ABAP Select data from SAP table VKK_ICDR_PPI_DISPLAY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VKK_ICDR_PPI_DISPLAY 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_ICDR_PPI_DISPLAY. 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_ICDR_PPI_DISPLAY 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_ICDR_PPI_DISPLAY TYPE STANDARD TABLE OF VKK_ICDR_PPI_DISPLAY,
      WA_VKK_ICDR_PPI_DISPLAY TYPE VKK_ICDR_PPI_DISPLAY,
      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_ICDR_PPI_DISPLAY> TYPE VKK_ICDR_PPI_DISPLAY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VKK_ICDR_PPI_DISPLAY
*  INTO TABLE @DATA(IT_VKK_ICDR_PPI_DISPLAY2).
*--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_ICDR_PPI_DISPLAY INDEX 1 INTO DATA(WA_VKK_ICDR_PPI_DISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VKK_ICDR_PPI_DISPLAY>-ICDR_ID = 1.
<VKK_ICDR_PPI_DISPLAY>-ICDR_ITEM_ID = 1.
<VKK_ICDR_PPI_DISPLAY>-VTREF = 1.
<VKK_ICDR_PPI_DISPLAY>-GPART = 1.
<VKK_ICDR_PPI_DISPLAY>-POSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VKK_ICDR_PPI_DISPLAY-SCPOSNR, sy-vline,
  WA_VKK_ICDR_PPI_DISPLAY-OPBEL, sy-vline,
  WA_VKK_ICDR_PPI_DISPLAY-OPUPK, sy-vline,
  WA_VKK_ICDR_PPI_DISPLAY-STORB, sy-vline,
  WA_VKK_ICDR_PPI_DISPLAY-STMET, sy-vline,
  WA_VKK_ICDR_PPI_DISPLAY-BUDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VKK_ICDR_PPI_DISPLAY 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_ICDR_PPI_DISPLAY 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_ICDR_PPI_DISPLAY INTO WA_VKK_ICDR_PPI_DISPLAY.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VKK_ICDR_PPI_DISPLAY-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VKK_ICDR_PPI_DISPLAY-VBUND.
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_ICDR_PPI_DISPLAY_STR, 
ICDR_ID TYPE STRING,
ICDR_ITEM_ID TYPE STRING,
VTREF TYPE STRING,
GPART TYPE STRING,
POSNR TYPE STRING,
SCPOSNR TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
STORB TYPE STRING,
STMET TYPE STRING,
BUDAT TYPE STRING,
BLART TYPE STRING,
CCODE TYPE STRING,
OPCCODE TYPE STRING,
GSBER TYPE STRING,
OPGSBER TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
OPHVORG TYPE STRING,
OPTVORG TYPE STRING,
PYMET TYPE STRING,
PRGRP TYPE STRING,
VSARL_VX TYPE STRING,
VBUND TYPE STRING,
COINS_CODE TYPE STRING,
COINS_CAT TYPE STRING,
STRKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VKK_ICDR_PPI_DISPLAY_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_ICDR_PPI_DISPLAY_STR-ICDR_ID sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-ICDR_ITEM_ID sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-VTREF sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-GPART sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-POSNR sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-SCPOSNR sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-OPBEL sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-OPUPK sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-STORB sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-STMET sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-BUDAT sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-BLART sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-CCODE sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-OPCCODE sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-GSBER sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-OPGSBER sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-HVORG sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-TVORG sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-OPHVORG sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-OPTVORG sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-PYMET sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-PRGRP sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-VSARL_VX sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-VBUND sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-COINS_CODE sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-COINS_CAT sy-vline 
WA_VKK_ICDR_PPI_DISPLAY_STR-STRKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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