ABAP Select data from SAP table KBKO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KBKO
*  INTO TABLE @DATA(IT_KBKO2).
*--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_KBKO INDEX 1 INTO DATA(WA_KBKO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KBKO>-MANDT = 1.
<KBKO>-BEDID = 1.
<KBKO>-TYPKZ = 1.
<KBKO>-AUFPL = 1.
<KBKO>-PLNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KBKO-SAFNR, sy-vline,
  WA_KBKO-PLNTY, sy-vline,
  WA_KBKO-PLNNR, sy-vline,
  WA_KBKO-PLNAL, sy-vline,
  WA_KBKO-OBJNR, sy-vline,
  WA_KBKO-TRMDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KBKO 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_KBKO 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_KBKO INTO WA_KBKO.


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

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

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

*Conversion exit ALPHA, internal->external for field TL_VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KBKO-TL_VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KBKO-TL_VERSN.
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_KBKO_STR, 
MANDT TYPE STRING,
BEDID TYPE STRING,
TYPKZ TYPE STRING,
AUFPL TYPE STRING,
PLNUM TYPE STRING,
SAFNR TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
OBJNR TYPE STRING,
TRMDT TYPE STRING,
GLTRS TYPE STRING,
GLUZS TYPE STRING,
GSTRS TYPE STRING,
GSUZS TYPE STRING,
TERKZ TYPE STRING,
BREAKS TYPE STRING,
REDKZ TYPE STRING,
TRMER TYPE STRING,
TRMHK TYPE STRING,
PLAUF TYPE STRING,
TL_VERSN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KBKO_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_KBKO_STR-MANDT sy-vline 
WA_KBKO_STR-BEDID sy-vline 
WA_KBKO_STR-TYPKZ sy-vline 
WA_KBKO_STR-AUFPL sy-vline 
WA_KBKO_STR-PLNUM sy-vline 
WA_KBKO_STR-SAFNR sy-vline 
WA_KBKO_STR-PLNTY sy-vline 
WA_KBKO_STR-PLNNR sy-vline 
WA_KBKO_STR-PLNAL sy-vline 
WA_KBKO_STR-OBJNR sy-vline 
WA_KBKO_STR-TRMDT sy-vline 
WA_KBKO_STR-GLTRS sy-vline 
WA_KBKO_STR-GLUZS sy-vline 
WA_KBKO_STR-GSTRS sy-vline 
WA_KBKO_STR-GSUZS sy-vline 
WA_KBKO_STR-TERKZ sy-vline 
WA_KBKO_STR-BREAKS sy-vline 
WA_KBKO_STR-REDKZ sy-vline 
WA_KBKO_STR-TRMER sy-vline 
WA_KBKO_STR-TRMHK sy-vline 
WA_KBKO_STR-PLAUF sy-vline 
WA_KBKO_STR-TL_VERSN sy-vline      INTO ld_text SEPARATED BY SPACE.

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