ABAP Select data from SAP table OIRC_MR_FDEF_CF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIRC_MR_FDEF_CF
*  INTO TABLE @DATA(IT_OIRC_MR_FDEF_CF2).
*--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_OIRC_MR_FDEF_CF INDEX 1 INTO DATA(WA_OIRC_MR_FDEF_CF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIRC_MR_FDEF_CF>-MANDT = 1.
<OIRC_MR_FDEF_CF>-BUKRS = 1.
<OIRC_MR_FDEF_CF>-PBLTYP = 1.
<OIRC_MR_FDEF_CF>-PROCDEF = 1.
<OIRC_MR_FDEF_CF>-METREV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIRC_MR_FDEF_CF-SENAME, sy-vline,
  WA_OIRC_MR_FDEF_CF-SUPPRESS, sy-vline,
  WA_OIRC_MR_FDEF_CF-REQUIRED, sy-vline,
  WA_OIRC_MR_FDEF_CF-OPTIONAL, sy-vline,
  WA_OIRC_MR_FDEF_CF-DISPLAY, sy-vline,
  WA_OIRC_MR_FDEF_CF-RESET_VALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIRC_MR_FDEF_CF 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_OIRC_MR_FDEF_CF 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_OIRC_MR_FDEF_CF INTO WA_OIRC_MR_FDEF_CF.


*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_OIRC_MR_FDEF_CF_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
PBLTYP TYPE STRING,
PROCDEF TYPE STRING,
METREV TYPE STRING,
SENAME TYPE STRING,
SUPPRESS TYPE STRING,
REQUIRED TYPE STRING,
OPTIONAL TYPE STRING,
DISPLAY TYPE STRING,
RESET_VALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIRC_MR_FDEF_CF_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_OIRC_MR_FDEF_CF_STR-MANDT sy-vline 
WA_OIRC_MR_FDEF_CF_STR-BUKRS sy-vline 
WA_OIRC_MR_FDEF_CF_STR-PBLTYP sy-vline 
WA_OIRC_MR_FDEF_CF_STR-PROCDEF sy-vline 
WA_OIRC_MR_FDEF_CF_STR-METREV sy-vline 
WA_OIRC_MR_FDEF_CF_STR-SENAME sy-vline 
WA_OIRC_MR_FDEF_CF_STR-SUPPRESS sy-vline 
WA_OIRC_MR_FDEF_CF_STR-REQUIRED sy-vline 
WA_OIRC_MR_FDEF_CF_STR-OPTIONAL sy-vline 
WA_OIRC_MR_FDEF_CF_STR-DISPLAY sy-vline 
WA_OIRC_MR_FDEF_CF_STR-RESET_VALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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