ABAP Select data from SAP table CF501 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CF501 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 CF501. 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 CF501 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_CF501 TYPE STANDARD TABLE OF CF501,
      WA_CF501 TYPE CF501,
      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: <CF501> TYPE CF501.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CF501.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CF501
  INTO TABLE IT_CF501.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CF501
*  INTO TABLE @DATA(IT_CF5012).
*--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_CF501 INDEX 1 INTO DATA(WA_CF5012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CF501 ASSIGNING <CF501>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CF501>-MANDT = 1.
<CF501>-VERSIO = 1.
<CF501>-PLACTI = 1.
<CF501>-YEARB = 1.
<CF501>-PERDE = 1.

ENDLOOP.

LOOP AT IT_CF501 INTO WA_CF501.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CF501-XXRK1, sy-vline,
  WA_CF501-LAND1, sy-vline,
  WA_CF501-VERSO, sy-vline,
  WA_CF501-RECNR, sy-vline,
  WA_CF501-AEDTM, sy-vline,
  WA_CF501-UNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CF501 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_CF501 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_CF501 INTO WA_CF501.


*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 VERSIO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CF501-VERSIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CF501-VERSIO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YEARB
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CF501-YEARB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CF501-YEARB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QABSMG
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CF501-QABSMG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CF501-QABSMG.
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_CF501_STR, 
MANDT TYPE STRING,
VERSIO TYPE STRING,
PLACTI TYPE STRING,
YEARB TYPE STRING,
PERDE TYPE STRING,
XXRK1 TYPE STRING,
LAND1 TYPE STRING,
VERSO TYPE STRING,
RECNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
VERSO_WAERS TYPE STRING,
ABSMG TYPE STRING,
QABSMG TYPE STRING,
ERLOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CF501_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_CF501_STR-MANDT sy-vline 
WA_CF501_STR-VERSIO sy-vline 
WA_CF501_STR-PLACTI sy-vline 
WA_CF501_STR-YEARB sy-vline 
WA_CF501_STR-PERDE sy-vline 
WA_CF501_STR-XXRK1 sy-vline 
WA_CF501_STR-LAND1 sy-vline 
WA_CF501_STR-VERSO sy-vline 
WA_CF501_STR-RECNR sy-vline 
WA_CF501_STR-AEDTM sy-vline 
WA_CF501_STR-UNAME sy-vline 
WA_CF501_STR-VERSO_WAERS sy-vline 
WA_CF501_STR-ABSMG sy-vline 
WA_CF501_STR-QABSMG sy-vline 
WA_CF501_STR-ERLOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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