ABAP Select data from SAP table VZZKOPA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VZZKOPA
*  INTO TABLE @DATA(IT_VZZKOPA2).
*--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_VZZKOPA INDEX 1 INTO DATA(WA_VZZKOPA2).


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

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

ENDLOOP.

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

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


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_VZZKOPA_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,
SFORMREF TYPE STRING,
SVARNAME TYPE STRING,
PKOND TYPE STRING,
SZSREF TYPE STRING,
PFLUCT TYPE STRING,
SKALID TYPE STRING,
SKALID2 TYPE STRING,
BROUNDUNIT TYPE STRING,
SROUND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VZZKOPA_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_VZZKOPA_STR-MANDT sy-vline 
WA_VZZKOPA_STR-BUKRS sy-vline 
WA_VZZKOPA_STR-SANLF sy-vline 
WA_VZZKOPA_STR-RKEY1 sy-vline 
WA_VZZKOPA_STR-RKEY2 sy-vline 
WA_VZZKOPA_STR-RKEY3 sy-vline 
WA_VZZKOPA_STR-DGUEL_KK sy-vline 
WA_VZZKOPA_STR-NLFD_ANG sy-vline 
WA_VZZKOPA_STR-SKOART sy-vline 
WA_VZZKOPA_STR-DGUEL_KP sy-vline 
WA_VZZKOPA_STR-NSTUFE sy-vline 
WA_VZZKOPA_STR-SFORMREF sy-vline 
WA_VZZKOPA_STR-SVARNAME sy-vline 
WA_VZZKOPA_STR-PKOND sy-vline 
WA_VZZKOPA_STR-SZSREF sy-vline 
WA_VZZKOPA_STR-PFLUCT sy-vline 
WA_VZZKOPA_STR-SKALID sy-vline 
WA_VZZKOPA_STR-SKALID2 sy-vline 
WA_VZZKOPA_STR-BROUNDUNIT sy-vline 
WA_VZZKOPA_STR-SROUND sy-vline      INTO ld_text SEPARATED BY SPACE.

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