ABAP Select data from SAP table FUCN_FIDOC_DETAIL_AP_BASIC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FUCN_FIDOC_DETAIL_AP_BASIC
*  INTO TABLE @DATA(IT_FUCN_FIDOC_DETAIL_AP_BASIC2).
*--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_FUCN_FIDOC_DETAIL_AP_BASIC INDEX 1 INTO DATA(WA_FUCN_FIDOC_DETAIL_AP_BASIC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FUCN_FIDOC_DETAIL_AP_BASIC>-BUKRS = 1.
<FUCN_FIDOC_DETAIL_AP_BASIC>-ZFBDT = 1.
<FUCN_FIDOC_DETAIL_AP_BASIC>-ZTERM = 1.
<FUCN_FIDOC_DETAIL_AP_BASIC>-ZBD1T = 1.
<FUCN_FIDOC_DETAIL_AP_BASIC>-ZBD1P = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FUCN_FIDOC_DETAIL_AP_BASIC-ZBD2T, sy-vline,
  WA_FUCN_FIDOC_DETAIL_AP_BASIC-ZBD2P, sy-vline,
  WA_FUCN_FIDOC_DETAIL_AP_BASIC-ZBD3T, sy-vline,
  WA_FUCN_FIDOC_DETAIL_AP_BASIC-SKFBT, sy-vline,
  WA_FUCN_FIDOC_DETAIL_AP_BASIC-WSKTO, sy-vline,
  WA_FUCN_FIDOC_DETAIL_AP_BASIC-ZLSCH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FUCN_FIDOC_DETAIL_AP_BASIC 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_FUCN_FIDOC_DETAIL_AP_BASIC 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_FUCN_FIDOC_DETAIL_AP_BASIC INTO WA_FUCN_FIDOC_DETAIL_AP_BASIC.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FUCN_FIDOC_DETAIL_AP_BASIC-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FUCN_FIDOC_DETAIL_AP_BASIC-EBELN.
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_FUCN_FIDOC_DETAIL_AP_BASIC_STR, 
BUKRS TYPE STRING,
ZFBDT TYPE STRING,
ZTERM TYPE STRING,
ZBD1T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2T TYPE STRING,
ZBD2P TYPE STRING,
ZBD3T TYPE STRING,
SKFBT TYPE STRING,
WSKTO TYPE STRING,
ZLSCH TYPE STRING,
ZLSPR TYPE STRING,
ZUONR TYPE STRING,
GSBER TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
REBZZ TYPE STRING,
KIDNO TYPE STRING,
AUGDT TYPE STRING,
AUGBL TYPE STRING,
WAERS TYPE STRING,
KOART TYPE STRING,
XNEGP TYPE STRING,
MANDT TYPE STRING,
LANDL TYPE STRING,
VBUND TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ZEKKN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FUCN_FIDOC_DETAIL_AP_BASIC_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_FUCN_FIDOC_DETAIL_AP_BASIC_STR-BUKRS sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZFBDT sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZTERM sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZBD1T sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZBD1P sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZBD2T sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZBD2P sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZBD3T sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-SKFBT sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-WSKTO sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZLSCH sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZLSPR sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZUONR sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-GSBER sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-REBZG sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-REBZJ sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-REBZZ sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-KIDNO sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-AUGDT sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-AUGBL sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-WAERS sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-KOART sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-XNEGP sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-MANDT sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-LANDL sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-VBUND sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-EBELN sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-EBELP sy-vline 
WA_FUCN_FIDOC_DETAIL_AP_BASIC_STR-ZEKKN sy-vline      INTO ld_text SEPARATED BY SPACE.

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