ABAP Select data from SAP table FDM_AR_CREDITMEMO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDM_AR_CREDITMEMO
*  INTO TABLE @DATA(IT_FDM_AR_CREDITMEMO2).
*--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_FDM_AR_CREDITMEMO INDEX 1 INTO DATA(WA_FDM_AR_CREDITMEMO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDM_AR_CREDITMEMO>-BUKRS = 1.
<FDM_AR_CREDITMEMO>-BELNR = 1.
<FDM_AR_CREDITMEMO>-GJAHR = 1.
<FDM_AR_CREDITMEMO>-BUZEI = 1.
<FDM_AR_CREDITMEMO>-BLART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDM_AR_CREDITMEMO-BSCHL, sy-vline,
  WA_FDM_AR_CREDITMEMO-KOART, sy-vline,
  WA_FDM_AR_CREDITMEMO-KONKO, sy-vline,
  WA_FDM_AR_CREDITMEMO-HKONT, sy-vline,
  WA_FDM_AR_CREDITMEMO-EMPFG, sy-vline,
  WA_FDM_AR_CREDITMEMO-VERZG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDM_AR_CREDITMEMO 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_FDM_AR_CREDITMEMO 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_FDM_AR_CREDITMEMO INTO WA_FDM_AR_CREDITMEMO.


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

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

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

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

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

*Conversion exit GJAHR, internal->external for field REBZJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FDM_AR_CREDITMEMO-REBZJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_AR_CREDITMEMO-REBZJ.
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_FDM_AR_CREDITMEMO_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
BLART TYPE STRING,
BSCHL TYPE STRING,
KOART TYPE STRING,
KONKO TYPE STRING,
HKONT TYPE STRING,
EMPFG TYPE STRING,
VERZG TYPE STRING,
REBZT TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
REBZZ TYPE STRING,
WRBTR TYPE STRING,
OPEN_AMOUNT TYPE STRING,
CANCL_AMOUNT TYPE STRING,
RESOLVED_AMOUNT TYPE STRING,
XZAHL TYPE STRING,
GUID TYPE STRING,
P2PAY_GUID TYPE STRING,
XDISP TYPE STRING,
XP2PAY TYPE STRING,
PAYDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDM_AR_CREDITMEMO_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_FDM_AR_CREDITMEMO_STR-BUKRS sy-vline 
WA_FDM_AR_CREDITMEMO_STR-BELNR sy-vline 
WA_FDM_AR_CREDITMEMO_STR-GJAHR sy-vline 
WA_FDM_AR_CREDITMEMO_STR-BUZEI sy-vline 
WA_FDM_AR_CREDITMEMO_STR-BLART sy-vline 
WA_FDM_AR_CREDITMEMO_STR-BSCHL sy-vline 
WA_FDM_AR_CREDITMEMO_STR-KOART sy-vline 
WA_FDM_AR_CREDITMEMO_STR-KONKO sy-vline 
WA_FDM_AR_CREDITMEMO_STR-HKONT sy-vline 
WA_FDM_AR_CREDITMEMO_STR-EMPFG sy-vline 
WA_FDM_AR_CREDITMEMO_STR-VERZG sy-vline 
WA_FDM_AR_CREDITMEMO_STR-REBZT sy-vline 
WA_FDM_AR_CREDITMEMO_STR-REBZG sy-vline 
WA_FDM_AR_CREDITMEMO_STR-REBZJ sy-vline 
WA_FDM_AR_CREDITMEMO_STR-REBZZ sy-vline 
WA_FDM_AR_CREDITMEMO_STR-WRBTR sy-vline 
WA_FDM_AR_CREDITMEMO_STR-OPEN_AMOUNT sy-vline 
WA_FDM_AR_CREDITMEMO_STR-CANCL_AMOUNT sy-vline 
WA_FDM_AR_CREDITMEMO_STR-RESOLVED_AMOUNT sy-vline 
WA_FDM_AR_CREDITMEMO_STR-XZAHL sy-vline 
WA_FDM_AR_CREDITMEMO_STR-GUID sy-vline 
WA_FDM_AR_CREDITMEMO_STR-P2PAY_GUID sy-vline 
WA_FDM_AR_CREDITMEMO_STR-XDISP sy-vline 
WA_FDM_AR_CREDITMEMO_STR-XP2PAY sy-vline 
WA_FDM_AR_CREDITMEMO_STR-PAYDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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