ABAP Select data from SAP table FIN_RFEBBU0001_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FIN_RFEBBU0001_ALV 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 FIN_RFEBBU0001_ALV. 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 FIN_RFEBBU0001_ALV 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_FIN_RFEBBU0001_ALV TYPE STANDARD TABLE OF FIN_RFEBBU0001_ALV,
      WA_FIN_RFEBBU0001_ALV TYPE FIN_RFEBBU0001_ALV,
      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: <FIN_RFEBBU0001_ALV> TYPE FIN_RFEBBU0001_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FIN_RFEBBU0001_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FIN_RFEBBU0001_ALV
  INTO TABLE IT_FIN_RFEBBU0001_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIN_RFEBBU0001_ALV
*  INTO TABLE @DATA(IT_FIN_RFEBBU0001_ALV2).
*--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_FIN_RFEBBU0001_ALV INDEX 1 INTO DATA(WA_FIN_RFEBBU0001_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FIN_RFEBBU0001_ALV ASSIGNING <FIN_RFEBBU0001_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIN_RFEBBU0001_ALV>-KUKEY = 1.
<FIN_RFEBBU0001_ALV>-ESNUM = 1.
<FIN_RFEBBU0001_ALV>-BATCH = 1.
<FIN_RFEBBU0001_ALV>-SGTXT = 1.
<FIN_RFEBBU0001_ALV>-KNRZA = 1.

ENDLOOP.

LOOP AT IT_FIN_RFEBBU0001_ALV INTO WA_FIN_RFEBBU0001_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIN_RFEBBU0001_ALV-AVSID, sy-vline,
  WA_FIN_RFEBBU0001_ALV-AVKON, sy-vline,
  WA_FIN_RFEBBU0001_ALV-NBBLN, sy-vline,
  WA_FIN_RFEBBU0001_ALV-CHECT, sy-vline,
  WA_FIN_RFEBBU0001_ALV-KWBTR, sy-vline,
  WA_FIN_RFEBBU0001_ALV-AKBLN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIN_RFEBBU0001_ALV 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_FIN_RFEBBU0001_ALV 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_FIN_RFEBBU0001_ALV INTO WA_FIN_RFEBBU0001_ALV.


*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 KNRZA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIN_RFEBBU0001_ALV-KNRZA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIN_RFEBBU0001_ALV-KNRZA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AVKON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIN_RFEBBU0001_ALV-AVKON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIN_RFEBBU0001_ALV-AVKON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NBBLN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIN_RFEBBU0001_ALV-NBBLN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIN_RFEBBU0001_ALV-NBBLN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field KWBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FIN_RFEBBU0001_ALV-KWBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIN_RFEBBU0001_ALV-KWBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKBLN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIN_RFEBBU0001_ALV-AKBLN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIN_RFEBBU0001_ALV-AKBLN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIN_RFEBBU0001_ALV-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIN_RFEBBU0001_ALV-BELNR.
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_FIN_RFEBBU0001_ALV_STR, 
KUKEY TYPE STRING,
ESNUM TYPE STRING,
BATCH TYPE STRING,
SGTXT TYPE STRING,
KNRZA TYPE STRING,
AVSID TYPE STRING,
AVKON TYPE STRING,
NBBLN TYPE STRING,
CHECT TYPE STRING,
KWBTR TYPE STRING,
AKBLN TYPE STRING,
BELNR TYPE STRING,
MESSAGES TYPE STRING,
ADVICE TYPE STRING,
KWAER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIN_RFEBBU0001_ALV_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_FIN_RFEBBU0001_ALV_STR-KUKEY sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-ESNUM sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-BATCH sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-SGTXT sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-KNRZA sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-AVSID sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-AVKON sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-NBBLN sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-CHECT sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-KWBTR sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-AKBLN sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-BELNR sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-MESSAGES sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-ADVICE sy-vline 
WA_FIN_RFEBBU0001_ALV_STR-KWAER sy-vline      INTO ld_text SEPARATED BY SPACE.

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