ABAP Select data from SAP table RFLISTI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFLISTI
*  INTO TABLE @DATA(IT_RFLISTI2).
*--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_RFLISTI INDEX 1 INTO DATA(WA_RFLISTI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFLISTI>-LSTAT = 1.
<RFLISTI>-FILL1 = 1.
<RFLISTI>-STYPE = 1.
<RFLISTI>-LSIND = 1.
<RFLISTI>-CPAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFLISTI-CUCOL, sy-vline,
  WA_RFLISTI-CUROW, sy-vline,
  WA_RFLISTI-LILLI, sy-vline,
  WA_RFLISTI-SROWS, sy-vline,
  WA_RFLISTI-RSTAT, sy-vline,
  WA_RFLISTI-PFKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFLISTI 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_RFLISTI 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_RFLISTI INTO WA_RFLISTI.


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

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFLISTI-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFLISTI-LIFNR.
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_RFLISTI_STR, 
LSTAT TYPE STRING,
FILL1 TYPE STRING,
STYPE TYPE STRING,
LSIND TYPE STRING,
CPAGE TYPE STRING,
CUCOL TYPE STRING,
CUROW TYPE STRING,
LILLI TYPE STRING,
SROWS TYPE STRING,
RSTAT TYPE STRING,
PFKEY TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
SPEZ1 TYPE STRING,
SPEZ2 TYPE STRING,
SPEZ3 TYPE STRING,
SPEZ4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFLISTI_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_RFLISTI_STR-LSTAT sy-vline 
WA_RFLISTI_STR-FILL1 sy-vline 
WA_RFLISTI_STR-STYPE sy-vline 
WA_RFLISTI_STR-LSIND sy-vline 
WA_RFLISTI_STR-CPAGE sy-vline 
WA_RFLISTI_STR-CUCOL sy-vline 
WA_RFLISTI_STR-CUROW sy-vline 
WA_RFLISTI_STR-LILLI sy-vline 
WA_RFLISTI_STR-SROWS sy-vline 
WA_RFLISTI_STR-RSTAT sy-vline 
WA_RFLISTI_STR-PFKEY sy-vline 
WA_RFLISTI_STR-KUNNR sy-vline 
WA_RFLISTI_STR-LIFNR sy-vline 
WA_RFLISTI_STR-SPEZ1 sy-vline 
WA_RFLISTI_STR-SPEZ2 sy-vline 
WA_RFLISTI_STR-SPEZ3 sy-vline 
WA_RFLISTI_STR-SPEZ4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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