ABAP Select data from SAP table RJKIF_S_ITEMWBZ 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_ITEMWBZ 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_ITEMWBZ. 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_ITEMWBZ 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_ITEMWBZ TYPE STANDARD TABLE OF RJKIF_S_ITEMWBZ,
      WA_RJKIF_S_ITEMWBZ TYPE RJKIF_S_ITEMWBZ,
      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_ITEMWBZ> TYPE RJKIF_S_ITEMWBZ.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKIF_S_ITEMWBZ
*  INTO TABLE @DATA(IT_RJKIF_S_ITEMWBZ2).
*--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_ITEMWBZ INDEX 1 INTO DATA(WA_RJKIF_S_ITEMWBZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKIF_S_ITEMWBZ>-SATZART = 1.
<RJKIF_S_ITEMWBZ>-REFBELEG = 1.
<RJKIF_S_ITEMWBZ>-VBELN = 1.
<RJKIF_S_ITEMWBZ>-WBZSATZART = 1.
<RJKIF_S_ITEMWBZ>-WBZVORGART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKIF_S_ITEMWBZ-WERBKZSCHL, sy-vline,
  WA_RJKIF_S_ITEMWBZ-WBZABOKUNR, sy-vline,
  WA_RJKIF_S_ITEMWBZ-XWBZRUECKU, sy-vline,
  WA_RJKIF_S_ITEMWBZ-WBZKUNNR, sy-vline,
  WA_RJKIF_S_ITEMWBZ-VERTRKENNZ, sy-vline,
  WA_RJKIF_S_ITEMWBZ-WBZTERMIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKIF_S_ITEMWBZ 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_ITEMWBZ 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_ITEMWBZ INTO WA_RJKIF_S_ITEMWBZ.


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

*Conversion exit JKWBZ, internal->external for field WBZABOKUNR
CALL FUNCTION 'CONVERSION_EXIT_JKWBZ_OUTPUT'
  EXPORTING
    input =                      WA_RJKIF_S_ITEMWBZ-WBZABOKUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKIF_S_ITEMWBZ-WBZABOKUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit JKWBZ, internal->external for field WBZKUNNR
CALL FUNCTION 'CONVERSION_EXIT_JKWBZ_OUTPUT'
  EXPORTING
    input =                      WA_RJKIF_S_ITEMWBZ-WBZKUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKIF_S_ITEMWBZ-WBZKUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit JKWBZ, internal->external for field VERTRKENNZ
CALL FUNCTION 'CONVERSION_EXIT_JKWBZ_OUTPUT'
  EXPORTING
    input =                      WA_RJKIF_S_ITEMWBZ-VERTRKENNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKIF_S_ITEMWBZ-VERTRKENNZ.
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_ITEMWBZ_STR, 
SATZART TYPE STRING,
REFBELEG TYPE STRING,
VBELN TYPE STRING,
WBZSATZART TYPE STRING,
WBZVORGART TYPE STRING,
WERBKZSCHL TYPE STRING,
WBZABOKUNR TYPE STRING,
XWBZRUECKU TYPE STRING,
WBZKUNNR TYPE STRING,
VERTRKENNZ TYPE STRING,
WBZTERMIN TYPE STRING,
WBZVERTRETER TYPE STRING,
XWBZRUECKK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKIF_S_ITEMWBZ_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_ITEMWBZ_STR-SATZART sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-REFBELEG sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-VBELN sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-WBZSATZART sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-WBZVORGART sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-WERBKZSCHL sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-WBZABOKUNR sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-XWBZRUECKU sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-WBZKUNNR sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-VERTRKENNZ sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-WBZTERMIN sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-WBZVERTRETER sy-vline 
WA_RJKIF_S_ITEMWBZ_STR-XWBZRUECKK sy-vline      INTO ld_text SEPARATED BY SPACE.

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