ABAP Select data from SAP table CFFRE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CFFRE
*  INTO TABLE @DATA(IT_CFFRE2).
*--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_CFFRE INDEX 1 INTO DATA(WA_CFFRE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CFFRE>-RSULT = 1.
<CFFRE>-RSAGG = 1.
<CFFRE>-RSORD = 1.
<CFFRE>-AGGTM = 1.
<CFFRE>-AGGFI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CFFRE-OPERA, sy-vline,
  WA_CFFRE-OPER1, sy-vline,
  WA_CFFRE-O1FLG, sy-vline,
  WA_CFFRE-OPER2, sy-vline,
  WA_CFFRE-O2FLG, sy-vline,
  WA_CFFRE-SIGN1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CFFRE 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_CFFRE 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_CFFRE INTO WA_CFFRE.


*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_CFFRE_STR, 
RSULT TYPE STRING,
RSAGG TYPE STRING,
RSORD TYPE STRING,
AGGTM TYPE STRING,
AGGFI TYPE STRING,
OPERA TYPE STRING,
OPER1 TYPE STRING,
O1FLG TYPE STRING,
OPER2 TYPE STRING,
O2FLG TYPE STRING,
SIGN1 TYPE STRING,
SIGN2 TYPE STRING,
MARK TYPE STRING,
LEVL TYPE STRING,
LOGNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CFFRE_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_CFFRE_STR-RSULT sy-vline 
WA_CFFRE_STR-RSAGG sy-vline 
WA_CFFRE_STR-RSORD sy-vline 
WA_CFFRE_STR-AGGTM sy-vline 
WA_CFFRE_STR-AGGFI sy-vline 
WA_CFFRE_STR-OPERA sy-vline 
WA_CFFRE_STR-OPER1 sy-vline 
WA_CFFRE_STR-O1FLG sy-vline 
WA_CFFRE_STR-OPER2 sy-vline 
WA_CFFRE_STR-O2FLG sy-vline 
WA_CFFRE_STR-SIGN1 sy-vline 
WA_CFFRE_STR-SIGN2 sy-vline 
WA_CFFRE_STR-MARK sy-vline 
WA_CFFRE_STR-LEVL sy-vline 
WA_CFFRE_STR-LOGNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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