ABAP Select data from SAP table BWKBP 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 BWKBP 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 BWKBP. 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 BWKBP 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_BWKBP TYPE STANDARD TABLE OF BWKBP,
      WA_BWKBP TYPE BWKBP,
      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: <BWKBP> TYPE BWKBP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BWKBP
*  INTO TABLE @DATA(IT_BWKBP2).
*--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_BWKBP INDEX 1 INTO DATA(WA_BWKBP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BWKBP>-MANDT = 1.
<BWKBP>-KBELN = 1.
<BWKBP>-KBELP = 1.
<BWKBP>-EKKAB = 1.
<BWKBP>-EKKBI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BWKBP-VKKAB, sy-vline,
  WA_BWKBP-VKKBI, sy-vline,
  WA_BWKBP-EKNUM, sy-vline,
  WA_BWKBP-VKNUM, sy-vline,
  WA_BWKBP-EKAPP, sy-vline,
  WA_BWKBP-EKALS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BWKBP 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_BWKBP 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_BWKBP INTO WA_BWKBP.


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

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

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

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

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

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

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

*Conversion exit KOTAB, internal->external for field VKOTABN
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_BWKBP-VKOTABN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BWKBP-VKOTABN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KOTAB, internal->external for field VKOTABA
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_BWKBP-VKOTABA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BWKBP-VKOTABA.
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_BWKBP_STR, 
MANDT TYPE STRING,
KBELN TYPE STRING,
KBELP TYPE STRING,
EKKAB TYPE STRING,
EKKBI TYPE STRING,
VKKAB TYPE STRING,
VKKBI TYPE STRING,
EKNUM TYPE STRING,
VKNUM TYPE STRING,
EKAPP TYPE STRING,
EKALS TYPE STRING,
VKALS TYPE STRING,
MATKL TYPE STRING,
MATNR TYPE STRING,
VRKPE TYPE STRING,
VRKME TYPE STRING,
EAN11 TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
WERKS TYPE STRING,
EKORG TYPE STRING,
HWAER TYPE STRING,
LIFNR TYPE STRING,
LTSNR TYPE STRING,
WAERS TYPE STRING,
EKPGR TYPE STRING,
EKPNN TYPE STRING,
AUFSG TYPE STRING,
PAUFS TYPE STRING,
PENDP TYPE STRING,
VKPNE TYPE STRING,
VKPBR TYPE STRING,
KWAER TYPE STRING,
ENDPR TYPE STRING,
SPANE TYPE STRING,
SPABR TYPE STRING,
ENDPA TYPE STRING,
SPANA TYPE STRING,
SPABA TYPE STRING,
ROTPR TYPE STRING,
MITPR TYPE STRING,
EMPPR TYPE STRING,
VORPR TYPE STRING,
VKP01 TYPE STRING,
VKP02 TYPE STRING,
VKP03 TYPE STRING,
PROZ1 TYPE STRING,
PROZ2 TYPE STRING,
EVAUF TYPE STRING,
EVPRS TYPE STRING,
EVSPA TYPE STRING,
BPSTA TYPE STRING,
PLTYP TYPE STRING,
VKABA TYPE STRING,
VKBIA TYPE STRING,
INFWK TYPE STRING,
ESOKZ TYPE STRING,
EVPAU TYPE STRING,
CKNUM TYPE STRING,
VWAER TYPE STRING,
EVWRS TYPE STRING,
EGKAL TYPE STRING,
INIPR TYPE STRING,
KNUMH_V TYPE STRING,
EKERV TYPE STRING,
BWERA TYPE STRING,
EKERA TYPE STRING,
EFNAM TYPE STRING,
VKERV TYPE STRING,
VKERA TYPE STRING,
LIFEL TYPE STRING,
ECKKZ TYPE STRING,
PVGRD TYPE STRING,
FAMNR TYPE STRING,
GRP01 TYPE STRING,
FMTYP TYPE STRING,
