ABAP Select data from SAP table VKK_ICDA_DERIVE_OUT_IO_P 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_DERIVE_OUT_IO_P 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_DERIVE_OUT_IO_P. 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_DERIVE_OUT_IO_P 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_DERIVE_OUT_IO_P TYPE STANDARD TABLE OF VKK_ICDA_DERIVE_OUT_IO_P,
      WA_VKK_ICDA_DERIVE_OUT_IO_P TYPE VKK_ICDA_DERIVE_OUT_IO_P,
      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_DERIVE_OUT_IO_P> TYPE VKK_ICDA_DERIVE_OUT_IO_P.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VKK_ICDA_DERIVE_OUT_IO_P
*  INTO TABLE @DATA(IT_VKK_ICDA_DERIVE_OUT_IO_P2).
*--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_DERIVE_OUT_IO_P INDEX 1 INTO DATA(WA_VKK_ICDA_DERIVE_OUT_IO_P2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VKK_ICDA_DERIVE_OUT_IO_P>-FDGRP = 1.
<VKK_ICDA_DERIVE_OUT_IO_P>-FDZTG = 1.
<VKK_ICDA_DERIVE_OUT_IO_P>-AUGRP = 1.
<VKK_ICDA_DERIVE_OUT_IO_P>-CRTVAR = 1.
<VKK_ICDA_DERIVE_OUT_IO_P>-MVARI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VKK_ICDA_DERIVE_OUT_IO_P-IS_COVAR, sy-vline,
  WA_VKK_ICDA_DERIVE_OUT_IO_P-FAART, sy-vline,
  WA_VKK_ICDA_DERIVE_OUT_IO_P-BASE_DATE, sy-vline,
  WA_VKK_ICDA_DERIVE_OUT_IO_P-CORR_MAHNV, sy-vline,
  WA_VKK_ICDA_DERIVE_OUT_IO_P-EZAWE_X, sy-vline,
  WA_VKK_ICDA_DERIVE_OUT_IO_P-AZAWE_X_1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VKK_ICDA_DERIVE_OUT_IO_P 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_DERIVE_OUT_IO_P 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_DERIVE_OUT_IO_P INTO WA_VKK_ICDA_DERIVE_OUT_IO_P.


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

*Conversion exit ALPHA, internal->external for field CPERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VKK_ICDA_DERIVE_OUT_IO_P-CPERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VKK_ICDA_DERIVE_OUT_IO_P-CPERS.
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_DERIVE_OUT_IO_P_STR, 
FDGRP TYPE STRING,
FDZTG TYPE STRING,
AUGRP TYPE STRING,
CRTVAR TYPE STRING,
MVARI TYPE STRING,
IS_COVAR TYPE STRING,
FAART TYPE STRING,
BASE_DATE TYPE STRING,
CORR_MAHNV TYPE STRING,
EZAWE_X TYPE STRING,
AZAWE_X_1 TYPE STRING,
AZAWE_X_2 TYPE STRING,
AZAWE_X_3 TYPE STRING,
AZAWE_X_4 TYPE STRING,
AZAWE_X_5 TYPE STRING,
IKEY TYPE STRING,
INTPEROFF TYPE STRING,
INTPER TYPE STRING,
INTTO TYPE STRING,
EIGBV TYPE STRING,
POGRU TYPE STRING,
POVER TYPE STRING,
XAKONTO TYPE STRING,
ALKEY TYPE STRING,
CMGRP TYPE STRING,
STRAT TYPE STRING,
CPERS TYPE STRING,
QSSKZ_E TYPE STRING,
QSSKZ_A TYPE STRING,
PERPOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VKK_ICDA_DERIVE_OUT_IO_P_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_DERIVE_OUT_IO_P_STR-FDGRP sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-FDZTG sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-AUGRP sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-CRTVAR sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-MVARI sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-IS_COVAR sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-FAART sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-BASE_DATE sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-CORR_MAHNV sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-EZAWE_X sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-AZAWE_X_1 sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-AZAWE_X_2 sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-AZAWE_X_3 sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-AZAWE_X_4 sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-AZAWE_X_5 sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-IKEY sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-INTPEROFF sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-INTPER sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-INTTO sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-EIGBV sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-POGRU sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-POVER sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-XAKONTO sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-ALKEY sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-CMGRP sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-STRAT sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-CPERS sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-QSSKZ_E sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-QSSKZ_A sy-vline 
WA_VKK_ICDA_DERIVE_OUT_IO_P_STR-PERPOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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