ABAP Select data from SAP table REBI_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REBI_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 REBI_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 REBI_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_REBI_ITEM TYPE STANDARD TABLE OF REBI_ITEM,
      WA_REBI_ITEM TYPE REBI_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: <REBI_ITEM> TYPE REBI_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REBI_ITEM
*  INTO TABLE @DATA(IT_REBI_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_REBI_ITEM INDEX 1 INTO DATA(WA_REBI_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REBI_ITEM>-KUNAG = 1.
<REBI_ITEM>-MATNR = 1.
<REBI_ITEM>-SELKZ = 1.
<REBI_ITEM>-STATUS = 1.
<REBI_ITEM>-FKDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REBI_ITEM-PRSDT, sy-vline,
  WA_REBI_ITEM-WAERK, sy-vline,
  WA_REBI_ITEM-VALUE_NEW, sy-vline,
  WA_REBI_ITEM-VALUE_DIFF, sy-vline,
  WA_REBI_ITEM-FKART, sy-vline,
  WA_REBI_ITEM-VBELN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REBI_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_REBI_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_REBI_ITEM INTO WA_REBI_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 KUNAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REBI_ITEM-KUNAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REBI_ITEM-KUNAG.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REBI_ITEM-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REBI_ITEM-VBELN.
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_REBI_ITEM_STR, 
KUNAG TYPE STRING,
MATNR TYPE STRING,
SELKZ TYPE STRING,
STATUS TYPE STRING,
FKDAT TYPE STRING,
PRSDT TYPE STRING,
WAERK TYPE STRING,
VALUE_NEW TYPE STRING,
VALUE_DIFF TYPE STRING,
FKART TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
AUGRU TYPE STRING,
VALUE TYPE STRING,
FKIMG TYPE STRING,
ABGRU TYPE STRING,
FAKSP TYPE STRING,
MESSAGE TYPE STRING,
VBTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REBI_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_REBI_ITEM_STR-KUNAG sy-vline 
WA_REBI_ITEM_STR-MATNR sy-vline 
WA_REBI_ITEM_STR-SELKZ sy-vline 
WA_REBI_ITEM_STR-STATUS sy-vline 
WA_REBI_ITEM_STR-FKDAT sy-vline 
WA_REBI_ITEM_STR-PRSDT sy-vline 
WA_REBI_ITEM_STR-WAERK sy-vline 
WA_REBI_ITEM_STR-VALUE_NEW sy-vline 
WA_REBI_ITEM_STR-VALUE_DIFF sy-vline 
WA_REBI_ITEM_STR-FKART sy-vline 
WA_REBI_ITEM_STR-VBELN sy-vline 
WA_REBI_ITEM_STR-POSNR sy-vline 
WA_REBI_ITEM_STR-AUGRU sy-vline 
WA_REBI_ITEM_STR-VALUE sy-vline 
WA_REBI_ITEM_STR-FKIMG sy-vline 
WA_REBI_ITEM_STR-ABGRU sy-vline 
WA_REBI_ITEM_STR-FAKSP sy-vline 
WA_REBI_ITEM_STR-MESSAGE sy-vline 
WA_REBI_ITEM_STR-VBTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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