ABAP Select data from SAP table FKKINV_POSTACC_ASSIGN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKKINV_POSTACC_ASSIGN 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_POSTACC_ASSIGN. 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_POSTACC_ASSIGN 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_POSTACC_ASSIGN TYPE STANDARD TABLE OF FKKINV_POSTACC_ASSIGN,
      WA_FKKINV_POSTACC_ASSIGN TYPE FKKINV_POSTACC_ASSIGN,
      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_POSTACC_ASSIGN> TYPE FKKINV_POSTACC_ASSIGN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINV_POSTACC_ASSIGN
*  INTO TABLE @DATA(IT_FKKINV_POSTACC_ASSIGN2).
*--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_POSTACC_ASSIGN INDEX 1 INTO DATA(WA_FKKINV_POSTACC_ASSIGN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINV_POSTACC_ASSIGN>-HKONT = 1.
<FKKINV_POSTACC_ASSIGN>-HKONT_BPITEM = 1.
<FKKINV_POSTACC_ASSIGN>-GSBER = 1.
<FKKINV_POSTACC_ASSIGN>-SEGMENT = 1.
<FKKINV_POSTACC_ASSIGN>-PRCTR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINV_POSTACC_ASSIGN-PRCTR_BPITEM, sy-vline,
  WA_FKKINV_POSTACC_ASSIGN-COPAK, sy-vline,
  WA_FKKINV_POSTACC_ASSIGN-PAOBJNR, sy-vline,
  WA_FKKINV_POSTACC_ASSIGN-AUFNR, sy-vline,
  WA_FKKINV_POSTACC_ASSIGN-AUFNR_BPITEM, sy-vline,
  WA_FKKINV_POSTACC_ASSIGN-PS_PSP_PNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINV_POSTACC_ASSIGN 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_POSTACC_ASSIGN 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_POSTACC_ASSIGN INTO WA_FKKINV_POSTACC_ASSIGN.


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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINV_POSTACC_ASSIGN-KBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_POSTACC_ASSIGN-KBLNR.
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_POSTACC_ASSIGN_STR, 
HKONT TYPE STRING,
HKONT_BPITEM TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
PRCTR_BPITEM TYPE STRING,
COPAK TYPE STRING,
PAOBJNR TYPE STRING,
AUFNR TYPE STRING,
AUFNR_BPITEM TYPE STRING,
PS_PSP_PNR TYPE STRING,
PS_PSP_PNR_BPITEM TYPE STRING,
KOSTL TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
BUPLA TYPE STRING,
VBUND TYPE STRING,
KONTT TYPE STRING,
KONTL TYPE STRING,
PERSL TYPE STRING,
FINRE 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,
KBLNR TYPE STRING,
KBLPOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINV_POSTACC_ASSIGN_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_POSTACC_ASSIGN_STR-HKONT sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-HKONT_BPITEM sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-GSBER sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-SEGMENT sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-PRCTR sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-PRCTR_BPITEM sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-COPAK sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-PAOBJNR sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-AUFNR sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-AUFNR_BPITEM sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-PS_PSP_PNR sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-PS_PSP_PNR_BPITEM sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-KOSTL sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-KDAUF sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-KDPOS sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-BUPLA sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-VBUND sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-KONTT sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-KONTL sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-PERSL sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-FINRE sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-FMTYP sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-ORIGFIKRS sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-FIPEX sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-FISTL sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-FONDS sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-FKBER sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-MEASURE sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-GRANT_NBR sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-BUDGETYEAR sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-BUDGET_PD sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-KBLNR sy-vline 
WA_FKKINV_POSTACC_ASSIGN_STR-KBLPOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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