ABAP Select data from SAP table FMIO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMIO
*  INTO TABLE @DATA(IT_FMIO2).
*--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_FMIO INDEX 1 INTO DATA(WA_FMIO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMIO>-MANDT = 1.
<FMIO>-OBJNR = 1.
<FMIO>-DATIV = 1.
<FMIO>-DATIB = 1.
<FMIO>-DATPV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMIO-DATPB, sy-vline,
  WA_FMIO-BUKRS, sy-vline,
  WA_FMIO-FISTL, sy-vline,
  WA_FMIO-FONDS, sy-vline,
  WA_FMIO-FIPEX, sy-vline,
  WA_FMIO-WRTTP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMIO 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_FMIO 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_FMIO INTO WA_FMIO.


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

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

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMIO-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMIO-HKONT.
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_FMIO_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
DATIV TYPE STRING,
DATIB TYPE STRING,
DATPV TYPE STRING,
DATPB TYPE STRING,
BUKRS TYPE STRING,
FISTL TYPE STRING,
FONDS TYPE STRING,
FIPEX TYPE STRING,
WRTTP TYPE STRING,
BTART TYPE STRING,
GNJHR TYPE STRING,
HKONT TYPE STRING,
STATS TYPE STRING,
CFLEV TYPE STRING,
OBJNRZ TYPE STRING,
VRGNG TYPE STRING,
USERDIM TYPE STRING,
FAREA TYPE STRING,
MEASURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMIO_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_FMIO_STR-MANDT sy-vline 
WA_FMIO_STR-OBJNR sy-vline 
WA_FMIO_STR-DATIV sy-vline 
WA_FMIO_STR-DATIB sy-vline 
WA_FMIO_STR-DATPV sy-vline 
WA_FMIO_STR-DATPB sy-vline 
WA_FMIO_STR-BUKRS sy-vline 
WA_FMIO_STR-FISTL sy-vline 
WA_FMIO_STR-FONDS sy-vline 
WA_FMIO_STR-FIPEX sy-vline 
WA_FMIO_STR-WRTTP sy-vline 
WA_FMIO_STR-BTART sy-vline 
WA_FMIO_STR-GNJHR sy-vline 
WA_FMIO_STR-HKONT sy-vline 
WA_FMIO_STR-STATS sy-vline 
WA_FMIO_STR-CFLEV sy-vline 
WA_FMIO_STR-OBJNRZ sy-vline 
WA_FMIO_STR-VRGNG sy-vline 
WA_FMIO_STR-USERDIM sy-vline 
WA_FMIO_STR-FAREA sy-vline 
WA_FMIO_STR-MEASURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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