ABAP Select data from SAP table WDFR_BEST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WDFR_BEST
*  INTO TABLE @DATA(IT_WDFR_BEST2).
*--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_WDFR_BEST INDEX 1 INTO DATA(WA_WDFR_BEST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WDFR_BEST>-KTMNG = 1.
<WDFR_BEST>-MENGE = 1.
<WDFR_BEST>-PLANM = 1.
<WDFR_BEST>-MEINS = 1.
<WDFR_BEST>-BPRME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WDFR_BEST-BPUMZ, sy-vline,
  WA_WDFR_BEST-BPUMN, sy-vline,
  WA_WDFR_BEST-UMREZ, sy-vline,
  WA_WDFR_BEST-UMREN, sy-vline,
  WA_WDFR_BEST-NETPR, sy-vline,
  WA_WDFR_BEST-PEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WDFR_BEST 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_WDFR_BEST 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_WDFR_BEST INTO WA_WDFR_BEST.


*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 MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WDFR_BEST-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WDFR_BEST-MEINS.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field INFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WDFR_BEST-INFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WDFR_BEST-INFNR.
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_WDFR_BEST_STR, 
KTMNG TYPE STRING,
MENGE TYPE STRING,
PLANM TYPE STRING,
MEINS TYPE STRING,
BPRME TYPE STRING,
BPUMZ TYPE STRING,
BPUMN TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
NETPR TYPE STRING,
PEINH TYPE STRING,
NETWR TYPE STRING,
BRTWR TYPE STRING,
WAERS TYPE STRING,
BMENGE TYPE STRING,
BMEINS TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LOEKZ TYPE STRING,
STATU TYPE STRING,
AEDAT TYPE STRING,
LGORT TYPE STRING,
BEDNR TYPE STRING,
MATKL TYPE STRING,
INFNR TYPE STRING,
IDNLF TYPE STRING,
AGDAT TYPE STRING,
WEBAZ TYPE STRING,
MWSKZ TYPE STRING,
BONUS TYPE STRING,
INSMK TYPE STRING,
SPINF TYPE STRING,
PRSDR TYPE STRING,
SCHPR TYPE STRING,
MAHNZ TYPE STRING,
MAHN1 TYPE STRING,
MAHN2 TYPE STRING,
MAHN3 TYPE STRING,
UEBTO TYPE STRING,
UEBTK TYPE STRING,
UNTTO TYPE STRING,
BWTAR TYPE STRING,
BWTTY TYPE STRING,
ABSKZ TYPE STRING,
AGMEM TYPE STRING,
ELIKZ TYPE STRING,
EREKZ TYPE STRING,
BSART TYPE STRING,
PSTYP TYPE STRING,
KNTTP TYPE STRING,
KTMNG_ABG TYPE STRING,
BKTMNG_ABG TYPE STRING,
RANG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WDFR_BEST_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_WDFR_BEST_STR-KTMNG sy-vline 
WA_WDFR_BEST_STR-MENGE sy-vline 
WA_WDFR_BEST_STR-PLANM sy-vline 
WA_WDFR_BEST_STR-MEINS sy-vline 
WA_WDFR_BEST_STR-BPRME sy-vline 
WA_WDFR_BEST_STR-BPUMZ sy-vline 
WA_WDFR_BEST_STR-BPUMN sy-vline 
WA_WDFR_BEST_STR-UMREZ sy-vline 
WA_WDFR_BEST_STR-UMREN sy-vline 
WA_WDFR_BEST_STR-NETPR sy-vline 
WA_WDFR_BEST_STR-PEINH sy-vline 
WA_WDFR_BEST_STR-NETWR sy-vline 
WA_WDFR_BEST_STR-BRTWR sy-vline 
WA_WDFR_BEST_STR-WAERS sy-vline 
WA_WDFR_BEST_STR-BMENGE sy-vline 
WA_WDFR_BEST_STR-BMEINS sy-vline 
WA_WDFR_BEST_STR-EBELN sy-vline 
WA_WDFR_BEST_STR-EBELP sy-vline 
WA_WDFR_BEST_STR-LOEKZ sy-vline 
WA_WDFR_BEST_STR-STATU sy-vline 
WA_WDFR_BEST_STR-AEDAT sy-vline 
WA_WDFR_BEST_STR-LGORT sy-vline 
WA_WDFR_BEST_STR-BEDNR sy-vline 
WA_WDFR_BEST_STR-MATKL sy-vline 
WA_WDFR_BEST_STR-INFNR sy-vline 
WA_WDFR_BEST_STR-IDNLF sy-vline 
WA_WDFR_BEST_STR-AGDAT sy-vline 
WA_WDFR_BEST_STR-WEBAZ sy-vline 
WA_WDFR_BEST_STR-MWSKZ sy-vline 
WA_WDFR_BEST_STR-BONUS sy-vline 
WA_WDFR_BEST_STR-INSMK sy-vline 
WA_WDFR_BEST_STR-SPINF sy-vline 
WA_WDFR_BEST_STR-PRSDR sy-vline 
WA_WDFR_BEST_STR-SCHPR sy-vline 
WA_WDFR_BEST_STR-MAHNZ sy-vline 
WA_WDFR_BEST_STR-MAHN1 sy-vline 
WA_WDFR_BEST_STR-MAHN2 sy-vline 
WA_WDFR_BEST_STR-MAHN3 sy-vline 
WA_WDFR_BEST_STR-UEBTO sy-vline 
WA_WDFR_BEST_STR-UEBTK sy-vline 
WA_WDFR_BEST_STR-UNTTO sy-vline 
WA_WDFR_BEST_STR-BWTAR sy-vline 
WA_WDFR_BEST_STR-BWTTY sy-vline 
WA_WDFR_BEST_STR-ABSKZ sy-vline 
WA_WDFR_BEST_STR-AGMEM sy-vline 
WA_WDFR_BEST_STR-ELIKZ sy-vline 
WA_WDFR_BEST_STR-EREKZ sy-vline 
WA_WDFR_BEST_STR-BSART sy-vline 
WA_WDFR_BEST_STR-PSTYP sy-vline 
WA_WDFR_BEST_STR-KNTTP sy-vline 
WA_WDFR_BEST_STR-KTMNG_ABG sy-vline 
WA_WDFR_BEST_STR-BKTMNG_ABG sy-vline 
WA_WDFR_BEST_STR-RANG sy-vline      INTO ld_text SEPARATED BY SPACE.

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