ABAP Select data from SAP table RFCFM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFCFM
*  INTO TABLE @DATA(IT_RFCFM2).
*--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_RFCFM INDEX 1 INTO DATA(WA_RFCFM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFCFM>-NUM = 1.
<RFCFM>-NAME = 1.
<RFCFM>-NAMELOWER = 1.
<RFCFM>-NAMEUPLOW = 1.
<RFCFM>-NAMELEN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFCFM-PROGNAME, sy-vline,
  WA_RFCFM-AREA, sy-vline,
  WA_RFCFM-APPL, sy-vline,
  WA_RFCFM-RELDATE, sy-vline,
  WA_RFCFM-REMOTE, sy-vline,
  WA_RFCFM-NUMIMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFCFM 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_RFCFM 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_RFCFM INTO WA_RFCFM.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RFCFM_STR, 
NUM TYPE STRING,
NAME TYPE STRING,
NAMELOWER TYPE STRING,
NAMEUPLOW TYPE STRING,
NAMELEN TYPE STRING,
PROGNAME TYPE STRING,
AREA TYPE STRING,
APPL TYPE STRING,
RELDATE TYPE STRING,
REMOTE TYPE STRING,
NUMIMP TYPE STRING,
NUMEXP TYPE STRING,
NUMTAB TYPE STRING,
NUMEXC TYPE STRING,
NUMIMP1 TYPE STRING,
NUMEXP1 TYPE STRING,
NUMTAB1 TYPE STRING,
NUMEXC1 TYPE STRING,
AIMPLEN TYPE STRING,
AEXPLEN TYPE STRING,
ATABLEN TYPE STRING,
ANUMFIMP TYPE STRING,
ANUMFEXP TYPE STRING,
ANUMFTAB TYPE STRING,
XRFCBYTE TYPE STRING,
XRFCBCD TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFCFM_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_RFCFM_STR-NUM sy-vline 
WA_RFCFM_STR-NAME sy-vline 
WA_RFCFM_STR-NAMELOWER sy-vline 
WA_RFCFM_STR-NAMEUPLOW sy-vline 
WA_RFCFM_STR-NAMELEN sy-vline 
WA_RFCFM_STR-PROGNAME sy-vline 
WA_RFCFM_STR-AREA sy-vline 
WA_RFCFM_STR-APPL sy-vline 
WA_RFCFM_STR-RELDATE sy-vline 
WA_RFCFM_STR-REMOTE sy-vline 
WA_RFCFM_STR-NUMIMP sy-vline 
WA_RFCFM_STR-NUMEXP sy-vline 
WA_RFCFM_STR-NUMTAB sy-vline 
WA_RFCFM_STR-NUMEXC sy-vline 
WA_RFCFM_STR-NUMIMP1 sy-vline 
WA_RFCFM_STR-NUMEXP1 sy-vline 
WA_RFCFM_STR-NUMTAB1 sy-vline 
WA_RFCFM_STR-NUMEXC1 sy-vline 
WA_RFCFM_STR-AIMPLEN sy-vline 
WA_RFCFM_STR-AEXPLEN sy-vline 
WA_RFCFM_STR-ATABLEN sy-vline 
WA_RFCFM_STR-ANUMFIMP sy-vline 
WA_RFCFM_STR-ANUMFEXP sy-vline 
WA_RFCFM_STR-ANUMFTAB sy-vline 
WA_RFCFM_STR-XRFCBYTE sy-vline 
WA_RFCFM_STR-XRFCBCD sy-vline 
WA_RFCFM_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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