ABAP Select data from SAP table VKKKIPRO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VKKKIPRO
*  INTO TABLE @DATA(IT_VKKKIPRO2).
*--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_VKKKIPRO INDEX 1 INTO DATA(WA_VKKKIPRO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VKKKIPRO>-VTREF = 1.
<VKKKIPRO>-OPBEL = 1.
<VKKKIPRO>-VKTYP = 1.
<VKKKIPRO>-VKONT = 1.
<VKKKIPRO>-ERHOB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VKKKIPRO-VTRST, sy-vline,
  WA_VKKKIPRO-MAHNS, sy-vline,
  WA_VKKKIPRO-EZAWE, sy-vline,
  WA_VKKKIPRO-BLART, sy-vline,
  WA_VKKKIPRO-FAEDN, sy-vline,
  WA_VKKKIPRO-ABRZU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VKKKIPRO 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_VKKKIPRO 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_VKKKIPRO INTO WA_VKKKIPRO.


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

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

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

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VKKKIPRO-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VKKKIPRO-GPART.
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_VKKKIPRO_STR, 
VTREF TYPE STRING,
OPBEL TYPE STRING,
VKTYP TYPE STRING,
VKONT TYPE STRING,
ERHOB TYPE STRING,
VTRST TYPE STRING,
MAHNS TYPE STRING,
EZAWE TYPE STRING,
BLART TYPE STRING,
FAEDN TYPE STRING,
ABRZU TYPE STRING,
ABRZO TYPE STRING,
MAHNV TYPE STRING,
BETRW TYPE STRING,
OPUPZ TYPE STRING,
GPART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VKKKIPRO_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_VKKKIPRO_STR-VTREF sy-vline 
WA_VKKKIPRO_STR-OPBEL sy-vline 
WA_VKKKIPRO_STR-VKTYP sy-vline 
WA_VKKKIPRO_STR-VKONT sy-vline 
WA_VKKKIPRO_STR-ERHOB sy-vline 
WA_VKKKIPRO_STR-VTRST sy-vline 
WA_VKKKIPRO_STR-MAHNS sy-vline 
WA_VKKKIPRO_STR-EZAWE sy-vline 
WA_VKKKIPRO_STR-BLART sy-vline 
WA_VKKKIPRO_STR-FAEDN sy-vline 
WA_VKKKIPRO_STR-ABRZU sy-vline 
WA_VKKKIPRO_STR-ABRZO sy-vline 
WA_VKKKIPRO_STR-MAHNV sy-vline 
WA_VKKKIPRO_STR-BETRW sy-vline 
WA_VKKKIPRO_STR-OPUPZ sy-vline 
WA_VKKKIPRO_STR-GPART sy-vline      INTO ld_text SEPARATED BY SPACE.

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