ABAP Select data from SAP table WRS_ARTICLE_FEEDER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRS_ARTICLE_FEEDER
*  INTO TABLE @DATA(IT_WRS_ARTICLE_FEEDER2).
*--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_WRS_ARTICLE_FEEDER INDEX 1 INTO DATA(WA_WRS_ARTICLE_FEEDER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRS_ARTICLE_FEEDER>-MATNR = 1.
<WRS_ARTICLE_FEEDER>-MAKTX = 1.
<WRS_ARTICLE_FEEDER>-LABST = 1.
<WRS_ARTICLE_FEEDER>-MEINS = 1.
<WRS_ARTICLE_FEEDER>-MTART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRS_ARTICLE_FEEDER-MATKL, sy-vline,
  WA_WRS_ARTICLE_FEEDER-ATTYP, sy-vline,
  WA_WRS_ARTICLE_FEEDER-EAN11, sy-vline,
  WA_WRS_ARTICLE_FEEDER-MSTAE, sy-vline,
  WA_WRS_ARTICLE_FEEDER-MSTDE, sy-vline,
  WA_WRS_ARTICLE_FEEDER-COLOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRS_ARTICLE_FEEDER 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_WRS_ARTICLE_FEEDER 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_WRS_ARTICLE_FEEDER INTO WA_WRS_ARTICLE_FEEDER.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRS_ARTICLE_FEEDER-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRS_ARTICLE_FEEDER-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WRS_ARTICLE_FEEDER-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRS_ARTICLE_FEEDER-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_WRS_ARTICLE_FEEDER-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRS_ARTICLE_FEEDER-EAN11.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field SAISJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WRS_ARTICLE_FEEDER-SAISJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRS_ARTICLE_FEEDER-SAISJ.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field BPRME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WRS_ARTICLE_FEEDER-BPRME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRS_ARTICLE_FEEDER-BPRME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FILIA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRS_ARTICLE_FEEDER-FILIA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRS_ARTICLE_FEEDER-FILIA.
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_WRS_ARTICLE_FEEDER_STR, 
MATNR TYPE STRING,
MAKTX TYPE STRING,
LABST TYPE STRING,
MEINS TYPE STRING,
MTART TYPE STRING,
MATKL TYPE STRING,
ATTYP TYPE STRING,
EAN11 TYPE STRING,
MSTAE TYPE STRING,
MSTDE TYPE STRING,
COLOR TYPE STRING,
SIZE1 TYPE STRING,
SAISO TYPE STRING,
SAISJ TYPE STRING,
SAITY TYPE STRING,
BRAND_ID TYPE STRING,
WERKS TYPE STRING,
LIFNR TYPE STRING,
IDNLF TYPE STRING,
RELIF TYPE STRING,
INFNR TYPE STRING,
LIFAB TYPE STRING,
LIFBI TYPE STRING,
NETPR TYPE STRING,
WAERS TYPE STRING,
EKORG TYPE STRING,
BPRME TYPE STRING,
EXTWG TYPE STRING,
MINBM TYPE STRING,
APLFZ TYPE STRING,
VLFKZ TYPE STRING,
FILIA TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
MMSTA TYPE STRING,
MMSTD TYPE STRING,
DISMM TYPE STRING,
PLIFZ TYPE STRING,
ENDPA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRS_ARTICLE_FEEDER_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_WRS_ARTICLE_FEEDER_STR-MATNR sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-MAKTX sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-LABST sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-MEINS sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-MTART sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-MATKL sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-ATTYP sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-EAN11 sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-MSTAE sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-MSTDE sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-COLOR sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-SIZE1 sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-SAISO sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-SAISJ sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-SAITY sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-BRAND_ID sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-WERKS sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-LIFNR sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-IDNLF sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-RELIF sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-INFNR sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-LIFAB sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-LIFBI sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-NETPR sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-WAERS sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-EKORG sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-BPRME sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-EXTWG sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-MINBM sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-APLFZ sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-VLFKZ sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-FILIA sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-DATAB sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-DATBI sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-MMSTA sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-MMSTD sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-DISMM sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-PLIFZ sy-vline 
WA_WRS_ARTICLE_FEEDER_STR-ENDPA sy-vline      INTO ld_text SEPARATED BY SPACE.

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