ABAP Select data from SAP table BAPIDFKKKO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIDFKKKO
*  INTO TABLE @DATA(IT_BAPIDFKKKO2).
*--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_BAPIDFKKKO INDEX 1 INTO DATA(WA_BAPIDFKKKO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIDFKKKO>-DOC_NO = 1.
<BAPIDFKKKO>-FIKEY = 1.
<BAPIDFKKKO>-APPL_AREA = 1.
<BAPIDFKKKO>-DOC_TYPE = 1.
<BAPIDFKKKO>-DOC_SOURCE_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIDFKKKO-CREATED_BY, sy-vline,
  WA_BAPIDFKKKO-ENTRY_DATE, sy-vline,
  WA_BAPIDFKKKO-ENTRY_TIME, sy-vline,
  WA_BAPIDFKKKO-CURRENCY, sy-vline,
  WA_BAPIDFKKKO-CURRENCY_ISO, sy-vline,
  WA_BAPIDFKKKO-DOC_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIDFKKKO 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_BAPIDFKKKO 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_BAPIDFKKKO INTO WA_BAPIDFKKKO.


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

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

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

*Conversion exit ALPHA, internal->external for field OBJ_SYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIDFKKKO-OBJ_SYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIDFKKKO-OBJ_SYS.
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_BAPIDFKKKO_STR, 
DOC_NO TYPE STRING,
FIKEY TYPE STRING,
APPL_AREA TYPE STRING,
DOC_TYPE TYPE STRING,
DOC_SOURCE_KEY TYPE STRING,
CREATED_BY TYPE STRING,
ENTRY_DATE TYPE STRING,
ENTRY_TIME TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_ISO TYPE STRING,
DOC_DATE TYPE STRING,
POST_DATE TYPE STRING,
TRANS_DATE TYPE STRING,
REF_DOC_NO TYPE STRING,
RETURN_REASON TYPE STRING,
CHARGE_OFF_REASON TYPE STRING,
SINGLE_DOC TYPE STRING,
VALUATION_DOC TYPE STRING,
OBJ_TYPE TYPE STRING,
OBJ_KEY TYPE STRING,
REVERSED_DOC TYPE STRING,
COC_CATEGORY TYPE STRING,
CLEAR_INFO TYPE STRING,
TAX_COMP_CODE TYPE STRING,
SAMPLE_DOC TYPE STRING,
OBJ_SYS TYPE STRING,
CLASS_KEY TYPE STRING,
CM_MESSAGE_ID TYPE STRING,
SPECIAL_PERIOD TYPE STRING,
GL_DOC_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIDFKKKO_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_BAPIDFKKKO_STR-DOC_NO sy-vline 
WA_BAPIDFKKKO_STR-FIKEY sy-vline 
WA_BAPIDFKKKO_STR-APPL_AREA sy-vline 
WA_BAPIDFKKKO_STR-DOC_TYPE sy-vline 
WA_BAPIDFKKKO_STR-DOC_SOURCE_KEY sy-vline 
WA_BAPIDFKKKO_STR-CREATED_BY sy-vline 
WA_BAPIDFKKKO_STR-ENTRY_DATE sy-vline 
WA_BAPIDFKKKO_STR-ENTRY_TIME sy-vline 
WA_BAPIDFKKKO_STR-CURRENCY sy-vline 
WA_BAPIDFKKKO_STR-CURRENCY_ISO sy-vline 
WA_BAPIDFKKKO_STR-DOC_DATE sy-vline 
WA_BAPIDFKKKO_STR-POST_DATE sy-vline 
WA_BAPIDFKKKO_STR-TRANS_DATE sy-vline 
WA_BAPIDFKKKO_STR-REF_DOC_NO sy-vline 
WA_BAPIDFKKKO_STR-RETURN_REASON sy-vline 
WA_BAPIDFKKKO_STR-CHARGE_OFF_REASON sy-vline 
WA_BAPIDFKKKO_STR-SINGLE_DOC sy-vline 
WA_BAPIDFKKKO_STR-VALUATION_DOC sy-vline 
WA_BAPIDFKKKO_STR-OBJ_TYPE sy-vline 
WA_BAPIDFKKKO_STR-OBJ_KEY sy-vline 
WA_BAPIDFKKKO_STR-REVERSED_DOC sy-vline 
WA_BAPIDFKKKO_STR-COC_CATEGORY sy-vline 
WA_BAPIDFKKKO_STR-CLEAR_INFO sy-vline 
WA_BAPIDFKKKO_STR-TAX_COMP_CODE sy-vline 
WA_BAPIDFKKKO_STR-SAMPLE_DOC sy-vline 
WA_BAPIDFKKKO_STR-OBJ_SYS sy-vline 
WA_BAPIDFKKKO_STR-CLASS_KEY sy-vline 
WA_BAPIDFKKKO_STR-CM_MESSAGE_ID sy-vline 
WA_BAPIDFKKKO_STR-SPECIAL_PERIOD sy-vline 
WA_BAPIDFKKKO_STR-GL_DOC_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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