ABAP Select data from SAP table FKKINVDOC_O_GFN into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINVDOC_O_GFN
*  INTO TABLE @DATA(IT_FKKINVDOC_O_GFN2).
*--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_FKKINVDOC_O_GFN INDEX 1 INTO DATA(WA_FKKINVDOC_O_GFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINVDOC_O_GFN>-CAINVOICINGDOCUMENT = 1.
<FKKINVDOC_O_GFN>-CAINVCGDOCOFFSETTINGITEM = 1.
<FKKINVDOC_O_GFN>-CAINVCGOFFSETTINGREFERENCEKEY = 1.
<FKKINVDOC_O_GFN>-CAINVCGOFFSETTINGCATEGORY = 1.
<FKKINVDOC_O_GFN>-CAINVCGOFFSETTINGPROCEDURE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINVDOC_O_GFN-CAINVCGOFFSETTINGGROUP, sy-vline,
  WA_FKKINVDOC_O_GFN-CAINVCGOFFSETTINGSTATUS, sy-vline,
  WA_FKKINVDOC_O_GFN-CACONTRACT, sy-vline,
  WA_FKKINVDOC_O_GFN-CAPROVIDERCONTRACTITEMNUMBER, sy-vline,
  WA_FKKINVDOC_O_GFN-CASUBAPPLICATION, sy-vline,
  WA_FKKINVDOC_O_GFN-CAINVCGDOCUMENTREQD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINVDOC_O_GFN 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_FKKINVDOC_O_GFN 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_FKKINVDOC_O_GFN INTO WA_FKKINVDOC_O_GFN.


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

*Conversion exit ALPHA, internal->external for field CADOCUMENTNUMBERREQD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINVDOC_O_GFN-CADOCUMENTNUMBERREQD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINVDOC_O_GFN-CADOCUMENTNUMBERREQD.
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_FKKINVDOC_O_GFN_STR, 
CAINVOICINGDOCUMENT TYPE STRING,
CAINVCGDOCOFFSETTINGITEM TYPE STRING,
CAINVCGOFFSETTINGREFERENCEKEY TYPE STRING,
CAINVCGOFFSETTINGCATEGORY TYPE STRING,
CAINVCGOFFSETTINGPROCEDURE TYPE STRING,
CAINVCGOFFSETTINGGROUP TYPE STRING,
CAINVCGOFFSETTINGSTATUS TYPE STRING,
CACONTRACT TYPE STRING,
CAPROVIDERCONTRACTITEMNUMBER TYPE STRING,
CASUBAPPLICATION TYPE STRING,
CAINVCGDOCUMENTREQD TYPE STRING,
CAITEMREQDPERIODSTARTDATE TYPE STRING,
CAITEMREQDPERIODENDDATE TYPE STRING,
CADOCUMENTNUMBERREQD TYPE STRING,
CAREPETITIONITEMNUMBERREQD TYPE STRING,
CABUSINESSPARTNERITEMNMBRREQD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINVDOC_O_GFN_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_FKKINVDOC_O_GFN_STR-CAINVOICINGDOCUMENT sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAINVCGDOCOFFSETTINGITEM sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAINVCGOFFSETTINGREFERENCEKEY sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAINVCGOFFSETTINGCATEGORY sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAINVCGOFFSETTINGPROCEDURE sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAINVCGOFFSETTINGGROUP sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAINVCGOFFSETTINGSTATUS sy-vline 
WA_FKKINVDOC_O_GFN_STR-CACONTRACT sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAPROVIDERCONTRACTITEMNUMBER sy-vline 
WA_FKKINVDOC_O_GFN_STR-CASUBAPPLICATION sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAINVCGDOCUMENTREQD sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAITEMREQDPERIODSTARTDATE sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAITEMREQDPERIODENDDATE sy-vline 
WA_FKKINVDOC_O_GFN_STR-CADOCUMENTNUMBERREQD sy-vline 
WA_FKKINVDOC_O_GFN_STR-CAREPETITIONITEMNUMBERREQD sy-vline 
WA_FKKINVDOC_O_GFN_STR-CABUSINESSPARTNERITEMNMBRREQD sy-vline      INTO ld_text SEPARATED BY SPACE.

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