ABAP Select data from SAP table FIAPPL_S_INV_BSEG_EXTRACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIAPPL_S_INV_BSEG_EXTRACT
*  INTO TABLE @DATA(IT_FIAPPL_S_INV_BSEG_EXTRACT2).
*--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_FIAPPL_S_INV_BSEG_EXTRACT INDEX 1 INTO DATA(WA_FIAPPL_S_INV_BSEG_EXTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIAPPL_S_INV_BSEG_EXTRACT>-MANDT = 1.
<FIAPPL_S_INV_BSEG_EXTRACT>-BUKRS = 1.
<FIAPPL_S_INV_BSEG_EXTRACT>-BELNR = 1.
<FIAPPL_S_INV_BSEG_EXTRACT>-AUGBL = 1.
<FIAPPL_S_INV_BSEG_EXTRACT>-GJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIAPPL_S_INV_BSEG_EXTRACT-LIFNR, sy-vline,
  WA_FIAPPL_S_INV_BSEG_EXTRACT-KUNNR, sy-vline,
  WA_FIAPPL_S_INV_BSEG_EXTRACT-HKONT, sy-vline,
  WA_FIAPPL_S_INV_BSEG_EXTRACT-KOART, sy-vline,
  WA_FIAPPL_S_INV_BSEG_EXTRACT-SHKZG, sy-vline,
  WA_FIAPPL_S_INV_BSEG_EXTRACT-BUZEI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIAPPL_S_INV_BSEG_EXTRACT 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_FIAPPL_S_INV_BSEG_EXTRACT 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_FIAPPL_S_INV_BSEG_EXTRACT INTO WA_FIAPPL_S_INV_BSEG_EXTRACT.


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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FIAPPL_S_INV_BSEG_EXTRACT-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAPPL_S_INV_BSEG_EXTRACT-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FIAPPL_S_INV_BSEG_EXTRACT-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAPPL_S_INV_BSEG_EXTRACT-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FIAPPL_S_INV_BSEG_EXTRACT-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAPPL_S_INV_BSEG_EXTRACT-WRBTR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit AU132, internal->external for field WSKTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FIAPPL_S_INV_BSEG_EXTRACT-WSKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAPPL_S_INV_BSEG_EXTRACT-WSKTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIAPPL_S_INV_BSEG_EXTRACT-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAPPL_S_INV_BSEG_EXTRACT-VBUND.
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_FIAPPL_S_INV_BSEG_EXTRACT_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
AUGBL TYPE STRING,
GJAHR TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
HKONT TYPE STRING,
KOART TYPE STRING,
SHKZG TYPE STRING,
BUZEI TYPE STRING,
ZFBDT TYPE STRING,
AUGDT TYPE STRING,
ZTERM TYPE STRING,
ZBD1T TYPE STRING,
ZBD2T TYPE STRING,
ZBD3T TYPE STRING,
DMBTR TYPE STRING,
BSCHL TYPE STRING,
UMSKS TYPE STRING,
WRBTR TYPE STRING,
WAERS TYPE STRING,
REBZG TYPE STRING,
REBZT TYPE STRING,
WSKTO TYPE STRING,
ZBD1P TYPE STRING,
ZBD2P TYPE STRING,
SGTXT TYPE STRING,
GSBER TYPE STRING,
VBUND TYPE STRING,
ZUONR TYPE STRING,
XREF1 TYPE STRING,
XREF2 TYPE STRING,
XREF3 TYPE STRING,
MWSKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIAPPL_S_INV_BSEG_EXTRACT_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_FIAPPL_S_INV_BSEG_EXTRACT_STR-MANDT sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-BUKRS sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-BELNR sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-AUGBL sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-GJAHR sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-LIFNR sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-KUNNR sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-HKONT sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-KOART sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-SHKZG sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-BUZEI sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-ZFBDT sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-AUGDT sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-ZTERM sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-ZBD1T sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-ZBD2T sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-ZBD3T sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-DMBTR sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-BSCHL sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-UMSKS sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-WRBTR sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-WAERS sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-REBZG sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-REBZT sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-WSKTO sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-ZBD1P sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-ZBD2P sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-SGTXT sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-GSBER sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-VBUND sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-ZUONR sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-XREF1 sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-XREF2 sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-XREF3 sy-vline 
WA_FIAPPL_S_INV_BSEG_EXTRACT_STR-MWSKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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