ABAP Select data from SAP table BKOND2B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BKOND2B 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 BKOND2B. 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 BKOND2B 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_BKOND2B TYPE STANDARD TABLE OF BKOND2B,
      WA_BKOND2B TYPE BKOND2B,
      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: <BKOND2B> TYPE BKOND2B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BKOND2B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BKOND2B
  INTO TABLE IT_BKOND2B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKOND2B
*  INTO TABLE @DATA(IT_BKOND2B2).
*--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_BKOND2B INDEX 1 INTO DATA(WA_BKOND2B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BKOND2B ASSIGNING <BKOND2B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKOND2B>-STYPE = 1.
<BKOND2B>-VAKEY = 1.
<BKOND2B>-DATBI = 1.
<BKOND2B>-DATAB = 1.
<BKOND2B>-KBETR = 1.

ENDLOOP.

LOOP AT IT_BKOND2B INTO WA_BKOND2B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKOND2B-KONWA, sy-vline,
  WA_BKOND2B-KPEIN, sy-vline,
  WA_BKOND2B-KMEIN, sy-vline,
  WA_BKOND2B-KONMS, sy-vline,
  WA_BKOND2B-MXWRT, sy-vline,
  WA_BKOND2B-GKWRT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKOND2B 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_BKOND2B 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_BKOND2B INTO WA_BKOND2B.


*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 KONMS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BKOND2B-KONMS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKOND2B-KONMS.
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_BKOND2B_STR, 
STYPE TYPE STRING,
VAKEY TYPE STRING,
DATBI TYPE STRING,
DATAB TYPE STRING,
KBETR TYPE STRING,
KONWA TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KONMS TYPE STRING,
MXWRT TYPE STRING,
GKWRT TYPE STRING,
STFKZ TYPE STRING,
KZNEP TYPE STRING,
LOEVM_KO TYPE STRING,
VAKEY_LONG TYPE STRING,
VAKEY_VERSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKOND2B_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_BKOND2B_STR-STYPE sy-vline 
WA_BKOND2B_STR-VAKEY sy-vline 
WA_BKOND2B_STR-DATBI sy-vline 
WA_BKOND2B_STR-DATAB sy-vline 
WA_BKOND2B_STR-KBETR sy-vline 
WA_BKOND2B_STR-KONWA sy-vline 
WA_BKOND2B_STR-KPEIN sy-vline 
WA_BKOND2B_STR-KMEIN sy-vline 
WA_BKOND2B_STR-KONMS sy-vline 
WA_BKOND2B_STR-MXWRT sy-vline 
WA_BKOND2B_STR-GKWRT sy-vline 
WA_BKOND2B_STR-STFKZ sy-vline 
WA_BKOND2B_STR-KZNEP sy-vline 
WA_BKOND2B_STR-LOEVM_KO sy-vline 
WA_BKOND2B_STR-VAKEY_LONG sy-vline 
WA_BKOND2B_STR-VAKEY_VERSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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