ABAP Select data from SAP table VVKKCFCSTEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VVKKCFCSTEL
*  INTO TABLE @DATA(IT_VVKKCFCSTEL2).
*--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_VVKKCFCSTEL INDEX 1 INTO DATA(WA_VVKKCFCSTEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VVKKCFCSTEL>-MANDT = 1.
<VVKKCFCSTEL>-VKONT = 1.
<VVKKCFCSTEL>-GPART = 1.
<VVKKCFCSTEL>-LAUFI = 1.
<VVKKCFCSTEL>-LAUFD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VVKKCFCSTEL-MAZAE, sy-vline,
  WA_VVKKCFCSTEL-VTREF, sy-vline,
  WA_VVKKCFCSTEL-OPBUK, sy-vline,
  WA_VVKKCFCSTEL-STATUS, sy-vline,
  WA_VVKKCFCSTEL-WAERS, sy-vline,
  WA_VVKKCFCSTEL-MSALM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VVKKCFCSTEL 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_VVKKCFCSTEL 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_VVKKCFCSTEL INTO WA_VVKKCFCSTEL.


*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_VVKKCFCSTEL-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVKKCFCSTEL-VKONT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVKKCFCSTEL-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVKKCFCSTEL-VTREF.
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_VVKKCFCSTEL_STR, 
MANDT TYPE STRING,
VKONT TYPE STRING,
GPART TYPE STRING,
LAUFI TYPE STRING,
LAUFD TYPE STRING,
MAZAE TYPE STRING,
VTREF TYPE STRING,
OPBUK TYPE STRING,
STATUS TYPE STRING,
WAERS TYPE STRING,
MSALM TYPE STRING,
MDRKD TYPE STRING,
XCALL1 TYPE STRING,
XCALL2 TYPE STRING,
XCALL3 TYPE STRING,
XPAYM TYPE STRING,
STATE TYPE STRING,
LOCK_USER TYPE STRING,
LOCK_LIMIT TYPE STRING,
WORKSTATE TYPE STRING,
RESUBMIT_DATE TYPE STRING,
WF_COUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VVKKCFCSTEL_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_VVKKCFCSTEL_STR-MANDT sy-vline 
WA_VVKKCFCSTEL_STR-VKONT sy-vline 
WA_VVKKCFCSTEL_STR-GPART sy-vline 
WA_VVKKCFCSTEL_STR-LAUFI sy-vline 
WA_VVKKCFCSTEL_STR-LAUFD sy-vline 
WA_VVKKCFCSTEL_STR-MAZAE sy-vline 
WA_VVKKCFCSTEL_STR-VTREF sy-vline 
WA_VVKKCFCSTEL_STR-OPBUK sy-vline 
WA_VVKKCFCSTEL_STR-STATUS sy-vline 
WA_VVKKCFCSTEL_STR-WAERS sy-vline 
WA_VVKKCFCSTEL_STR-MSALM sy-vline 
WA_VVKKCFCSTEL_STR-MDRKD sy-vline 
WA_VVKKCFCSTEL_STR-XCALL1 sy-vline 
WA_VVKKCFCSTEL_STR-XCALL2 sy-vline 
WA_VVKKCFCSTEL_STR-XCALL3 sy-vline 
WA_VVKKCFCSTEL_STR-XPAYM sy-vline 
WA_VVKKCFCSTEL_STR-STATE sy-vline 
WA_VVKKCFCSTEL_STR-LOCK_USER sy-vline 
WA_VVKKCFCSTEL_STR-LOCK_LIMIT sy-vline 
WA_VVKKCFCSTEL_STR-WORKSTATE sy-vline 
WA_VVKKCFCSTEL_STR-RESUBMIT_DATE sy-vline 
WA_VVKKCFCSTEL_STR-WF_COUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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