ABAP Select data from SAP table V_FKKCO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_FKKCO
*  INTO TABLE @DATA(IT_V_FKKCO2).
*--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_V_FKKCO INDEX 1 INTO DATA(WA_V_FKKCO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_FKKCO>-MANDT = 1.
<V_FKKCO>-OPBEL = 1.
<V_FKKCO>-OPUPK = 1.
<V_FKKCO>-FIKEY = 1.
<V_FKKCO>-XCOPA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_FKKCO-PAOBJNR, sy-vline,
  WA_V_FKKCO-PASUBNR, sy-vline,
  WA_V_FKKCO-BUKRS, sy-vline,
  WA_V_FKKCO-HKONT, sy-vline,
  WA_V_FKKCO-BUDAT, sy-vline,
  WA_V_FKKCO-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_FKKCO 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_V_FKKCO 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_V_FKKCO INTO WA_V_FKKCO.


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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_FKKCO-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_FKKCO-MEINS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_FKKCO-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_FKKCO-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_V_FKKCO_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
FIKEY TYPE STRING,
XCOPA TYPE STRING,
PAOBJNR TYPE STRING,
PASUBNR TYPE STRING,
BUKRS TYPE STRING,
HKONT TYPE STRING,
BUDAT TYPE STRING,
WAERS TYPE STRING,
BLDAT TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
KOSTL TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
AUFNR TYPE STRING,
BETRH TYPE STRING,
BETRW TYPE STRING,
BETR2 TYPE STRING,
BETR3 TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
WHGRP TYPE STRING,
PS_PSP_PNR TYPE STRING,
SEGMENT TYPE STRING,
VBUND TYPE STRING,
LDGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_FKKCO_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_V_FKKCO_STR-MANDT sy-vline 
WA_V_FKKCO_STR-OPBEL sy-vline 
WA_V_FKKCO_STR-OPUPK sy-vline 
WA_V_FKKCO_STR-FIKEY sy-vline 
WA_V_FKKCO_STR-XCOPA sy-vline 
WA_V_FKKCO_STR-PAOBJNR sy-vline 
WA_V_FKKCO_STR-PASUBNR sy-vline 
WA_V_FKKCO_STR-BUKRS sy-vline 
WA_V_FKKCO_STR-HKONT sy-vline 
WA_V_FKKCO_STR-BUDAT sy-vline 
WA_V_FKKCO_STR-WAERS sy-vline 
WA_V_FKKCO_STR-BLDAT sy-vline 
WA_V_FKKCO_STR-GSBER sy-vline 
WA_V_FKKCO_STR-PRCTR sy-vline 
WA_V_FKKCO_STR-KOSTL sy-vline 
WA_V_FKKCO_STR-KDAUF sy-vline 
WA_V_FKKCO_STR-KDPOS sy-vline 
WA_V_FKKCO_STR-AUFNR sy-vline 
WA_V_FKKCO_STR-BETRH sy-vline 
WA_V_FKKCO_STR-BETRW sy-vline 
WA_V_FKKCO_STR-BETR2 sy-vline 
WA_V_FKKCO_STR-BETR3 sy-vline 
WA_V_FKKCO_STR-MENGE sy-vline 
WA_V_FKKCO_STR-MEINS sy-vline 
WA_V_FKKCO_STR-WHGRP sy-vline 
WA_V_FKKCO_STR-PS_PSP_PNR sy-vline 
WA_V_FKKCO_STR-SEGMENT sy-vline 
WA_V_FKKCO_STR-VBUND sy-vline 
WA_V_FKKCO_STR-LDGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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