ABAP Select data from SAP table CKML_S_NDEF_VVERS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKML_S_NDEF_VVERS
*  INTO TABLE @DATA(IT_CKML_S_NDEF_VVERS2).
*--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_CKML_S_NDEF_VVERS INDEX 1 INTO DATA(WA_CKML_S_NDEF_VVERS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKML_S_NDEF_VVERS>-PWERK = 1.
<CKML_S_NDEF_VVERS>-PMATN = 1.
<CKML_S_NDEF_VVERS>-KOSTL = 1.
<CKML_S_NDEF_VVERS>-KDAUF = 1.
<CKML_S_NDEF_VVERS>-KDPOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKML_S_NDEF_VVERS-KUNDE, sy-vline,
  WA_CKML_S_NDEF_VVERS-PSPNR, sy-vline,
  WA_CKML_S_NDEF_VVERS-KSTRG, sy-vline,
  WA_CKML_S_NDEF_VVERS-SAKNR, sy-vline,
  WA_CKML_S_NDEF_VVERS-OBJNR, sy-vline,
  WA_CKML_S_NDEF_VVERS-PRCTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKML_S_NDEF_VVERS 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_CKML_S_NDEF_VVERS 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_CKML_S_NDEF_VVERS INTO WA_CKML_S_NDEF_VVERS.


*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 MATN1, internal->external for field PMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CKML_S_NDEF_VVERS-PMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_S_NDEF_VVERS-PMATN.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CKML_S_NDEF_VVERS-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_S_NDEF_VVERS-PSPNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKML_S_NDEF_VVERS-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_S_NDEF_VVERS-VBUND.
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_CKML_S_NDEF_VVERS_STR, 
PWERK TYPE STRING,
PMATN TYPE STRING,
KOSTL TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
KUNDE TYPE STRING,
PSPNR TYPE STRING,
KSTRG TYPE STRING,
SAKNR TYPE STRING,
OBJNR TYPE STRING,
PRCTR TYPE STRING,
GSBER TYPE STRING,
BUKRS TYPE STRING,
VBUND TYPE STRING,
SPEZ_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKML_S_NDEF_VVERS_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_CKML_S_NDEF_VVERS_STR-PWERK sy-vline 
WA_CKML_S_NDEF_VVERS_STR-PMATN sy-vline 
WA_CKML_S_NDEF_VVERS_STR-KOSTL sy-vline 
WA_CKML_S_NDEF_VVERS_STR-KDAUF sy-vline 
WA_CKML_S_NDEF_VVERS_STR-KDPOS sy-vline 
WA_CKML_S_NDEF_VVERS_STR-KUNDE sy-vline 
WA_CKML_S_NDEF_VVERS_STR-PSPNR sy-vline 
WA_CKML_S_NDEF_VVERS_STR-KSTRG sy-vline 
WA_CKML_S_NDEF_VVERS_STR-SAKNR sy-vline 
WA_CKML_S_NDEF_VVERS_STR-OBJNR sy-vline 
WA_CKML_S_NDEF_VVERS_STR-PRCTR sy-vline 
WA_CKML_S_NDEF_VVERS_STR-GSBER sy-vline 
WA_CKML_S_NDEF_VVERS_STR-BUKRS sy-vline 
WA_CKML_S_NDEF_VVERS_STR-VBUND sy-vline 
WA_CKML_S_NDEF_VVERS_STR-SPEZ_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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