ABAP Select data from SAP table RFKORDJ3_S_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFKORDJ3_S_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 RFKORDJ3_S_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 RFKORDJ3_S_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_RFKORDJ3_S_ITEM TYPE STANDARD TABLE OF RFKORDJ3_S_ITEM,
      WA_RFKORDJ3_S_ITEM TYPE RFKORDJ3_S_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: <RFKORDJ3_S_ITEM> TYPE RFKORDJ3_S_ITEM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFKORDJ3_S_ITEM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFKORDJ3_S_ITEM
  INTO TABLE IT_RFKORDJ3_S_ITEM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKORDJ3_S_ITEM
*  INTO TABLE @DATA(IT_RFKORDJ3_S_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_RFKORDJ3_S_ITEM INDEX 1 INTO DATA(WA_RFKORDJ3_S_ITEM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFKORDJ3_S_ITEM ASSIGNING <RFKORDJ3_S_ITEM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKORDJ3_S_ITEM>-DOCNUM1 = 1.
<RFKORDJ3_S_ITEM>-DOCDAT1 = 1.
<RFKORDJ3_S_ITEM>-TRAN1 = 1.
<RFKORDJ3_S_ITEM>-CURK1 = 1.
<RFKORDJ3_S_ITEM>-AMT1 = 1.

ENDLOOP.

LOOP AT IT_RFKORDJ3_S_ITEM INTO WA_RFKORDJ3_S_ITEM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKORDJ3_S_ITEM-PYMT, sy-vline,
  WA_RFKORDJ3_S_ITEM-AREARS, sy-vline,
  WA_RFKORDJ3_S_ITEM-AUGBT, sy-vline,
  WA_RFKORDJ3_S_ITEM-DOCNUM2, sy-vline,
  WA_RFKORDJ3_S_ITEM-DOCDAT2, sy-vline,
  WA_RFKORDJ3_S_ITEM-TRAN2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKORDJ3_S_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_RFKORDJ3_S_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_RFKORDJ3_S_ITEM INTO WA_RFKORDJ3_S_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 AC132, internal->external for field AMT1
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKORDJ3_S_ITEM-AMT1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKORDJ3_S_ITEM-AMT1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field PYMT
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKORDJ3_S_ITEM-PYMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKORDJ3_S_ITEM-PYMT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field AREARS
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKORDJ3_S_ITEM-AREARS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKORDJ3_S_ITEM-AREARS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field AUGBT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFKORDJ3_S_ITEM-AUGBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKORDJ3_S_ITEM-AUGBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field AMT2
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKORDJ3_S_ITEM-AMT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKORDJ3_S_ITEM-AMT2.
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_RFKORDJ3_S_ITEM_STR, 
DOCNUM1 TYPE STRING,
DOCDAT1 TYPE STRING,
TRAN1 TYPE STRING,
CURK1 TYPE STRING,
AMT1 TYPE STRING,
PYMT TYPE STRING,
AREARS TYPE STRING,
AUGBT TYPE STRING,
DOCNUM2 TYPE STRING,
DOCDAT2 TYPE STRING,
TRAN2 TYPE STRING,
CURK2 TYPE STRING,
AMT2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKORDJ3_S_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_RFKORDJ3_S_ITEM_STR-DOCNUM1 sy-vline 
WA_RFKORDJ3_S_ITEM_STR-DOCDAT1 sy-vline 
WA_RFKORDJ3_S_ITEM_STR-TRAN1 sy-vline 
WA_RFKORDJ3_S_ITEM_STR-CURK1 sy-vline 
WA_RFKORDJ3_S_ITEM_STR-AMT1 sy-vline 
WA_RFKORDJ3_S_ITEM_STR-PYMT sy-vline 
WA_RFKORDJ3_S_ITEM_STR-AREARS sy-vline 
WA_RFKORDJ3_S_ITEM_STR-AUGBT sy-vline 
WA_RFKORDJ3_S_ITEM_STR-DOCNUM2 sy-vline 
WA_RFKORDJ3_S_ITEM_STR-DOCDAT2 sy-vline 
WA_RFKORDJ3_S_ITEM_STR-TRAN2 sy-vline 
WA_RFKORDJ3_S_ITEM_STR-CURK2 sy-vline 
WA_RFKORDJ3_S_ITEM_STR-AMT2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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