ABAP Select data from SAP table CFFIE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CFFIE
*  INTO TABLE @DATA(IT_CFFIE2).
*--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_CFFIE INDEX 1 INTO DATA(WA_CFFIE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CFFIE>-TABNM = 1.
<CFFIE>-FIELD = 1.
<CFFIE>-ROLNM = 1.
<CFFIE>-DOMNM = 1.
<CFFIE>-CHTAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CFFIE-POSIT, sy-vline,
  WA_CFFIE-USGFL, sy-vline,
  WA_CFFIE-KEYFL, sy-vline,
  WA_CFFIE-DTYPE, sy-vline,
  WA_CFFIE-ITYPE, sy-vline,
  WA_CFFIE-ILENG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CFFIE 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_CFFIE 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_CFFIE INTO WA_CFFIE.


*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 DTYPE, internal->external for field DTYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_CFFIE-DTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CFFIE-DTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT0
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CFFIE-UNIT0
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CFFIE-UNIT0.
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_CFFIE_STR, 
TABNM TYPE STRING,
FIELD TYPE STRING,
ROLNM TYPE STRING,
DOMNM TYPE STRING,
CHTAB TYPE STRING,
POSIT TYPE STRING,
USGFL TYPE STRING,
KEYFL TYPE STRING,
DTYPE TYPE STRING,
ITYPE TYPE STRING,
ILENG TYPE STRING,
OFFST TYPE STRING,
DIGIT TYPE STRING,
OUTLN TYPE STRING,
DECIM TYPE STRING,
AGGRE TYPE STRING,
PRDEC TYPE STRING,
PRSNT TYPE STRING,
OPORD TYPE STRING,
RFFLD TYPE STRING,
PARID TYPE STRING,
CUMRK TYPE STRING,
CUKY0 TYPE STRING,
UNIT0 TYPE STRING,
CUDEC TYPE STRING,
CONVX TYPE STRING,
MASK TYPE STRING,
MASKL TYPE STRING,
TFLAG TYPE STRING,
FTXTS TYPE STRING,
FTEXT TYPE STRING,
FTXTL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CFFIE_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_CFFIE_STR-TABNM sy-vline 
WA_CFFIE_STR-FIELD sy-vline 
WA_CFFIE_STR-ROLNM sy-vline 
WA_CFFIE_STR-DOMNM sy-vline 
WA_CFFIE_STR-CHTAB sy-vline 
WA_CFFIE_STR-POSIT sy-vline 
WA_CFFIE_STR-USGFL sy-vline 
WA_CFFIE_STR-KEYFL sy-vline 
WA_CFFIE_STR-DTYPE sy-vline 
WA_CFFIE_STR-ITYPE sy-vline 
WA_CFFIE_STR-ILENG sy-vline 
WA_CFFIE_STR-OFFST sy-vline 
WA_CFFIE_STR-DIGIT sy-vline 
WA_CFFIE_STR-OUTLN sy-vline 
WA_CFFIE_STR-DECIM sy-vline 
WA_CFFIE_STR-AGGRE sy-vline 
WA_CFFIE_STR-PRDEC sy-vline 
WA_CFFIE_STR-PRSNT sy-vline 
WA_CFFIE_STR-OPORD sy-vline 
WA_CFFIE_STR-RFFLD sy-vline 
WA_CFFIE_STR-PARID sy-vline 
WA_CFFIE_STR-CUMRK sy-vline 
WA_CFFIE_STR-CUKY0 sy-vline 
WA_CFFIE_STR-UNIT0 sy-vline 
WA_CFFIE_STR-CUDEC sy-vline 
WA_CFFIE_STR-CONVX sy-vline 
WA_CFFIE_STR-MASK sy-vline 
WA_CFFIE_STR-MASKL sy-vline 
WA_CFFIE_STR-TFLAG sy-vline 
WA_CFFIE_STR-FTXTS sy-vline 
WA_CFFIE_STR-FTEXT sy-vline 
WA_CFFIE_STR-FTXTL sy-vline      INTO ld_text SEPARATED BY SPACE.

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