ABAP Select data from SAP table FINS_CFIN_S_AV_RSEG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINS_CFIN_S_AV_RSEG
*  INTO TABLE @DATA(IT_FINS_CFIN_S_AV_RSEG2).
*--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_FINS_CFIN_S_AV_RSEG INDEX 1 INTO DATA(WA_FINS_CFIN_S_AV_RSEG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINS_CFIN_S_AV_RSEG>-MANDT = 1.
<FINS_CFIN_S_AV_RSEG>-BELNR = 1.
<FINS_CFIN_S_AV_RSEG>-GJAHR = 1.
<FINS_CFIN_S_AV_RSEG>-BUZEI = 1.
<FINS_CFIN_S_AV_RSEG>-MWSKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINS_CFIN_S_AV_RSEG-MATNR, sy-vline,
  WA_FINS_CFIN_S_AV_RSEG-WRBTR, sy-vline,
  WA_FINS_CFIN_S_AV_RSEG-WERKS, sy-vline,
  WA_FINS_CFIN_S_AV_RSEG-MENGE, sy-vline,
  WA_FINS_CFIN_S_AV_RSEG-MEINS, sy-vline,
  WA_FINS_CFIN_S_AV_RSEG-BSTME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINS_CFIN_S_AV_RSEG 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_FINS_CFIN_S_AV_RSEG 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_FINS_CFIN_S_AV_RSEG INTO WA_FINS_CFIN_S_AV_RSEG.


*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_FINS_CFIN_S_AV_RSEG-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_RSEG-BELNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_S_AV_RSEG-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_RSEG-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_S_AV_RSEG-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_RSEG-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BSTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_S_AV_RSEG-BSTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_RSEG-BSTME.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_S_AV_RSEG-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_RSEG-EBELN.
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_FINS_CFIN_S_AV_RSEG_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
MWSKZ TYPE STRING,
MATNR TYPE STRING,
WRBTR TYPE STRING,
WERKS TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
BSTME TYPE STRING,
LIFNR TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINS_CFIN_S_AV_RSEG_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_FINS_CFIN_S_AV_RSEG_STR-MANDT sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-BELNR sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-GJAHR sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-BUZEI sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-MWSKZ sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-MATNR sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-WRBTR sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-WERKS sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-MENGE sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-MEINS sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-BSTME sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-LIFNR sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-EBELN sy-vline 
WA_FINS_CFIN_S_AV_RSEG_STR-EBELP sy-vline      INTO ld_text SEPARATED BY SPACE.

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