ABAP Select data from SAP table BKPF_SUBST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKPF_SUBST
*  INTO TABLE @DATA(IT_BKPF_SUBST2).
*--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_BKPF_SUBST INDEX 1 INTO DATA(WA_BKPF_SUBST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKPF_SUBST>-TABIX = 1.
<BKPF_SUBST>-XBLNR = 1.
<BKPF_SUBST>-BKTXT = 1.
<BKPF_SUBST>-BRNCH = 1.
<BKPF_SUBST>-XREF1_HD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKPF_SUBST-XREF2_HD, sy-vline,
  WA_BKPF_SUBST-/SAPF15/STATUS, sy-vline,
  WA_BKPF_SUBST-PSOBT, sy-vline,
  WA_BKPF_SUBST-PSOZL, sy-vline,
  WA_BKPF_SUBST-XBLNR_ALT, sy-vline,
  WA_BKPF_SUBST-NUMPG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKPF_SUBST 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_BKPF_SUBST 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_BKPF_SUBST INTO WA_BKPF_SUBST.


*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 ODNIT, internal->external for field XBLNR_ALT
CALL FUNCTION 'CONVERSION_EXIT_ODNIT_OUTPUT'
  EXPORTING
    input =                      WA_BKPF_SUBST-XBLNR_ALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKPF_SUBST-XBLNR_ALT.
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_BKPF_SUBST_STR, 
TABIX TYPE STRING,
XBLNR TYPE STRING,
BKTXT TYPE STRING,
BRNCH TYPE STRING,
XREF1_HD TYPE STRING,
XREF2_HD TYPE STRING,
/SAPF15/STATUS TYPE STRING,
PSOBT TYPE STRING,
PSOZL TYPE STRING,
XBLNR_ALT TYPE STRING,
NUMPG TYPE STRING,
PYBASTYP TYPE STRING,
PYBASNO TYPE STRING,
PYBASDAT TYPE STRING,
PYIBAN TYPE STRING,
INWARDNO_HD TYPE STRING,
INWARDDT_HD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKPF_SUBST_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_BKPF_SUBST_STR-TABIX sy-vline 
WA_BKPF_SUBST_STR-XBLNR sy-vline 
WA_BKPF_SUBST_STR-BKTXT sy-vline 
WA_BKPF_SUBST_STR-BRNCH sy-vline 
WA_BKPF_SUBST_STR-XREF1_HD sy-vline 
WA_BKPF_SUBST_STR-XREF2_HD sy-vline 
WA_BKPF_SUBST_STR-/SAPF15/STATUS sy-vline 
WA_BKPF_SUBST_STR-PSOBT sy-vline 
WA_BKPF_SUBST_STR-PSOZL sy-vline 
WA_BKPF_SUBST_STR-XBLNR_ALT sy-vline 
WA_BKPF_SUBST_STR-NUMPG sy-vline 
WA_BKPF_SUBST_STR-PYBASTYP sy-vline 
WA_BKPF_SUBST_STR-PYBASNO sy-vline 
WA_BKPF_SUBST_STR-PYBASDAT sy-vline 
WA_BKPF_SUBST_STR-PYIBAN sy-vline 
WA_BKPF_SUBST_STR-INWARDNO_HD sy-vline 
WA_BKPF_SUBST_STR-INWARDDT_HD sy-vline      INTO ld_text SEPARATED BY SPACE.

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