SMATN TYPE STRING,
FCHAL TYPE STRING,
FHIDE TYPE STRING,
EPRGR TYPE STRING,
EPRG2 TYPE STRING,
NEPGR TYPE STRING,
NEPG2 TYPE STRING,
INIAM TYPE STRING,
EPTYP TYPE STRING,
EPTY2 TYPE STRING,
RKTYP TYPE STRING,
RKTY2 TYPE STRING,
BGINT TYPE STRING,
STPLGR TYPE STRING,
VLGWK TYPE STRING,
KALEB TYPE STRING,
VKSCH TYPE STRING,
VKOTABN TYPE STRING,
KALEA TYPE STRING,
VKSCA TYPE STRING,
VKOTABA TYPE STRING,
UPDKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BWKBP_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_BWKBP_STR-MANDT sy-vline 
WA_BWKBP_STR-KBELN sy-vline 
WA_BWKBP_STR-KBELP sy-vline 
WA_BWKBP_STR-EKKAB sy-vline 
WA_BWKBP_STR-EKKBI sy-vline 
WA_BWKBP_STR-VKKAB sy-vline 
WA_BWKBP_STR-VKKBI sy-vline 
WA_BWKBP_STR-EKNUM sy-vline 
WA_BWKBP_STR-VKNUM sy-vline 
WA_BWKBP_STR-EKAPP sy-vline 
WA_BWKBP_STR-EKALS sy-vline 
WA_BWKBP_STR-VKALS sy-vline 
WA_BWKBP_STR-MATKL sy-vline 
WA_BWKBP_STR-MATNR sy-vline 
WA_BWKBP_STR-VRKPE sy-vline 
WA_BWKBP_STR-VRKME sy-vline 
WA_BWKBP_STR-EAN11 sy-vline 
WA_BWKBP_STR-VKORG sy-vline 
WA_BWKBP_STR-VTWEG sy-vline 
WA_BWKBP_STR-WERKS sy-vline 
WA_BWKBP_STR-EKORG sy-vline 
WA_BWKBP_STR-HWAER sy-vline 
WA_BWKBP_STR-LIFNR sy-vline 
WA_BWKBP_STR-LTSNR sy-vline 
WA_BWKBP_STR-WAERS sy-vline 
WA_BWKBP_STR-EKPGR sy-vline 
WA_BWKBP_STR-EKPNN sy-vline 
WA_BWKBP_STR-AUFSG sy-vline 
WA_BWKBP_STR-PAUFS sy-vline 
WA_BWKBP_STR-PENDP sy-vline 
WA_BWKBP_STR-VKPNE sy-vline 
WA_BWKBP_STR-VKPBR sy-vline 
WA_BWKBP_STR-KWAER sy-vline 
WA_BWKBP_STR-ENDPR sy-vline 
WA_BWKBP_STR-SPANE sy-vline 
WA_BWKBP_STR-SPABR sy-vline 
WA_BWKBP_STR-ENDPA sy-vline 
WA_BWKBP_STR-SPANA sy-vline 
WA_BWKBP_STR-SPABA sy-vline 
WA_BWKBP_STR-ROTPR sy-vline 
WA_BWKBP_STR-MITPR sy-vline 
WA_BWKBP_STR-EMPPR sy-vline 
WA_BWKBP_STR-VORPR sy-vline 
WA_BWKBP_STR-VKP01 sy-vline 
WA_BWKBP_STR-VKP02 sy-vline 
WA_BWKBP_STR-VKP03 sy-vline 
WA_BWKBP_STR-PROZ1 sy-vline 
WA_BWKBP_STR-PROZ2 sy-vline 
WA_BWKBP_STR-EVAUF sy-vline 
WA_BWKBP_STR-EVPRS sy-vline 
WA_BWKBP_STR-EVSPA sy-vline 
WA_BWKBP_STR-BPSTA sy-vline 
WA_BWKBP_STR-PLTYP sy-vline 
WA_BWKBP_STR-VKABA sy-vline 
WA_BWKBP_STR-VKBIA sy-vline 
WA_BWKBP_STR-INFWK sy-vline 
WA_BWKBP_STR-ESOKZ sy-vline 
WA_BWKBP_STR-EVPAU sy-vline 
WA_BWKBP_STR-CKNUM sy-vline 
WA_BWKBP_STR-VWAER sy-vline 
WA_BWKBP_STR-EVWRS sy-vline 
WA_BWKBP_STR-EGKAL sy-vline 
WA_BWKBP_STR-INIPR sy-vline 
WA_BWKBP_STR-KNUMH_V sy-vline 
WA_BWKBP_STR-EKERV sy-vline 
WA_BWKBP_STR-BWERA sy-vline 
WA_BWKBP_STR-EKERA sy-vline 
WA_BWKBP_STR-EFNAM sy-vline 
WA_BWKBP_STR-VKERV sy-vline 
WA_BWKBP_STR-VKERA sy-vline 
WA_BWKBP_STR-LIFEL sy-vline 
WA_BWKBP_STR-ECKKZ sy-vline 
WA_BWKBP_STR-PVGRD sy-vline 
WA_BWKBP_STR-FAMNR sy-vline 
WA_BWKBP_STR-GRP01 sy-vline 
WA_BWKBP_STR-FMTYP sy-vline 
WA_BWKBP_STR-SMATN sy-vline 
WA_BWKBP_STR-FCHAL sy-vline 
WA_BWKBP_STR-FHIDE sy-vline 
WA_BWKBP_STR-EPRGR sy-vline 
WA_BWKBP_STR-EPRG2 sy-vline 
WA_BWKBP_STR-NEPGR sy-vline 
WA_BWKBP_STR-NEPG2 sy-vline 
WA_BWKBP_STR-INIAM sy-vline 
WA_BWKBP_STR-EPTYP sy-vline 
WA_BWKBP_STR-EPTY2 sy-vline 
WA_BWKBP_STR-RKTYP sy-vline 
WA_BWKBP_STR-RKTY2 sy-vline 
WA_BWKBP_STR-BGINT sy-vline 
WA_BWKBP_STR-STPLGR sy-vline 
WA_BWKBP_STR-VLGWK sy-vline 
WA_BWKBP_STR-KALEB sy-vline 
WA_BWKBP_STR-VKSCH sy-vline 
WA_BWKBP_STR-VKOTABN sy-vline 
WA_BWKBP_STR-KALEA sy-vline 
WA_BWKBP_STR-VKSCA sy-vline 
WA_BWKBP_STR-VKOTABA sy-vline 
WA_BWKBP_STR-UPDKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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