ABAP Select data from SAP table FM01UD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FM01UD 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 FM01UD. 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 FM01UD 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_FM01UD TYPE STANDARD TABLE OF FM01UD,
      WA_FM01UD TYPE FM01UD,
      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: <FM01UD> TYPE FM01UD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FM01UD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FM01UD
  INTO TABLE IT_FM01UD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FM01UD
*  INTO TABLE @DATA(IT_FM01UD2).
*--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_FM01UD INDEX 1 INTO DATA(WA_FM01UD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FM01UD ASSIGNING <FM01UD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FM01UD>-MANDT = 1.
<FM01UD>-FIKRS = 1.
<FM01UD>-GJAHR = 1.
<FM01UD>-UDUPD = 1.
<FM01UD>-UDMETHODE = 1.

ENDLOOP.

LOOP AT IT_FM01UD INTO WA_FM01UD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FM01UD-UDMIN, sy-vline,
  WA_FM01UD-UDSTORNO, sy-vline,
  WA_FM01UD-INCHECK, sy-vline,
  WA_FM01UD-UDDEFICIT, sy-vline,
  WA_FM01UD-UDPAY, sy-vline,
  WA_FM01UD-UDINCTI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FM01UD 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_FM01UD 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_FM01UD INTO WA_FM01UD.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FM01UD-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FM01UD-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field OVFIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FM01UD-OVFIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FM01UD-OVFIPEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field COMOVFIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FM01UD-COMOVFIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FM01UD-COMOVFIPEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FM01UD-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FM01UD-GRANT_NBR.
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_FM01UD_STR, 
MANDT TYPE STRING,
FIKRS TYPE STRING,
GJAHR TYPE STRING,
UDUPD TYPE STRING,
UDMETHODE TYPE STRING,
UDMIN TYPE STRING,
UDSTORNO TYPE STRING,
INCHECK TYPE STRING,
UDDEFICIT TYPE STRING,
UDPAY TYPE STRING,
UDINCTI TYPE STRING,
PAYUDINCTI61 TYPE STRING,
PAYUDINCTI66 TYPE STRING,
PAYPROZ83 TYPE STRING,
PAYPROZ54 TYPE STRING,
PAYPROZ57 TYPE STRING,
PAYMINBDGT TYPE STRING,
PAYMINPROZ TYPE STRING,
PAYMININC TYPE STRING,
PAYMAXBDGT TYPE STRING,
PAYMAXPROZ TYPE STRING,
PAYMAXINC TYPE STRING,
PAYABSINT TYPE STRING,
OVFIPEX TYPE STRING,
OVFICTR TYPE STRING,
OVFONDS TYPE STRING,
OVFAREA TYPE STRING,
UDCOM TYPE STRING,
COMUDINCTI TYPE STRING,
COMUDINCTI61 TYPE STRING,
COMUDINCTI66 TYPE STRING,
COMPROZ83 TYPE STRING,
COMPROZ54 TYPE STRING,
COMPROZ57 TYPE STRING,
COMMINBDGT TYPE STRING,
COMMINPROZ TYPE STRING,
COMMININC TYPE STRING,
COMABSINT TYPE STRING,
COMMAXBDGT TYPE STRING,
COMMAXPROZ TYPE STRING,
COMMAXINC TYPE STRING,
COMOVFIPEX TYPE STRING,
COMOVFICTR TYPE STRING,
COMOVFONDS TYPE STRING,
COMOVFAREA TYPE STRING,
EHVMTNR TYPE STRING,
AHVMTNR TYPE STRING,
LOCKED TYPE STRING,
GRANT_NBR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FM01UD_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_FM01UD_STR-MANDT sy-vline 
WA_FM01UD_STR-FIKRS sy-vline 
WA_FM01UD_STR-GJAHR sy-vline 
WA_FM01UD_STR-UDUPD sy-vline 
WA_FM01UD_STR-UDMETHODE sy-vline 
WA_FM01UD_STR-UDMIN sy-vline 
WA_FM01UD_STR-UDSTORNO sy-vline 
WA_FM01UD_STR-INCHECK sy-vline 
WA_FM01UD_STR-UDDEFICIT sy-vline 
WA_FM01UD_STR-UDPAY sy-vline 
WA_FM01UD_STR-UDINCTI sy-vline 
WA_FM01UD_STR-PAYUDINCTI61 sy-vline 
WA_FM01UD_STR-PAYUDINCTI66 sy-vline 
WA_FM01UD_STR-PAYPROZ83 sy-vline 
WA_FM01UD_STR-PAYPROZ54 sy-vline 
WA_FM01UD_STR-PAYPROZ57 sy-vline 
WA_FM01UD_STR-PAYMINBDGT sy-vline 
WA_FM01UD_STR-PAYMINPROZ sy-vline 
WA_FM01UD_STR-PAYMININC sy-vline 
WA_FM01UD_STR-PAYMAXBDGT sy-vline 
WA_FM01UD_STR-PAYMAXPROZ sy-vline 
WA_FM01UD_STR-PAYMAXINC sy-vline 
WA_FM01UD_STR-PAYABSINT sy-vline 
WA_FM01UD_STR-OVFIPEX sy-vline 
WA_FM01UD_STR-OVFICTR sy-vline 
WA_FM01UD_STR-OVFONDS sy-vline 
WA_FM01UD_STR-OVFAREA sy-vline 
WA_FM01UD_STR-UDCOM sy-vline 
WA_FM01UD_STR-COMUDINCTI sy-vline 
WA_FM01UD_STR-COMUDINCTI61 sy-vline 
WA_FM01UD_STR-COMUDINCTI66 sy-vline 
WA_FM01UD_STR-COMPROZ83 sy-vline 
WA_FM01UD_STR-COMPROZ54 sy-vline 
WA_FM01UD_STR-COMPROZ57 sy-vline 
WA_FM01UD_STR-COMMINBDGT sy-vline 
WA_FM01UD_STR-COMMINPROZ sy-vline 
WA_FM01UD_STR-COMMININC sy-vline 
WA_FM01UD_STR-COMABSINT sy-vline 
WA_FM01UD_STR-COMMAXBDGT sy-vline 
WA_FM01UD_STR-COMMAXPROZ sy-vline 
WA_FM01UD_STR-COMMAXINC sy-vline 
WA_FM01UD_STR-COMOVFIPEX sy-vline 
WA_FM01UD_STR-COMOVFICTR sy-vline 
WA_FM01UD_STR-COMOVFONDS sy-vline 
WA_FM01UD_STR-COMOVFAREA sy-vline 
WA_FM01UD_STR-EHVMTNR sy-vline 
WA_FM01UD_STR-AHVMTNR sy-vline 
WA_FM01UD_STR-LOCKED sy-vline 
WA_FM01UD_STR-GRANT_NBR sy-vline      INTO ld_text SEPARATED BY SPACE.

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