ABAP Select data from SAP table CRFILEST 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 CRFILEST 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 CRFILEST. 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 CRFILEST 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_CRFILEST TYPE STANDARD TABLE OF CRFILEST,
      WA_CRFILEST TYPE CRFILEST,
      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: <CRFILEST> TYPE CRFILEST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRFILEST
*  INTO TABLE @DATA(IT_CRFILEST2).
*--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_CRFILEST INDEX 1 INTO DATA(WA_CRFILEST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRFILEST>-DATUM = 1.
<CRFILEST>-UZEIT = 1.
<CRFILEST>-UNAME = 1.
<CRFILEST>-BUKRS = 1.
<CRFILEST>-BELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRFILEST-GJAHR, sy-vline,
  WA_CRFILEST-BSTAT, sy-vline,
  WA_CRFILEST-CCNUM, sy-vline,
  WA_CRFILEST-CRCLASS, sy-vline,
  WA_CRFILEST-KBLNR, sy-vline,
  WA_CRFILEST-SHKZG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRFILEST 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_CRFILEST 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_CRFILEST INTO WA_CRFILEST.


*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 ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRFILEST-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRFILEST-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CRFILEST-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRFILEST-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRFILEST-KBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRFILEST-KBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU152, internal->external for field TRHWBT
CALL FUNCTION 'CONVERSION_EXIT_AU152_OUTPUT'
  EXPORTING
    input =                      WA_CRFILEST-TRHWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRFILEST-TRHWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU152, internal->external for field TRFWBT
CALL FUNCTION 'CONVERSION_EXIT_AU152_OUTPUT'
  EXPORTING
    input =                      WA_CRFILEST-TRFWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRFILEST-TRFWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CRFILEST-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRFILEST-LANGU.
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_CRFILEST_STR, 
DATUM TYPE STRING,
UZEIT TYPE STRING,
UNAME TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BSTAT TYPE STRING,
CCNUM TYPE STRING,
CRCLASS TYPE STRING,
KBLNR TYPE STRING,
SHKZG TYPE STRING,
TRDAT TYPE STRING,
HWAER TYPE STRING,
TRHWBT TYPE STRING,
FWAER TYPE STRING,
TRFWBT TYPE STRING,
CRDSCODE TYPE STRING,
ZEILE TYPE STRING,
MSGTY TYPE STRING,
TEXT TYPE STRING,
ARBGB TYPE STRING,
TXTNR TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
LANGU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRFILEST_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_CRFILEST_STR-DATUM sy-vline 
WA_CRFILEST_STR-UZEIT sy-vline 
WA_CRFILEST_STR-UNAME sy-vline 
WA_CRFILEST_STR-BUKRS sy-vline 
WA_CRFILEST_STR-BELNR sy-vline 
WA_CRFILEST_STR-GJAHR sy-vline 
WA_CRFILEST_STR-BSTAT sy-vline 
WA_CRFILEST_STR-CCNUM sy-vline 
WA_CRFILEST_STR-CRCLASS sy-vline 
WA_CRFILEST_STR-KBLNR sy-vline 
WA_CRFILEST_STR-SHKZG sy-vline 
WA_CRFILEST_STR-TRDAT sy-vline 
WA_CRFILEST_STR-HWAER sy-vline 
WA_CRFILEST_STR-TRHWBT sy-vline 
WA_CRFILEST_STR-FWAER sy-vline 
WA_CRFILEST_STR-TRFWBT sy-vline 
WA_CRFILEST_STR-CRDSCODE sy-vline 
WA_CRFILEST_STR-ZEILE sy-vline 
WA_CRFILEST_STR-MSGTY sy-vline 
WA_CRFILEST_STR-TEXT sy-vline 
WA_CRFILEST_STR-ARBGB sy-vline 
WA_CRFILEST_STR-TXTNR sy-vline 
WA_CRFILEST_STR-MSGV1 sy-vline 
WA_CRFILEST_STR-MSGV2 sy-vline 
WA_CRFILEST_STR-MSGV3 sy-vline 
WA_CRFILEST_STR-MSGV4 sy-vline 
WA_CRFILEST_STR-LANGU sy-vline      INTO ld_text SEPARATED BY SPACE.

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