ABAP Select data from SAP table BKPFX 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 BKPFX 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 BKPFX. 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 BKPFX 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_BKPFX TYPE STANDARD TABLE OF BKPFX,
      WA_BKPFX TYPE BKPFX,
      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: <BKPFX> TYPE BKPFX.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKPFX
*  INTO TABLE @DATA(IT_BKPFX2).
*--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_BKPFX INDEX 1 INTO DATA(WA_BKPFX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKPFX>-HWAER = 1.
<BKPFX>-HWAE2 = 1.
<BKPFX>-HWAE3 = 1.
<BKPFX>-CURT2 = 1.
<BKPFX>-CURT3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKPFX-KURS2, sy-vline,
  WA_BKPFX-KURS3, sy-vline,
  WA_BKPFX-TXKRS, sy-vline,
  WA_BKPFX-KUTY2, sy-vline,
  WA_BKPFX-KUTY3, sy-vline,
  WA_BKPFX-BASW2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKPFX 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_BKPFX 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_BKPFX INTO WA_BKPFX.


*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 EXCRT, internal->external for field KURS2
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_BKPFX-KURS2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKPFX-KURS2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURS3
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_BKPFX-KURS3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKPFX-KURS3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field TXKRS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_BKPFX-TXKRS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKPFX-TXKRS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRX, internal->external for field KURSX
CALL FUNCTION 'CONVERSION_EXIT_EXCRX_OUTPUT'
  EXPORTING
    input =                      WA_BKPFX-KURSX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKPFX-KURSX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRX, internal->external for field KUR2X
CALL FUNCTION 'CONVERSION_EXIT_EXCRX_OUTPUT'
  EXPORTING
    input =                      WA_BKPFX-KUR2X
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKPFX-KUR2X.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRX, internal->external for field KUR3X
CALL FUNCTION 'CONVERSION_EXIT_EXCRX_OUTPUT'
  EXPORTING
    input =                      WA_BKPFX-KUR3X
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKPFX-KUR3X.
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_BKPFX_STR, 
HWAER TYPE STRING,
HWAE2 TYPE STRING,
HWAE3 TYPE STRING,
CURT2 TYPE STRING,
CURT3 TYPE STRING,
KURS2 TYPE STRING,
KURS3 TYPE STRING,
TXKRS TYPE STRING,
KUTY2 TYPE STRING,
KUTY3 TYPE STRING,
BASW2 TYPE STRING,
BASW3 TYPE STRING,
UMRD2 TYPE STRING,
UMRD3 TYPE STRING,
BVORG TYPE STRING,
AWKEY TYPE STRING,
KURSX TYPE STRING,
KUR2X TYPE STRING,
KUR3X TYPE STRING,
XMCA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKPFX_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_BKPFX_STR-HWAER sy-vline 
WA_BKPFX_STR-HWAE2 sy-vline 
WA_BKPFX_STR-HWAE3 sy-vline 
WA_BKPFX_STR-CURT2 sy-vline 
WA_BKPFX_STR-CURT3 sy-vline 
WA_BKPFX_STR-KURS2 sy-vline 
WA_BKPFX_STR-KURS3 sy-vline 
WA_BKPFX_STR-TXKRS sy-vline 
WA_BKPFX_STR-KUTY2 sy-vline 
WA_BKPFX_STR-KUTY3 sy-vline 
WA_BKPFX_STR-BASW2 sy-vline 
WA_BKPFX_STR-BASW3 sy-vline 
WA_BKPFX_STR-UMRD2 sy-vline 
WA_BKPFX_STR-UMRD3 sy-vline 
WA_BKPFX_STR-BVORG sy-vline 
WA_BKPFX_STR-AWKEY sy-vline 
WA_BKPFX_STR-KURSX sy-vline 
WA_BKPFX_STR-KUR2X sy-vline 
WA_BKPFX_STR-KUR3X sy-vline 
WA_BKPFX_STR-XMCA sy-vline      INTO ld_text SEPARATED BY SPACE.

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