ABAP Select data from SAP table FKKOPK_NC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKOPK_NC
*  INTO TABLE @DATA(IT_FKKOPK_NC2).
*--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_FKKOPK_NC INDEX 1 INTO DATA(WA_FKKOPK_NC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKOPK_NC>-BUKRS = 1.
<FKKOPK_NC>-HKONT = 1.
<FKKOPK_NC>-GSBER = 1.
<FKKOPK_NC>-PRCTR = 1.
<FKKOPK_NC>-AUFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKOPK_NC-KDAUF, sy-vline,
  WA_FKKOPK_NC-KOSTL, sy-vline,
  WA_FKKOPK_NC-FDLEV, sy-vline,
  WA_FKKOPK_NC-KURSF, sy-vline,
  WA_FKKOPK_NC-BETRH, sy-vline,
  WA_FKKOPK_NC-BETRW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKOPK_NC 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_FKKOPK_NC 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_FKKOPK_NC INTO WA_FKKOPK_NC.


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

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

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

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

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

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_FKKOPK_NC-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOPK_NC-KURSF.
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_FKKOPK_NC_STR, 
BUKRS TYPE STRING,
HKONT TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
AUFNR TYPE STRING,
KDAUF TYPE STRING,
KOSTL TYPE STRING,
FDLEV TYPE STRING,
KURSF TYPE STRING,
BETRH TYPE STRING,
BETRW TYPE STRING,
BETR2 TYPE STRING,
BETR3 TYPE STRING,
MWSKZ TYPE STRING,
STPRZ TYPE STRING,
SBASH TYPE STRING,
SBASW TYPE STRING,
TXJCO TYPE STRING,
TXDAT TYPE STRING,
KONTT TYPE STRING,
KONTL TYPE STRING,
PSWSL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKOPK_NC_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_FKKOPK_NC_STR-BUKRS sy-vline 
WA_FKKOPK_NC_STR-HKONT sy-vline 
WA_FKKOPK_NC_STR-GSBER sy-vline 
WA_FKKOPK_NC_STR-PRCTR sy-vline 
WA_FKKOPK_NC_STR-AUFNR sy-vline 
WA_FKKOPK_NC_STR-KDAUF sy-vline 
WA_FKKOPK_NC_STR-KOSTL sy-vline 
WA_FKKOPK_NC_STR-FDLEV sy-vline 
WA_FKKOPK_NC_STR-KURSF sy-vline 
WA_FKKOPK_NC_STR-BETRH sy-vline 
WA_FKKOPK_NC_STR-BETRW sy-vline 
WA_FKKOPK_NC_STR-BETR2 sy-vline 
WA_FKKOPK_NC_STR-BETR3 sy-vline 
WA_FKKOPK_NC_STR-MWSKZ sy-vline 
WA_FKKOPK_NC_STR-STPRZ sy-vline 
WA_FKKOPK_NC_STR-SBASH sy-vline 
WA_FKKOPK_NC_STR-SBASW sy-vline 
WA_FKKOPK_NC_STR-TXJCO sy-vline 
WA_FKKOPK_NC_STR-TXDAT sy-vline 
WA_FKKOPK_NC_STR-KONTT sy-vline 
WA_FKKOPK_NC_STR-KONTL sy-vline 
WA_FKKOPK_NC_STR-PSWSL sy-vline      INTO ld_text SEPARATED BY SPACE.

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