ABAP Select data from SAP table VVKK_KF_V020 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VVKK_KF_V020 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 VVKK_KF_V020. 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 VVKK_KF_V020 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_VVKK_KF_V020 TYPE STANDARD TABLE OF VVKK_KF_V020,
      WA_VVKK_KF_V020 TYPE VVKK_KF_V020,
      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: <VVKK_KF_V020> TYPE VVKK_KF_V020.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VVKK_KF_V020.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VVKK_KF_V020
  INTO TABLE IT_VVKK_KF_V020.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VVKK_KF_V020
*  INTO TABLE @DATA(IT_VVKK_KF_V0202).
*--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_VVKK_KF_V020 INDEX 1 INTO DATA(WA_VVKK_KF_V0202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VVKK_KF_V020 ASSIGNING <VVKK_KF_V020>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VVKK_KF_V020>-BUKRS = 1.
<VVKK_KF_V020>-GSBER = 1.
<VVKK_KF_V020>-STRKZ = 1.
<VVKK_KF_V020>-MWSKZ = 1.
<VVKK_KF_V020>-TXJCD = 1.

ENDLOOP.

LOOP AT IT_VVKK_KF_V020 INTO WA_VVKK_KF_V020.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VVKK_KF_V020-TXJCO, sy-vline,
  WA_VVKK_KF_V020-TXCNT, sy-vline,
  WA_VVKK_KF_V020-TXDAT, sy-vline,
  WA_VVKK_KF_V020-TXEXK, sy-vline,
  WA_VVKK_KF_V020-VBUND, sy-vline,
  WA_VVKK_KF_V020-BUGRD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VVKK_KF_V020 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_VVKK_KF_V020 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_VVKK_KF_V020 INTO WA_VVKK_KF_V020.


*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 VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVKK_KF_V020-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVKK_KF_V020-VBUND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVKK_KF_V020-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVKK_KF_V020-HKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VSARL_VX
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVKK_KF_V020-VSARL_VX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVKK_KF_V020-VSARL_VX.
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_VVKK_KF_V020_STR, 
BUKRS TYPE STRING,
GSBER TYPE STRING,
STRKZ TYPE STRING,
MWSKZ TYPE STRING,
TXJCD TYPE STRING,
TXJCO TYPE STRING,
TXCNT TYPE STRING,
TXDAT TYPE STRING,
TXEXK TYPE STRING,
VBUND TYPE STRING,
BUGRD TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
HKONT TYPE STRING,
VSARL_VX TYPE STRING,
LNDSL_VX TYPE STRING,
GSART_VX TYPE STRING,
BSART_VX TYPE STRING,
GZART_VX TYPE STRING,
SDART_VX TYPE STRING,
SJAHR_VX TYPE STRING,
MJAHR_VX TYPE STRING,
RSART_VX TYPE STRING,
FUBER_VX TYPE STRING,
BEBER_VX TYPE STRING,
BSGRP_VX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VVKK_KF_V020_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_VVKK_KF_V020_STR-BUKRS sy-vline 
WA_VVKK_KF_V020_STR-GSBER sy-vline 
WA_VVKK_KF_V020_STR-STRKZ sy-vline 
WA_VVKK_KF_V020_STR-MWSKZ sy-vline 
WA_VVKK_KF_V020_STR-TXJCD sy-vline 
WA_VVKK_KF_V020_STR-TXJCO sy-vline 
WA_VVKK_KF_V020_STR-TXCNT sy-vline 
WA_VVKK_KF_V020_STR-TXDAT sy-vline 
WA_VVKK_KF_V020_STR-TXEXK sy-vline 
WA_VVKK_KF_V020_STR-VBUND sy-vline 
WA_VVKK_KF_V020_STR-BUGRD sy-vline 
WA_VVKK_KF_V020_STR-HVORG sy-vline 
WA_VVKK_KF_V020_STR-TVORG sy-vline 
WA_VVKK_KF_V020_STR-HKONT sy-vline 
WA_VVKK_KF_V020_STR-VSARL_VX sy-vline 
WA_VVKK_KF_V020_STR-LNDSL_VX sy-vline 
WA_VVKK_KF_V020_STR-GSART_VX sy-vline 
WA_VVKK_KF_V020_STR-BSART_VX sy-vline 
WA_VVKK_KF_V020_STR-GZART_VX sy-vline 
WA_VVKK_KF_V020_STR-SDART_VX sy-vline 
WA_VVKK_KF_V020_STR-SJAHR_VX sy-vline 
WA_VVKK_KF_V020_STR-MJAHR_VX sy-vline 
WA_VVKK_KF_V020_STR-RSART_VX sy-vline 
WA_VVKK_KF_V020_STR-FUBER_VX sy-vline 
WA_VVKK_KF_V020_STR-BEBER_VX sy-vline 
WA_VVKK_KF_V020_STR-BSGRP_VX sy-vline      INTO ld_text SEPARATED BY SPACE.

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