ABAP Select data from SAP table FMUDRULE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMUDRULE
*  INTO TABLE @DATA(IT_FMUDRULE2).
*--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_FMUDRULE INDEX 1 INTO DATA(WA_FMUDRULE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMUDRULE>-MANDT = 1.
<FMUDRULE>-FIPEX = 1.
<FMUDRULE>-FICTR = 1.
<FMUDRULE>-FONDS = 1.
<FMUDRULE>-FAREA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMUDRULE-GJAHR, sy-vline,
  WA_FMUDRULE-FIKRS, sy-vline,
  WA_FMUDRULE-UDECK, sy-vline,
  WA_FMUDRULE-EHVMTNR, sy-vline,
  WA_FMUDRULE-AHVMTNR, sy-vline,
  WA_FMUDRULE-UDMETHODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMUDRULE 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_FMUDRULE 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_FMUDRULE INTO WA_FMUDRULE.


*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_FMUDRULE-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMUDRULE-FIPEX.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit FMCIL, internal->external for field COMOVFIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FMUDRULE-COMOVFIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMUDRULE-COMOVFIPEX.
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_FMUDRULE_STR, 
MANDT TYPE STRING,
FIPEX TYPE STRING,
FICTR TYPE STRING,
FONDS TYPE STRING,
FAREA TYPE STRING,
GJAHR TYPE STRING,
FIKRS TYPE STRING,
UDECK TYPE STRING,
EHVMTNR TYPE STRING,
AHVMTNR TYPE STRING,
UDMETHODE TYPE STRING,
INCHECK TYPE STRING,
DEAKTIV TYPE STRING,
UDPAY TYPE STRING,
UDINCTI TYPE STRING,
PAYUDINCTI61 TYPE STRING,
PAYUDINCTI66 TYPE STRING,
PAYPROZ83 TYPE STRING,
PAYPROZ54 TYPE STRING,
PAYPROZ57 TYPE STRING,
MINBDGT TYPE STRING,
MINPROZ TYPE STRING,
MININC TYPE STRING,
MAXBDGT TYPE STRING,
MAXPROZ TYPE STRING,
MAXINC TYPE STRING,
ABSINT TYPE STRING,
TOTLINC TYPE STRING,
OVFIPEX TYPE STRING,
OVFICTR TYPE STRING,
OVFONDS TYPE STRING,
OVFAREA TYPE STRING,
OVPROZ 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,
COMMAXBDGT TYPE STRING,
COMMAXPROZ TYPE STRING,
COMMAXINC TYPE STRING,
COMABSINT TYPE STRING,
COMTOTLINC TYPE STRING,
COMOVFIPEX TYPE STRING,
COMOVFICTR TYPE STRING,
COMOVFONDS TYPE STRING,
COMOVFAREA TYPE STRING,
COMOVPROZ TYPE STRING,
UDUPD TYPE STRING,
UDMIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMUDRULE_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_FMUDRULE_STR-MANDT sy-vline 
WA_FMUDRULE_STR-FIPEX sy-vline 
WA_FMUDRULE_STR-FICTR sy-vline 
WA_FMUDRULE_STR-FONDS sy-vline 
WA_FMUDRULE_STR-FAREA sy-vline 
WA_FMUDRULE_STR-GJAHR sy-vline 
WA_FMUDRULE_STR-FIKRS sy-vline 
WA_FMUDRULE_STR-UDECK sy-vline 
WA_FMUDRULE_STR-EHVMTNR sy-vline 
WA_FMUDRULE_STR-AHVMTNR sy-vline 
WA_FMUDRULE_STR-UDMETHODE sy-vline 
WA_FMUDRULE_STR-INCHECK sy-vline 
WA_FMUDRULE_STR-DEAKTIV sy-vline 
WA_FMUDRULE_STR-UDPAY sy-vline 
WA_FMUDRULE_STR-UDINCTI sy-vline 
WA_FMUDRULE_STR-PAYUDINCTI61 sy-vline 
WA_FMUDRULE_STR-PAYUDINCTI66 sy-vline 
WA_FMUDRULE_STR-PAYPROZ83 sy-vline 
WA_FMUDRULE_STR-PAYPROZ54 sy-vline 
WA_FMUDRULE_STR-PAYPROZ57 sy-vline 
WA_FMUDRULE_STR-MINBDGT sy-vline 
WA_FMUDRULE_STR-MINPROZ sy-vline 
WA_FMUDRULE_STR-MININC sy-vline 
WA_FMUDRULE_STR-MAXBDGT sy-vline 
WA_FMUDRULE_STR-MAXPROZ sy-vline 
WA_FMUDRULE_STR-MAXINC sy-vline 
WA_FMUDRULE_STR-ABSINT sy-vline 
WA_FMUDRULE_STR-TOTLINC sy-vline 
WA_FMUDRULE_STR-OVFIPEX sy-vline 
WA_FMUDRULE_STR-OVFICTR sy-vline 
WA_FMUDRULE_STR-OVFONDS sy-vline 
WA_FMUDRULE_STR-OVFAREA sy-vline 
WA_FMUDRULE_STR-OVPROZ sy-vline 
WA_FMUDRULE_STR-UDCOM sy-vline 
WA_FMUDRULE_STR-COMUDINCTI sy-vline 
WA_FMUDRULE_STR-COMUDINCTI61 sy-vline 
WA_FMUDRULE_STR-COMUDINCTI66 sy-vline 
WA_FMUDRULE_STR-COMPROZ83 sy-vline 
WA_FMUDRULE_STR-COMPROZ54 sy-vline 
WA_FMUDRULE_STR-COMPROZ57 sy-vline 
WA_FMUDRULE_STR-COMMINBDGT sy-vline 
WA_FMUDRULE_STR-COMMINPROZ sy-vline 
WA_FMUDRULE_STR-COMMININC sy-vline 
WA_FMUDRULE_STR-COMMAXBDGT sy-vline 
WA_FMUDRULE_STR-COMMAXPROZ sy-vline 
WA_FMUDRULE_STR-COMMAXINC sy-vline 
WA_FMUDRULE_STR-COMABSINT sy-vline 
WA_FMUDRULE_STR-COMTOTLINC sy-vline 
WA_FMUDRULE_STR-COMOVFIPEX sy-vline 
WA_FMUDRULE_STR-COMOVFICTR sy-vline 
WA_FMUDRULE_STR-COMOVFONDS sy-vline 
WA_FMUDRULE_STR-COMOVFAREA sy-vline 
WA_FMUDRULE_STR-COMOVPROZ sy-vline 
WA_FMUDRULE_STR-UDUPD sy-vline 
WA_FMUDRULE_STR-UDMIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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