ABAP Select data from SAP table FKKINV_INVDOC_ACCASS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINV_INVDOC_ACCASS
*  INTO TABLE @DATA(IT_FKKINV_INVDOC_ACCASS2).
*--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_FKKINV_INVDOC_ACCASS INDEX 1 INTO DATA(WA_FKKINV_INVDOC_ACCASS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINV_INVDOC_ACCASS>-INVDOCNO = 1.
<FKKINV_INVDOC_ACCASS>-INVDOCITEM = 1.
<FKKINV_INVDOC_ACCASS>-SRCDOCCAT = 1.
<FKKINV_INVDOC_ACCASS>-SRCDOCNO = 1.
<FKKINV_INVDOC_ACCASS>-SRCITEMCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINV_INVDOC_ACCASS-SRCDOCITEM, sy-vline,
  WA_FKKINV_INVDOC_ACCASS-OPBEL, sy-vline,
  WA_FKKINV_INVDOC_ACCASS-OPUPK_BPITEM, sy-vline,
  WA_FKKINV_INVDOC_ACCASS-OPUPK, sy-vline,
  WA_FKKINV_INVDOC_ACCASS-OPUPW, sy-vline,
  WA_FKKINV_INVDOC_ACCASS-PSGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINV_INVDOC_ACCASS 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_FKKINV_INVDOC_ACCASS 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_FKKINV_INVDOC_ACCASS INTO WA_FKKINV_INVDOC_ACCASS.


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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FKKINV_INVDOC_ACCASS-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_INVDOC_ACCASS-FIPEX.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field BUDGETYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FKKINV_INVDOC_ACCASS-BUDGETYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_INVDOC_ACCASS-BUDGETYEAR.
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_FKKINV_INVDOC_ACCASS_STR, 
INVDOCNO TYPE STRING,
INVDOCITEM TYPE STRING,
SRCDOCCAT TYPE STRING,
SRCDOCNO TYPE STRING,
SRCITEMCAT TYPE STRING,
SRCDOCITEM TYPE STRING,
OPBEL TYPE STRING,
OPUPK_BPITEM TYPE STRING,
OPUPK TYPE STRING,
OPUPW TYPE STRING,
PSGRP TYPE STRING,
INVGR TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
HKONT TYPE STRING,
SHKZG TYPE STRING,
BETRW TYPE STRING,
BLWAE TYPE STRING,
MWSKZ TYPE STRING,
TAX_INCLUDED TYPE STRING,
STTAX TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
KOSTL TYPE STRING,
PRCTR TYPE STRING,
COPAK TYPE STRING,
PAOBJNR TYPE STRING,
AUFNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
BUPLA TYPE STRING,
VBUND TYPE STRING,
KONTT TYPE STRING,
KONTL TYPE STRING,
FMTYP TYPE STRING,
ORIGFIKRS TYPE STRING,
FIPEX TYPE STRING,
FISTL TYPE STRING,
FONDS TYPE STRING,
FKBER TYPE STRING,
MEASURE TYPE STRING,
GRANT_NBR TYPE STRING,
BUDGETYEAR TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINV_INVDOC_ACCASS_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_FKKINV_INVDOC_ACCASS_STR-INVDOCNO sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-INVDOCITEM sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-SRCDOCCAT sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-SRCDOCNO sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-SRCITEMCAT sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-SRCDOCITEM sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-OPBEL sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-OPUPK_BPITEM sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-OPUPK sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-OPUPW sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-PSGRP sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-INVGR sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-HVORG sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-TVORG sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-HKONT sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-SHKZG sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-BETRW sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-BLWAE sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-MWSKZ sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-TAX_INCLUDED sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-STTAX sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-BUKRS sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-GSBER sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-SEGMENT sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-KOSTL sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-PRCTR sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-COPAK sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-PAOBJNR sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-AUFNR sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-PS_PSP_PNR sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-BUPLA sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-VBUND sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-KONTT sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-KONTL sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-FMTYP sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-ORIGFIKRS sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-FIPEX sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-FISTL sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-FONDS sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-FKBER sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-MEASURE sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-GRANT_NBR sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-BUDGETYEAR sy-vline 
WA_FKKINV_INVDOC_ACCASS_STR-BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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