ABAP Select data from SAP table BFKKCP into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BFKKCP
*  INTO TABLE @DATA(IT_BFKKCP2).
*--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_BFKKCP INDEX 1 INTO DATA(WA_BFKKCP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BFKKCP>-STYPE = 1.
<BFKKCP>-TBNAM = 1.
<BFKKCP>-ZTNUM = 1.
<BFKKCP>-BUDAT = 1.
<BFKKCP>-BLDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BFKKCP-VALUT, sy-vline,
  WA_BFKKCP-ORIWA, sy-vline,
  WA_BFKKCP-ORIBT, sy-vline,
  WA_BFKKCP-WAERS, sy-vline,
  WA_BFKKCP-BETRW, sy-vline,
  WA_BFKKCP-XBLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BFKKCP 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_BFKKCP 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_BFKKCP INTO WA_BFKKCP.


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

*Conversion exit ALPHA, internal->external for field XBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BFKKCP-XBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BFKKCP-XBLNR.
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_BFKKCP_STR, 
STYPE TYPE STRING,
TBNAM TYPE STRING,
ZTNUM TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
VALUT TYPE STRING,
ORIWA TYPE STRING,
ORIBT TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
XBLNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BFKKCP_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_BFKKCP_STR-STYPE sy-vline 
WA_BFKKCP_STR-TBNAM sy-vline 
WA_BFKKCP_STR-ZTNUM sy-vline 
WA_BFKKCP_STR-BUDAT sy-vline 
WA_BFKKCP_STR-BLDAT sy-vline 
WA_BFKKCP_STR-VALUT sy-vline 
WA_BFKKCP_STR-ORIWA sy-vline 
WA_BFKKCP_STR-ORIBT sy-vline 
WA_BFKKCP_STR-WAERS sy-vline 
WA_BFKKCP_STR-BETRW sy-vline 
WA_BFKKCP_STR-XBLNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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