ABAP Select data from SAP table VVZZKOP2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VVZZKOP2 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 VVZZKOP2. 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 VVZZKOP2 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_VVZZKOP2 TYPE STANDARD TABLE OF VVZZKOP2,
      WA_VVZZKOP2 TYPE VVZZKOP2,
      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: <VVZZKOP2> TYPE VVZZKOP2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VVZZKOP2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VVZZKOP2
  INTO TABLE IT_VVZZKOP2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VVZZKOP2
*  INTO TABLE @DATA(IT_VVZZKOP22).
*--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_VVZZKOP2 INDEX 1 INTO DATA(WA_VVZZKOP22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VVZZKOP2 ASSIGNING <VVZZKOP2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VVZZKOP2>-MANDT = 1.
<VVZZKOP2>-BUKRS = 1.
<VVZZKOP2>-SANLF = 1.
<VVZZKOP2>-RKEY1 = 1.
<VVZZKOP2>-RKEY2 = 1.

ENDLOOP.

LOOP AT IT_VVZZKOP2 INTO WA_VVZZKOP2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VVZZKOP2-RKEY3, sy-vline,
  WA_VVZZKOP2-DGUEL_KK, sy-vline,
  WA_VVZZKOP2-NLFD_ANG, sy-vline,
  WA_VVZZKOP2-SKOART, sy-vline,
  WA_VVZZKOP2-DGUEL_KP, sy-vline,
  WA_VVZZKOP2-NSTUFE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VVZZKOP2 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_VVZZKOP2 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_VVZZKOP2 INTO WA_VVZZKOP2.


*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 KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVZZKOP2-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVZZKOP2-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SPARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVZZKOP2-SPARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVZZKOP2-SPARTNR.
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_VVZZKOP2_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
SANLF TYPE STRING,
RKEY1 TYPE STRING,
RKEY2 TYPE STRING,
RKEY3 TYPE STRING,
DGUEL_KK TYPE STRING,
NLFD_ANG TYPE STRING,
SKOART TYPE STRING,
DGUEL_KP TYPE STRING,
NSTUFE TYPE STRING,
SSTATI TYPE STRING,
PKOND TYPE STRING,
BKOND TYPE STRING,
SWHRKOND TYPE STRING,
SBASIS TYPE STRING,
SZSREF TYPE STRING,
SZSREFVZ TYPE STRING,
AMMRHY TYPE STRING,
ATTRHY TYPE STRING,
SZAWS TYPE STRING,
RDIVNR TYPE STRING,
JNULLKON TYPE STRING,
MWSKZ TYPE STRING,
JBMONAT TYPE STRING,
DVALUT TYPE STRING,
DFAELL TYPE STRING,
KUNNR TYPE STRING,
ZLSCH TYPE STRING,
BVTYP TYPE STRING,
MABER TYPE STRING,
SPARTNR TYPE STRING,
RKONT TYPE STRING,
SVULT TYPE STRING,
SFULT TYPE STRING,
SVKALRI TYPE STRING,
SFKALRI TYPE STRING,
AVGSTAGE TYPE STRING,
AFGSTAGE TYPE STRING,
SVKALZUS TYPE STRING,
SFKALZUS TYPE STRING,
SKALID TYPE STRING,
SZBMETH TYPE STRING,
JSOFVERR TYPE STRING,
DALLGEM TYPE STRING,
SZEGEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VVZZKOP2_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_VVZZKOP2_STR-MANDT sy-vline 
WA_VVZZKOP2_STR-BUKRS sy-vline 
WA_VVZZKOP2_STR-SANLF sy-vline 
WA_VVZZKOP2_STR-RKEY1 sy-vline 
WA_VVZZKOP2_STR-RKEY2 sy-vline 
WA_VVZZKOP2_STR-RKEY3 sy-vline 
WA_VVZZKOP2_STR-DGUEL_KK sy-vline 
WA_VVZZKOP2_STR-NLFD_ANG sy-vline 
WA_VVZZKOP2_STR-SKOART sy-vline 
WA_VVZZKOP2_STR-DGUEL_KP sy-vline 
WA_VVZZKOP2_STR-NSTUFE sy-vline 
WA_VVZZKOP2_STR-SSTATI sy-vline 
WA_VVZZKOP2_STR-PKOND sy-vline 
WA_VVZZKOP2_STR-BKOND sy-vline 
WA_VVZZKOP2_STR-SWHRKOND sy-vline 
WA_VVZZKOP2_STR-SBASIS sy-vline 
WA_VVZZKOP2_STR-SZSREF sy-vline 
WA_VVZZKOP2_STR-SZSREFVZ sy-vline 
WA_VVZZKOP2_STR-AMMRHY sy-vline 
WA_VVZZKOP2_STR-ATTRHY sy-vline 
WA_VVZZKOP2_STR-SZAWS sy-vline 
WA_VVZZKOP2_STR-RDIVNR sy-vline 
WA_VVZZKOP2_STR-JNULLKON sy-vline 
WA_VVZZKOP2_STR-MWSKZ sy-vline 
WA_VVZZKOP2_STR-JBMONAT sy-vline 
WA_VVZZKOP2_STR-DVALUT sy-vline 
WA_VVZZKOP2_STR-DFAELL sy-vline 
WA_VVZZKOP2_STR-KUNNR sy-vline 
WA_VVZZKOP2_STR-ZLSCH sy-vline 
WA_VVZZKOP2_STR-BVTYP sy-vline 
WA_VVZZKOP2_STR-MABER sy-vline 
WA_VVZZKOP2_STR-SPARTNR sy-vline 
WA_VVZZKOP2_STR-RKONT sy-vline 
WA_VVZZKOP2_STR-SVULT sy-vline 
WA_VVZZKOP2_STR-SFULT sy-vline 
WA_VVZZKOP2_STR-SVKALRI sy-vline 
WA_VVZZKOP2_STR-SFKALRI sy-vline 
WA_VVZZKOP2_STR-AVGSTAGE sy-vline 
WA_VVZZKOP2_STR-AFGSTAGE sy-vline 
WA_VVZZKOP2_STR-SVKALZUS sy-vline 
WA_VVZZKOP2_STR-SFKALZUS sy-vline 
WA_VVZZKOP2_STR-SKALID sy-vline 
WA_VVZZKOP2_STR-SZBMETH sy-vline 
WA_VVZZKOP2_STR-JSOFVERR sy-vline 
WA_VVZZKOP2_STR-DALLGEM sy-vline 
WA_VVZZKOP2_STR-SZEGEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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