ABAP Select data from SAP table RJKIF_S_REF_ORDER_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKIF_S_REF_ORDER_ITEM
*  INTO TABLE @DATA(IT_RJKIF_S_REF_ORDER_ITEM2).
*--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_RJKIF_S_REF_ORDER_ITEM INDEX 1 INTO DATA(WA_RJKIF_S_REF_ORDER_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKIF_S_REF_ORDER_ITEM>-GPNR_RG = 1.
<RJKIF_S_REF_ORDER_ITEM>-GPNR_RE = 1.
<RJKIF_S_REF_ORDER_ITEM>-GPNR_WE = 1.
<RJKIF_S_REF_ORDER_ITEM>-GUELTIGVON = 1.
<RJKIF_S_REF_ORDER_ITEM>-GUELTIGBIS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKIF_S_REF_ORDER_ITEM-MATNRWERB, sy-vline,
  WA_RJKIF_S_REF_ORDER_ITEM-GPVERM, sy-vline,
  WA_RJKIF_S_REF_ORDER_ITEM-WERBTRAEG, sy-vline,
  WA_RJKIF_S_REF_ORDER_ITEM-KONDA, sy-vline,
  WA_RJKIF_S_REF_ORDER_ITEM-PERFK, sy-vline,
  WA_RJKIF_S_REF_ORDER_ITEM-FKPER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKIF_S_REF_ORDER_ITEM 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_RJKIF_S_REF_ORDER_ITEM 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_RJKIF_S_REF_ORDER_ITEM INTO WA_RJKIF_S_REF_ORDER_ITEM.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field ETMEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKIF_S_REF_ORDER_ITEM-ETMEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKIF_S_REF_ORDER_ITEM-ETMEINS.
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_RJKIF_S_REF_ORDER_ITEM_STR, 
GPNR_RG TYPE STRING,
GPNR_RE TYPE STRING,
GPNR_WE TYPE STRING,
GUELTIGVON TYPE STRING,
GUELTIGBIS TYPE STRING,
MATNRWERB TYPE STRING,
GPVERM TYPE STRING,
WERBTRAEG TYPE STRING,
KONDA TYPE STRING,
PERFK TYPE STRING,
FKPER TYPE STRING,
RCODE TYPE STRING,
DUEDAY TYPE STRING,
ETMENGE TYPE STRING,
ETMEINS TYPE STRING,
ZLSCH TYPE STRING,
BEZUGGRD TYPE STRING,
BKVID TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
IBAN TYPE STRING,
BKONT TYPE STRING,
XEZER TYPE STRING,
CCARD_ID TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
DATBI TYPE STRING,
CCNAME TYPE STRING,
AUDAT TYPE STRING,
AUTIM TYPE STRING,
AUNUM TYPE STRING,
AUTRA TYPE STRING,
ISM_CVVAL TYPE STRING,
ISM_CVVCT TYPE STRING,
ISM_CVVST TYPE STRING,
ISM_RCCVV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKIF_S_REF_ORDER_ITEM_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_RJKIF_S_REF_ORDER_ITEM_STR-GPNR_RG sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-GPNR_RE sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-GPNR_WE sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-GUELTIGVON sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-GUELTIGBIS sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-MATNRWERB sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-GPVERM sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-WERBTRAEG sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-KONDA sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-PERFK sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-FKPER sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-RCODE sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-DUEDAY sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-ETMENGE sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-ETMEINS sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-ZLSCH sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-BEZUGGRD sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-BKVID sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-BANKS sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-BANKL sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-BANKN sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-IBAN sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-BKONT sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-XEZER sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-CCARD_ID sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-CCINS sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-CCNUM sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-DATBI sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-CCNAME sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-AUDAT sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-AUTIM sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-AUNUM sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-AUTRA sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-ISM_CVVAL sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-ISM_CVVCT sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-ISM_CVVST sy-vline 
WA_RJKIF_S_REF_ORDER_ITEM_STR-ISM_RCCVV sy-vline      INTO ld_text SEPARATED BY SPACE.

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