELMNTISCHANGEABLE sy-vline 
WA_IDFSALLWNCRTFEH_STR-DFSALLWNCREQREQDQUANTITY sy-vline 
WA_IDFSALLWNCRTFEH_STR-DFSALLWNCREQQUANTITYUNIT sy-vline 
WA_IDFSALLWNCRTFEH_STR-DFSALLWNCREQREQDSUBQUANTITY sy-vline 
WA_IDFSALLWNCRTFEH_STR-DFSALLWNCREQCHANGEDATETIME sy-vline 
WA_IDFSALLWNCRTFEH_STR-FRCELMNTORGNAME sy-vline 
WA_IDFSALLWNCRTFEH_STR-FRCELMNTORGSHORTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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