ABAP Select data from SAP table VBKREDET into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VBKREDET 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 VBKREDET. 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 VBKREDET 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_VBKREDET TYPE STANDARD TABLE OF VBKREDET,
      WA_VBKREDET TYPE VBKREDET,
      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: <VBKREDET> TYPE VBKREDET.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VBKREDET
*  INTO TABLE @DATA(IT_VBKREDET2).
*--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_VBKREDET INDEX 1 INTO DATA(WA_VBKREDET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VBKREDET>-MANDT = 1.
<VBKREDET>-VBELN = 1.
<VBKREDET>-POSNR = 1.
<VBKREDET>-ETENR = 1.
<VBKREDET>-VRKME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VBKREDET-CMWAE, sy-vline,
  WA_VBKREDET-MATNR, sy-vline,
  WA_VBKREDET-CMPRE, sy-vline,
  WA_VBKREDET-MBDAT, sy-vline,
  WA_VBKREDET-OLFMNG, sy-vline,
  WA_VBKREDET-KWKKB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VBKREDET 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_VBKREDET 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_VBKREDET INTO WA_VBKREDET.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VBKREDET-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKREDET-VBELN.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LCNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VBKREDET-LCNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKREDET-LCNUM.
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_VBKREDET_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
ETENR TYPE STRING,
VRKME TYPE STRING,
CMWAE TYPE STRING,
MATNR TYPE STRING,
CMPRE TYPE STRING,
MBDAT TYPE STRING,
OLFMNG TYPE STRING,
KWKKB TYPE STRING,
KWKKC TYPE STRING,
KWKKD TYPE STRING,
KWKKE TYPE STRING,
KWKKF TYPE STRING,
KWKKG TYPE STRING,
LCNUM TYPE STRING,
DUMMY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VBKREDET_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_VBKREDET_STR-MANDT sy-vline 
WA_VBKREDET_STR-VBELN sy-vline 
WA_VBKREDET_STR-POSNR sy-vline 
WA_VBKREDET_STR-ETENR sy-vline 
WA_VBKREDET_STR-VRKME sy-vline 
WA_VBKREDET_STR-CMWAE sy-vline 
WA_VBKREDET_STR-MATNR sy-vline 
WA_VBKREDET_STR-CMPRE sy-vline 
WA_VBKREDET_STR-MBDAT sy-vline 
WA_VBKREDET_STR-OLFMNG sy-vline 
WA_VBKREDET_STR-KWKKB sy-vline 
WA_VBKREDET_STR-KWKKC sy-vline 
WA_VBKREDET_STR-KWKKD sy-vline 
WA_VBKREDET_STR-KWKKE sy-vline 
WA_VBKREDET_STR-KWKKF sy-vline 
WA_VBKREDET_STR-KWKKG sy-vline 
WA_VBKREDET_STR-LCNUM sy-vline 
WA_VBKREDET_STR-DUMMY sy-vline      INTO ld_text SEPARATED BY SPACE.

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