ABAP Select data from SAP table IKDBTAB 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 IKDBTAB 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 IKDBTAB. 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 IKDBTAB 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_IKDBTAB TYPE STANDARD TABLE OF IKDBTAB,
      WA_IKDBTAB TYPE IKDBTAB,
      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: <IKDBTAB> TYPE IKDBTAB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IKDBTAB
*  INTO TABLE @DATA(IT_IKDBTAB2).
*--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_IKDBTAB INDEX 1 INTO DATA(WA_IKDBTAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IKDBTAB>-BUKRS = 1.
<IKDBTAB>-HKONT = 1.
<IKDBTAB>-GSBER = 1.
<IKDBTAB>-BUPLA = 1.
<IKDBTAB>-VBUND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IKDBTAB-WAERS, sy-vline,
  WA_IKDBTAB-XBIKO, sy-vline,
  WA_IKDBTAB-XRUND, sy-vline,
  WA_IKDBTAB-DMBTR, sy-vline,
  WA_IKDBTAB-DMBE2, sy-vline,
  WA_IKDBTAB-DMBE3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IKDBTAB 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_IKDBTAB 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_IKDBTAB INTO WA_IKDBTAB.


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

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

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IKDBTAB-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IKDBTAB-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IKDBTAB-DMBE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IKDBTAB-DMBE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IKDBTAB-DMBE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IKDBTAB-DMBE3.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PSEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IKDBTAB-PSEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IKDBTAB-PSEGMENT.
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_IKDBTAB_STR, 
BUKRS TYPE STRING,
HKONT TYPE STRING,
GSBER TYPE STRING,
BUPLA TYPE STRING,
VBUND TYPE STRING,
WAERS TYPE STRING,
XBIKO TYPE STRING,
XRUND TYPE STRING,
DMBTR TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,
ADDAA TYPE STRING,
PRCTR TYPE STRING,
PPRCT TYPE STRING,
SEGMENT TYPE STRING,
PSEGMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IKDBTAB_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_IKDBTAB_STR-BUKRS sy-vline 
WA_IKDBTAB_STR-HKONT sy-vline 
WA_IKDBTAB_STR-GSBER sy-vline 
WA_IKDBTAB_STR-BUPLA sy-vline 
WA_IKDBTAB_STR-VBUND sy-vline 
WA_IKDBTAB_STR-WAERS sy-vline 
WA_IKDBTAB_STR-XBIKO sy-vline 
WA_IKDBTAB_STR-XRUND sy-vline 
WA_IKDBTAB_STR-DMBTR sy-vline 
WA_IKDBTAB_STR-DMBE2 sy-vline 
WA_IKDBTAB_STR-DMBE3 sy-vline 
WA_IKDBTAB_STR-ADDAA sy-vline 
WA_IKDBTAB_STR-PRCTR sy-vline 
WA_IKDBTAB_STR-PPRCT sy-vline 
WA_IKDBTAB_STR-SEGMENT sy-vline 
WA_IKDBTAB_STR-PSEGMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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