ABAP Select data from SAP table CFFSD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CFFSD
*  INTO TABLE @DATA(IT_CFFSD2).
*--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_CFFSD INDEX 1 INTO DATA(WA_CFFSD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CFFSD>-KEYRA = 1.
<CFFSD>-RSULT = 1.
<CFFSD>-RSAGG = 1.
<CFFSD>-RSORD = 1.
<CFFSD>-OPERA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CFFSD-OPER1, sy-vline,
  WA_CFFSD-O1FLG, sy-vline,
  WA_CFFSD-OPER2, sy-vline,
  WA_CFFSD-O2FLG, sy-vline,
  WA_CFFSD-RVFLG, sy-vline,
  WA_CFFSD-RVALP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CFFSD 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_CFFSD 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_CFFSD INTO WA_CFFSD.


*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_CFFSD_STR, 
KEYRA TYPE STRING,
RSULT TYPE STRING,
RSAGG TYPE STRING,
RSORD TYPE STRING,
OPERA TYPE STRING,
OPER1 TYPE STRING,
O1FLG TYPE STRING,
OPER2 TYPE STRING,
O2FLG TYPE STRING,
RVFLG TYPE STRING,
RVALP TYPE STRING,
RVALF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CFFSD_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_CFFSD_STR-KEYRA sy-vline 
WA_CFFSD_STR-RSULT sy-vline 
WA_CFFSD_STR-RSAGG sy-vline 
WA_CFFSD_STR-RSORD sy-vline 
WA_CFFSD_STR-OPERA sy-vline 
WA_CFFSD_STR-OPER1 sy-vline 
WA_CFFSD_STR-O1FLG sy-vline 
WA_CFFSD_STR-OPER2 sy-vline 
WA_CFFSD_STR-O2FLG sy-vline 
WA_CFFSD_STR-RVFLG sy-vline 
WA_CFFSD_STR-RVALP sy-vline 
WA_CFFSD_STR-RVALF sy-vline      INTO ld_text SEPARATED BY SPACE.

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