ABAP Select data from SAP table VKK_ICDA_DATA_DET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VKK_ICDA_DATA_DET
*  INTO TABLE @DATA(IT_VKK_ICDA_DATA_DET2).
*--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_VKK_ICDA_DATA_DET INDEX 1 INTO DATA(WA_VKK_ICDA_DATA_DET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VKK_ICDA_DATA_DET>-HEAD = 1.
<VKK_ICDA_DATA_DET>-ICDA_ID = 1.
<VKK_ICDA_DATA_DET>-BCON_TYPE = 1.
<VKK_ICDA_DATA_DET>-BCON_ID = 1.
<VKK_ICDA_DATA_DET>-BCON_ITEM_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VKK_ICDA_DATA_DET-BCON_ITEM_ID, sy-vline,
  WA_VKK_ICDA_DATA_DET-BCON_BUSSYS, sy-vline,
  WA_VKK_ICDA_DATA_DET-DESCRIPTION, sy-vline,
  WA_VKK_ICDA_DATA_DET-TYPE_CODE, sy-vline,
  WA_VKK_ICDA_DATA_DET-SUBTYPE_CODE, sy-vline,
  WA_VKK_ICDA_DATA_DET-SUBTYPE_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VKK_ICDA_DATA_DET 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_VKK_ICDA_DATA_DET 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_VKK_ICDA_DATA_DET INTO WA_VKK_ICDA_DATA_DET.


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

*Conversion exit ISOLA, internal->external for field SUBTYPE_SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_VKK_ICDA_DATA_DET-SUBTYPE_SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VKK_ICDA_DATA_DET-SUBTYPE_SPRAS.
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_VKK_ICDA_DATA_DET_STR, 
HEAD TYPE STRING,
ICDA_ID TYPE STRING,
BCON_TYPE TYPE STRING,
BCON_ID TYPE STRING,
BCON_ITEM_TYPE TYPE STRING,
BCON_ITEM_ID TYPE STRING,
BCON_BUSSYS TYPE STRING,
DESCRIPTION TYPE STRING,
TYPE_CODE TYPE STRING,
SUBTYPE_CODE TYPE STRING,
SUBTYPE_NAME TYPE STRING,
SUBTYPE_SPRAS TYPE STRING,
CANCEL_REASON_CODE TYPE STRING,
PARTNERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VKK_ICDA_DATA_DET_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_VKK_ICDA_DATA_DET_STR-HEAD sy-vline 
WA_VKK_ICDA_DATA_DET_STR-ICDA_ID sy-vline 
WA_VKK_ICDA_DATA_DET_STR-BCON_TYPE sy-vline 
WA_VKK_ICDA_DATA_DET_STR-BCON_ID sy-vline 
WA_VKK_ICDA_DATA_DET_STR-BCON_ITEM_TYPE sy-vline 
WA_VKK_ICDA_DATA_DET_STR-BCON_ITEM_ID sy-vline 
WA_VKK_ICDA_DATA_DET_STR-BCON_BUSSYS sy-vline 
WA_VKK_ICDA_DATA_DET_STR-DESCRIPTION sy-vline 
WA_VKK_ICDA_DATA_DET_STR-TYPE_CODE sy-vline 
WA_VKK_ICDA_DATA_DET_STR-SUBTYPE_CODE sy-vline 
WA_VKK_ICDA_DATA_DET_STR-SUBTYPE_NAME sy-vline 
WA_VKK_ICDA_DATA_DET_STR-SUBTYPE_SPRAS sy-vline 
WA_VKK_ICDA_DATA_DET_STR-CANCEL_REASON_CODE sy-vline 
WA_VKK_ICDA_DATA_DET_STR-PARTNERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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