ABAP Select data from SAP table FKKOPI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKOPI
*  INTO TABLE @DATA(IT_FKKOPI2).
*--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_FKKOPI INDEX 1 INTO DATA(WA_FKKOPI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKOPI>-MANDT = 1.
<FKKOPI>-OPBEL = 1.
<FKKOPI>-OPUPK = 1.
<FKKOPI>-BUKRS = 1.
<FKKOPI>-GSBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKOPI-SEGMENT, sy-vline,
  WA_FKKOPI-PRCTR, sy-vline,
  WA_FKKOPI-GPART, sy-vline,
  WA_FKKOPI-VTREF, sy-vline,
  WA_FKKOPI-SUBAP, sy-vline,
  WA_FKKOPI-VTRE2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKOPI 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_FKKOPI 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_FKKOPI INTO WA_FKKOPI.


*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_FKKOPI-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOPI-OPBEL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field VTRE2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKOPI-VTRE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOPI-VTRE2.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKOPI-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOPI-HKONT.
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_FKKOPI_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
GPART TYPE STRING,
VTREF TYPE STRING,
SUBAP TYPE STRING,
VTRE2 TYPE STRING,
VKONT TYPE STRING,
APPLK TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
KOFIZ TYPE STRING,
SPART TYPE STRING,
HKONT TYPE STRING,
MWSKZ TYPE STRING,
STAKZ TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
OPTXT TYPE STRING,
WAERS TYPE STRING,
FAEDN TYPE STRING,
BETRW TYPE STRING,
XMANL TYPE STRING,
SPZAH TYPE STRING,
XEIPH TYPE STRING,
MANSP TYPE STRING,
SPERZ TYPE STRING,
BLART TYPE STRING,
PSTBL TYPE STRING,
IOPUPK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKOPI_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_FKKOPI_STR-MANDT sy-vline 
WA_FKKOPI_STR-OPBEL sy-vline 
WA_FKKOPI_STR-OPUPK sy-vline 
WA_FKKOPI_STR-BUKRS sy-vline 
WA_FKKOPI_STR-GSBER sy-vline 
WA_FKKOPI_STR-SEGMENT sy-vline 
WA_FKKOPI_STR-PRCTR sy-vline 
WA_FKKOPI_STR-GPART sy-vline 
WA_FKKOPI_STR-VTREF sy-vline 
WA_FKKOPI_STR-SUBAP sy-vline 
WA_FKKOPI_STR-VTRE2 sy-vline 
WA_FKKOPI_STR-VKONT sy-vline 
WA_FKKOPI_STR-APPLK sy-vline 
WA_FKKOPI_STR-HVORG sy-vline 
WA_FKKOPI_STR-TVORG sy-vline 
WA_FKKOPI_STR-KOFIZ sy-vline 
WA_FKKOPI_STR-SPART sy-vline 
WA_FKKOPI_STR-HKONT sy-vline 
WA_FKKOPI_STR-MWSKZ sy-vline 
WA_FKKOPI_STR-STAKZ sy-vline 
WA_FKKOPI_STR-BLDAT sy-vline 
WA_FKKOPI_STR-BUDAT sy-vline 
WA_FKKOPI_STR-OPTXT sy-vline 
WA_FKKOPI_STR-WAERS sy-vline 
WA_FKKOPI_STR-FAEDN sy-vline 
WA_FKKOPI_STR-BETRW sy-vline 
WA_FKKOPI_STR-XMANL sy-vline 
WA_FKKOPI_STR-SPZAH sy-vline 
WA_FKKOPI_STR-XEIPH sy-vline 
WA_FKKOPI_STR-MANSP sy-vline 
WA_FKKOPI_STR-SPERZ sy-vline 
WA_FKKOPI_STR-BLART sy-vline 
WA_FKKOPI_STR-PSTBL sy-vline 
WA_FKKOPI_STR-IOPUPK sy-vline      INTO ld_text SEPARATED BY SPACE.

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