ABAP Select data from SAP table FKKINVDOC_H_DATA_GFN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKKINVDOC_H_DATA_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_H_DATA_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_H_DATA_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_H_DATA_GFN TYPE STANDARD TABLE OF FKKINVDOC_H_DATA_GFN,
      WA_FKKINVDOC_H_DATA_GFN TYPE FKKINVDOC_H_DATA_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_H_DATA_GFN> TYPE FKKINVDOC_H_DATA_GFN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINVDOC_H_DATA_GFN
*  INTO TABLE @DATA(IT_FKKINVDOC_H_DATA_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_H_DATA_GFN INDEX 1 INTO DATA(WA_FKKINVDOC_H_DATA_GFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINVDOC_H_DATA_GFN>-CAAPPLICATIONAREA = 1.
<FKKINVDOC_H_DATA_GFN>-CAINVCGPROCESS = 1.
<FKKINVDOC_H_DATA_GFN>-CAINVCGTYPE = 1.
<FKKINVDOC_H_DATA_GFN>-CAINVCGCATEGORY = 1.
<FKKINVDOC_H_DATA_GFN>-CAINVCGTECHNICALDOCUMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINVDOC_H_DATA_GFN-CAINVCGTARGETPROCESS, sy-vline,
  WA_FKKINVDOC_H_DATA_GFN-BUSINESSPARTNER, sy-vline,
  WA_FKKINVDOC_H_DATA_GFN-CONTRACTACCOUNT, sy-vline,
  WA_FKKINVDOC_H_DATA_GFN-CAINVCGMASTERDATATYPE, sy-vline,
  WA_FKKINVDOC_H_DATA_GFN-ALTVCONTRACTACCTFORCOLLVBILLS, sy-vline,
  WA_FKKINVDOC_H_DATA_GFN-CASUBSTITUTEDOCUMENTNUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINVDOC_H_DATA_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_H_DATA_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_H_DATA_GFN INTO WA_FKKINVDOC_H_DATA_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 BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINVDOC_H_DATA_GFN-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINVDOC_H_DATA_GFN-BUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit EXBEL, internal->external for field CAOFFICIALDOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_EXBEL_OUTPUT'
  EXPORTING
    input =                      WA_FKKINVDOC_H_DATA_GFN-CAOFFICIALDOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINVDOC_H_DATA_GFN-CAOFFICIALDOCUMENTNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CACONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINVDOC_H_DATA_GFN-CACONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINVDOC_H_DATA_GFN-CACONTRACT.
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_H_DATA_GFN_STR, 
CAAPPLICATIONAREA TYPE STRING,
CAINVCGPROCESS TYPE STRING,
CAINVCGTYPE TYPE STRING,
CAINVCGCATEGORY TYPE STRING,
CAINVCGTECHNICALDOCUMENTTYPE TYPE STRING,
CAINVCGTARGETPROCESS TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CAINVCGMASTERDATATYPE TYPE STRING,
ALTVCONTRACTACCTFORCOLLVBILLS TYPE STRING,
CASUBSTITUTEDOCUMENTNUMBER TYPE STRING,
CREATEDBYUSER TYPE STRING,
CAINVCGCREATIONDATE TYPE STRING,
CAINVCGCREATIONTIME TYPE STRING,
CAINVCGDOCCREATIONMODE TYPE STRING,
CAINVCGNMBROFINVOICINGDOCITEMS TYPE STRING,
CAINVCGDOCINTERNALNUMBER TYPE STRING,
CARECONCILIATIONKEY TYPE STRING,
CAPOSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
CANETDUEDATE TYPE STRING,
CACASHDISCOUNTDUEDATE TYPE STRING,
CACASHDISCOUNTRATE TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CAINVCGISDOCUMENTPOSTED TYPE STRING,
CAINVCGISDOCUMENTSIMULATED TYPE STRING,
CAINVCGISDOCUMENTPRELIMINARY TYPE STRING,
CAINVCGPRELIMINARYCATEGORY TYPE STRING,
CAPRELIMINVCGDOCVALUE TYPE STRING,
CAPRELIMINARYINVCGDOCSTATUS TYPE STRING,
CAINVCGDOCUMENTREVERSALREASON TYPE STRING,
CAINVCGREVERSALDOCUMENT TYPE STRING,
CAINVCGREVERSEDDOCUMENT TYPE STRING,
CAINVCGCORRECTIONCATEGORY TYPE STRING,
CAINVCGDOCUMENTPRINTDATE TYPE STRING,
CAINVCGDOCISLOCKEDFORPRINTING TYPE STRING,
CAPAYMENTMETHOD TYPE STRING,
CAPAYMENTFORMNUMBER TYPE STRING,
CAINVCGDOCFORMID TYPE STRING,
APPLICATIONFORM TYPE STRING,
FORMIDFORATTACHEDPAYMENTMEDIUM TYPE STRING,
CAINVCGDOCUMENTTYPE TYPE STRING,
CAKEYIDENTIFICATION TYPE STRING,
CAOFFICIALDOCUMENTNUMBER TYPE STRING,
CAPARTNERSETTLEMENTRULE TYPE STRING,
COMPANYCODE TYPE STRING,
BUSINESSPLACE TYPE STRING,
CACONTRACT TYPE STRING,
CASUBAPPLICATION TYPE STRING,
CAINVCGBASEDATE TYPE STRING,
CAINVCGDOCPERIODCATEGORY TYPE STRING,
CAINVCGDOCPERIODDATE TYPE STRING,
CAINVCGDOCPERIODSTARTDATE TYPE STRING,
CADUNNINGCOUNTER TYPE STRING,
CAINVCGDOCHASCHARGEORDISCITEMS TYPE STRING,
CAINVCGDOCHASCONTROLDOC TYPE STRING,
CAINVCGBOLLOTAXPOSTSTATUS TYPE STRING,
CAINVCGDOCISPARTOFLIST TYPE STRING,
CAINVCGDOCHASOBJECTRELATION TYPE STRING,
CAINVCGDOCHASSEPAPRENOTIF TYPE STRING,
CAINVCGDOCEXTERNAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINVDOC_H_DATA_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_H_DATA_GFN_STR-CAAPPLICATIONAREA sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGPROCESS sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGTYPE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGCATEGORY sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGTECHNICALDOCUMENTTYPE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGTARGETPROCESS sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-BUSINESSPARTNER sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CONTRACTACCOUNT sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGMASTERDATATYPE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-ALTVCONTRACTACCTFORCOLLVBILLS sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CASUBSTITUTEDOCUMENTNUMBER sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CREATEDBYUSER sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGCREATIONDATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGCREATIONTIME sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCCREATIONMODE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGNMBROFINVOICINGDOCITEMS sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCINTERNALNUMBER sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CARECONCILIATIONKEY sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAPOSTINGDATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-DOCUMENTDATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CANETDUEDATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CACASHDISCOUNTDUEDATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CACASHDISCOUNTRATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-TRANSACTIONCURRENCY sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGISDOCUMENTPOSTED sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGISDOCUMENTSIMULATED sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGISDOCUMENTPRELIMINARY sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGPRELIMINARYCATEGORY sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAPRELIMINVCGDOCVALUE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAPRELIMINARYINVCGDOCSTATUS sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCUMENTREVERSALREASON sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGREVERSALDOCUMENT sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGREVERSEDDOCUMENT sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGCORRECTIONCATEGORY sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCUMENTPRINTDATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCISLOCKEDFORPRINTING sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAPAYMENTMETHOD sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAPAYMENTFORMNUMBER sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCFORMID sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-APPLICATIONFORM sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-FORMIDFORATTACHEDPAYMENTMEDIUM sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCUMENTTYPE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAKEYIDENTIFICATION sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAOFFICIALDOCUMENTNUMBER sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAPARTNERSETTLEMENTRULE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-COMPANYCODE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-BUSINESSPLACE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CACONTRACT sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CASUBAPPLICATION sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGBASEDATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCPERIODCATEGORY sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCPERIODDATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCPERIODSTARTDATE sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CADUNNINGCOUNTER sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCHASCHARGEORDISCITEMS sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCHASCONTROLDOC sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGBOLLOTAXPOSTSTATUS sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCISPARTOFLIST sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCHASOBJECTRELATION sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCHASSEPAPRENOTIF sy-vline 
WA_FKKINVDOC_H_DATA_GFN_STR-CAINVCGDOCEXTERNAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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