ABAP Select data from SAP table IBKK_DI_HD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IBKK_DI_HD
*  INTO TABLE @DATA(IT_IBKK_DI_HD2).
*--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_IBKK_DI_HD INDEX 1 INTO DATA(WA_IBKK_DI_HD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IBKK_DI_HD>-AKTYP = 1.
<IBKK_DI_HD>-RLTP1 = 1.
<IBKK_DI_HD>-RLTP2 = 1.
<IBKK_DI_HD>-RLTP3 = 1.
<IBKK_DI_HD>-RLTP4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IBKK_DI_HD-RLTP5, sy-vline,
  WA_IBKK_DI_HD-RLTP6, sy-vline,
  WA_IBKK_DI_HD-RLTP7, sy-vline,
  WA_IBKK_DI_HD-RLTP8, sy-vline,
  WA_IBKK_DI_HD-RLTP9, sy-vline,
  WA_IBKK_DI_HD-BKKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IBKK_DI_HD 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_IBKK_DI_HD 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_IBKK_DI_HD INTO WA_IBKK_DI_HD.


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

*Conversion exit ACEXT, internal->external for field ACNUM_EXT
CALL FUNCTION 'CONVERSION_EXIT_ACEXT_OUTPUT'
  EXPORTING
    input =                      WA_IBKK_DI_HD-ACNUM_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IBKK_DI_HD-ACNUM_EXT.
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_IBKK_DI_HD_STR, 
AKTYP TYPE STRING,
RLTP1 TYPE STRING,
RLTP2 TYPE STRING,
RLTP3 TYPE STRING,
RLTP4 TYPE STRING,
RLTP5 TYPE STRING,
RLTP6 TYPE STRING,
RLTP7 TYPE STRING,
RLTP8 TYPE STRING,
RLTP9 TYPE STRING,
BKKRS TYPE STRING,
ACNUM_INT TYPE STRING,
ACNUM_EXT TYPE STRING,
BKS TYPE STRING,
PRODEXT TYPE STRING,
XOFFER TYPE STRING,
XCHKDIG TYPE STRING,
OPENDATE TYPE STRING,
XCHECK_RELEASE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IBKK_DI_HD_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_IBKK_DI_HD_STR-AKTYP sy-vline 
WA_IBKK_DI_HD_STR-RLTP1 sy-vline 
WA_IBKK_DI_HD_STR-RLTP2 sy-vline 
WA_IBKK_DI_HD_STR-RLTP3 sy-vline 
WA_IBKK_DI_HD_STR-RLTP4 sy-vline 
WA_IBKK_DI_HD_STR-RLTP5 sy-vline 
WA_IBKK_DI_HD_STR-RLTP6 sy-vline 
WA_IBKK_DI_HD_STR-RLTP7 sy-vline 
WA_IBKK_DI_HD_STR-RLTP8 sy-vline 
WA_IBKK_DI_HD_STR-RLTP9 sy-vline 
WA_IBKK_DI_HD_STR-BKKRS sy-vline 
WA_IBKK_DI_HD_STR-ACNUM_INT sy-vline 
WA_IBKK_DI_HD_STR-ACNUM_EXT sy-vline 
WA_IBKK_DI_HD_STR-BKS sy-vline 
WA_IBKK_DI_HD_STR-PRODEXT sy-vline 
WA_IBKK_DI_HD_STR-XOFFER sy-vline 
WA_IBKK_DI_HD_STR-XCHKDIG sy-vline 
WA_IBKK_DI_HD_STR-OPENDATE sy-vline 
WA_IBKK_DI_HD_STR-XCHECK_RELEASE sy-vline      INTO ld_text SEPARATED BY SPACE.

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