ABAP Select data from SAP table IBKKM8 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IBKKM8 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 IBKKM8. 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 IBKKM8 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_IBKKM8 TYPE STANDARD TABLE OF IBKKM8,
      WA_IBKKM8 TYPE IBKKM8,
      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: <IBKKM8> TYPE IBKKM8.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IBKKM8.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IBKKM8
  INTO TABLE IT_IBKKM8.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IBKKM8
*  INTO TABLE @DATA(IT_IBKKM82).
*--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_IBKKM8 INDEX 1 INTO DATA(WA_IBKKM82).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IBKKM8 ASSIGNING <IBKKM8>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IBKKM8>-SBALANCE = 1.
<IBKKM8>-EBALANCE = 1.
<IBKKM8>-CURRENCY = 1.
<IBKKM8>-FDATEPOST = 1.
<IBKKM8>-FTIMEPOST = 1.

ENDLOOP.

LOOP AT IT_IBKKM8 INTO WA_IBKKM8.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IBKKM8-FDOCNPOST, sy-vline,
  WA_IBKKM8-LDATEPOST, sy-vline,
  WA_IBKKM8-LTIMEPOST, sy-vline,
  WA_IBKKM8-LDOCNPOST, sy-vline,
  WA_IBKKM8-CDATEPOST, sy-vline,
  WA_IBKKM8-CTIMEPOST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IBKKM8 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_IBKKM8 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_IBKKM8 INTO WA_IBKKM8.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IBKKM8_STR, 
SBALANCE TYPE STRING,
EBALANCE TYPE STRING,
CURRENCY TYPE STRING,
FDATEPOST TYPE STRING,
FTIMEPOST TYPE STRING,
FDOCNPOST TYPE STRING,
LDATEPOST TYPE STRING,
LTIMEPOST TYPE STRING,
LDOCNPOST TYPE STRING,
CDATEPOST TYPE STRING,
CTIMEPOST TYPE STRING,
XACCNTCLOS TYPE STRING,
SDATEPOSTL TYPE STRING,
SDATEPOSTH TYPE STRING,
BKSTSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IBKKM8_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_IBKKM8_STR-SBALANCE sy-vline 
WA_IBKKM8_STR-EBALANCE sy-vline 
WA_IBKKM8_STR-CURRENCY sy-vline 
WA_IBKKM8_STR-FDATEPOST sy-vline 
WA_IBKKM8_STR-FTIMEPOST sy-vline 
WA_IBKKM8_STR-FDOCNPOST sy-vline 
WA_IBKKM8_STR-LDATEPOST sy-vline 
WA_IBKKM8_STR-LTIMEPOST sy-vline 
WA_IBKKM8_STR-LDOCNPOST sy-vline 
WA_IBKKM8_STR-CDATEPOST sy-vline 
WA_IBKKM8_STR-CTIMEPOST sy-vline 
WA_IBKKM8_STR-XACCNTCLOS sy-vline 
WA_IBKKM8_STR-SDATEPOSTL sy-vline 
WA_IBKKM8_STR-SDATEPOSTH sy-vline 
WA_IBKKM8_STR-BKSTSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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