ABAP Select data from SAP table FINS_CFIN_S_AV_PO_ROACC_K 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_PO_ROACC_K 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_PO_ROACC_K. 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_PO_ROACC_K 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_PO_ROACC_K TYPE STANDARD TABLE OF FINS_CFIN_S_AV_PO_ROACC_K,
      WA_FINS_CFIN_S_AV_PO_ROACC_K TYPE FINS_CFIN_S_AV_PO_ROACC_K,
      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_PO_ROACC_K> TYPE FINS_CFIN_S_AV_PO_ROACC_K.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINS_CFIN_S_AV_PO_ROACC_K
*  INTO TABLE @DATA(IT_FINS_CFIN_S_AV_PO_ROACC_K2).
*--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_PO_ROACC_K INDEX 1 INTO DATA(WA_FINS_CFIN_S_AV_PO_ROACC_K2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINS_CFIN_S_AV_PO_ROACC_K>-KEY = 1.
<FINS_CFIN_S_AV_PO_ROACC_K>-PARENT_KEY = 1.
<FINS_CFIN_S_AV_PO_ROACC_K>-ROOT_KEY = 1.
<FINS_CFIN_S_AV_PO_ROACC_K>-FINS_LOGSYS = 1.
<FINS_CFIN_S_AV_PO_ROACC_K>-EBELN = 1.

ENDLOOP.

LOOP AT IT_FINS_CFIN_S_AV_PO_ROACC_K INTO WA_FINS_CFIN_S_AV_PO_ROACC_K.
*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_PO_ROACC_K-EBELP, sy-vline,
  WA_FINS_CFIN_S_AV_PO_ROACC_K-ZEKKN, sy-vline,
  WA_FINS_CFIN_S_AV_PO_ROACC_K-VGABE, sy-vline,
  WA_FINS_CFIN_S_AV_PO_ROACC_K-GJAHR, sy-vline,
  WA_FINS_CFIN_S_AV_PO_ROACC_K-BELNR, sy-vline,
  WA_FINS_CFIN_S_AV_PO_ROACC_K-BUZEI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINS_CFIN_S_AV_PO_ROACC_K 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_PO_ROACC_K 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_PO_ROACC_K INTO WA_FINS_CFIN_S_AV_PO_ROACC_K.


*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 FINS_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_S_AV_PO_ROACC_K-FINS_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_PO_ROACC_K-FINS_LOGSYS.
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_PO_ROACC_K-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_PO_ROACC_K-EBELN.
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_PO_ROACC_K-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_PO_ROACC_K-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field LFBNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_S_AV_PO_ROACC_K-LFBNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_PO_ROACC_K-LFBNR.
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_PO_ROACC_K_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
FINS_LOGSYS TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ZEKKN TYPE STRING,
VGABE TYPE STRING,
GJAHR TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
LFBNR TYPE STRING,
MENGE_F TYPE STRING,
MENGE TYPE STRING,
WRBTR TYPE STRING,
XUNPL TYPE STRING,
BEKKN TYPE STRING,
TOBEDELETED TYPE STRING,
ISEXPIRED TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINS_CFIN_S_AV_PO_ROACC_K_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_PO_ROACC_K_STR-KEY sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-PARENT_KEY sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-ROOT_KEY sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-FINS_LOGSYS sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-EBELN sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-EBELP sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-ZEKKN sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-VGABE sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-GJAHR sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-BELNR sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-BUZEI sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-LFBNR sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-MENGE_F sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-MENGE sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-WRBTR sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-XUNPL sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-BEKKN sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-TOBEDELETED sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-ISEXPIRED sy-vline 
WA_FINS_CFIN_S_AV_PO_ROACC_K_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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