ABAP Select data from SAP table FMIDATAFI into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FMIDATAFI 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 FMIDATAFI. 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 FMIDATAFI 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_FMIDATAFI TYPE STANDARD TABLE OF FMIDATAFI,
      WA_FMIDATAFI TYPE FMIDATAFI,
      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: <FMIDATAFI> TYPE FMIDATAFI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMIDATAFI
*  INTO TABLE @DATA(IT_FMIDATAFI2).
*--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_FMIDATAFI INDEX 1 INTO DATA(WA_FMIDATAFI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMIDATAFI>-HKONT = 1.
<FMIDATAFI>-VOBUKRS = 1.
<FMIDATAFI>-VOGJAHR = 1.
<FMIDATAFI>-VOBELNR = 1.
<FMIDATAFI>-VOBUZEI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMIDATAFI-KNGJAHR, sy-vline,
  WA_FMIDATAFI-KNBELNR, sy-vline,
  WA_FMIDATAFI-KNBUZEI, sy-vline,
  WA_FMIDATAFI-SKNTO, sy-vline,
  WA_FMIDATAFI-RDIFF, sy-vline,
  WA_FMIDATAFI-PAYFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMIDATAFI 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_FMIDATAFI 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_FMIDATAFI INTO WA_FMIDATAFI.


*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_FMIDATAFI-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMIDATAFI-HKONT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FMIDATAFI-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMIDATAFI-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMIDATAFI-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMIDATAFI-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_FMIDATAFI_STR, 
HKONT TYPE STRING,
VOBUKRS TYPE STRING,
VOGJAHR TYPE STRING,
VOBELNR TYPE STRING,
VOBUZEI TYPE STRING,
KNGJAHR TYPE STRING,
KNBELNR TYPE STRING,
KNBUZEI TYPE STRING,
SKNTO TYPE STRING,
RDIFF TYPE STRING,
PAYFLG TYPE STRING,
PSOBT TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
VBUND TYPE STRING,
XREF3 TYPE STRING,
PUMETH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMIDATAFI_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_FMIDATAFI_STR-HKONT sy-vline 
WA_FMIDATAFI_STR-VOBUKRS sy-vline 
WA_FMIDATAFI_STR-VOGJAHR sy-vline 
WA_FMIDATAFI_STR-VOBELNR sy-vline 
WA_FMIDATAFI_STR-VOBUZEI sy-vline 
WA_FMIDATAFI_STR-KNGJAHR sy-vline 
WA_FMIDATAFI_STR-KNBELNR sy-vline 
WA_FMIDATAFI_STR-KNBUZEI sy-vline 
WA_FMIDATAFI_STR-SKNTO sy-vline 
WA_FMIDATAFI_STR-RDIFF sy-vline 
WA_FMIDATAFI_STR-PAYFLG sy-vline 
WA_FMIDATAFI_STR-PSOBT sy-vline 
WA_FMIDATAFI_STR-MENGE sy-vline 
WA_FMIDATAFI_STR-MEINS sy-vline 
WA_FMIDATAFI_STR-VBUND sy-vline 
WA_FMIDATAFI_STR-XREF3 sy-vline 
WA_FMIDATAFI_STR-PUMETH sy-vline      INTO ld_text SEPARATED BY SPACE.

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