ABAP Select data from SAP table VDFKKVK_CORR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VDFKKVK_CORR
*  INTO TABLE @DATA(IT_VDFKKVK_CORR2).
*--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_VDFKKVK_CORR INDEX 1 INTO DATA(WA_VDFKKVK_CORR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VDFKKVK_CORR>-MANDT = 1.
<VDFKKVK_CORR>-VKONT = 1.
<VDFKKVK_CORR>-GPART = 1.
<VDFKKVK_CORR>-IDENTNUMBER = 1.
<VDFKKVK_CORR>-ADRNR_CORR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VDFKKVK_CORR-XADDR_SET, sy-vline,
  WA_VDFKKVK_CORR-COTYP, sy-vline,
  WA_VDFKKVK_CORR-CORR_ROLE, sy-vline,
  WA_VDFKKVK_CORR-RECEIVER, sy-vline,
  WA_VDFKKVK_CORR-SUBSTITUTE, sy-vline,
  WA_VDFKKVK_CORR-IND_RECEIV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VDFKKVK_CORR 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_VDFKKVK_CORR 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_VDFKKVK_CORR INTO WA_VDFKKVK_CORR.


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

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

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

*Conversion exit ALPHA, internal->external for field RECEIVER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VDFKKVK_CORR-RECEIVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VDFKKVK_CORR-RECEIVER.
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_VDFKKVK_CORR_STR, 
MANDT TYPE STRING,
VKONT TYPE STRING,
GPART TYPE STRING,
IDENTNUMBER TYPE STRING,
ADRNR_CORR TYPE STRING,
XADDR_SET TYPE STRING,
COTYP TYPE STRING,
CORR_ROLE TYPE STRING,
RECEIVER TYPE STRING,
SUBSTITUTE TYPE STRING,
IND_RECEIV TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VDFKKVK_CORR_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_VDFKKVK_CORR_STR-MANDT sy-vline 
WA_VDFKKVK_CORR_STR-VKONT sy-vline 
WA_VDFKKVK_CORR_STR-GPART sy-vline 
WA_VDFKKVK_CORR_STR-IDENTNUMBER sy-vline 
WA_VDFKKVK_CORR_STR-ADRNR_CORR sy-vline 
WA_VDFKKVK_CORR_STR-XADDR_SET sy-vline 
WA_VDFKKVK_CORR_STR-COTYP sy-vline 
WA_VDFKKVK_CORR_STR-CORR_ROLE sy-vline 
WA_VDFKKVK_CORR_STR-RECEIVER sy-vline 
WA_VDFKKVK_CORR_STR-SUBSTITUTE sy-vline 
WA_VDFKKVK_CORR_STR-IND_RECEIV sy-vline 
WA_VDFKKVK_CORR_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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