ABAP Select data from SAP table RFKIP_ITMALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKIP_ITMALV
*  INTO TABLE @DATA(IT_RFKIP_ITMALV2).
*--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_RFKIP_ITMALV INDEX 1 INTO DATA(WA_RFKIP_ITMALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKIP_ITMALV>-STAIP_ICON = 1.
<RFKIP_ITMALV>-MANDT = 1.
<RFKIP_ITMALV>-PDKEY = 1.
<RFKIP_ITMALV>-OPBEL = 1.
<RFKIP_ITMALV>-OPUPW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKIP_ITMALV-OPUPK, sy-vline,
  WA_RFKIP_ITMALV-OPUPZ, sy-vline,
  WA_RFKIP_ITMALV-GPART, sy-vline,
  WA_RFKIP_ITMALV-VKONT, sy-vline,
  WA_RFKIP_ITMALV-VTREF, sy-vline,
  WA_RFKIP_ITMALV-SUBAP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKIP_ITMALV 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_RFKIP_ITMALV 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_RFKIP_ITMALV INTO WA_RFKIP_ITMALV.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VKONV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKIP_ITMALV-VKONV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKIP_ITMALV-VKONV.
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_RFKIP_ITMALV_STR, 
STAIP_ICON TYPE STRING,
MANDT TYPE STRING,
PDKEY TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
SUBAP TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
BUKRS TYPE STRING,
CRDAT TYPE STRING,
CRTIM TYPE STRING,
XFREE TYPE STRING,
GSBER TYPE STRING,
ORIWA TYPE STRING,
ORIBT TYPE STRING,
SKTOW TYPE STRING,
XDELE TYPE STRING,
GPARV TYPE STRING,
VKONV TYPE STRING,
STAIP TYPE STRING,
XFINI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKIP_ITMALV_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_RFKIP_ITMALV_STR-STAIP_ICON sy-vline 
WA_RFKIP_ITMALV_STR-MANDT sy-vline 
WA_RFKIP_ITMALV_STR-PDKEY sy-vline 
WA_RFKIP_ITMALV_STR-OPBEL sy-vline 
WA_RFKIP_ITMALV_STR-OPUPW sy-vline 
WA_RFKIP_ITMALV_STR-OPUPK sy-vline 
WA_RFKIP_ITMALV_STR-OPUPZ sy-vline 
WA_RFKIP_ITMALV_STR-GPART sy-vline 
WA_RFKIP_ITMALV_STR-VKONT sy-vline 
WA_RFKIP_ITMALV_STR-VTREF sy-vline 
WA_RFKIP_ITMALV_STR-SUBAP sy-vline 
WA_RFKIP_ITMALV_STR-BETRW sy-vline 
WA_RFKIP_ITMALV_STR-WAERS sy-vline 
WA_RFKIP_ITMALV_STR-BUKRS sy-vline 
WA_RFKIP_ITMALV_STR-CRDAT sy-vline 
WA_RFKIP_ITMALV_STR-CRTIM sy-vline 
WA_RFKIP_ITMALV_STR-XFREE sy-vline 
WA_RFKIP_ITMALV_STR-GSBER sy-vline 
WA_RFKIP_ITMALV_STR-ORIWA sy-vline 
WA_RFKIP_ITMALV_STR-ORIBT sy-vline 
WA_RFKIP_ITMALV_STR-SKTOW sy-vline 
WA_RFKIP_ITMALV_STR-XDELE sy-vline 
WA_RFKIP_ITMALV_STR-GPARV sy-vline 
WA_RFKIP_ITMALV_STR-VKONV sy-vline 
WA_RFKIP_ITMALV_STR-STAIP sy-vline 
WA_RFKIP_ITMALV_STR-XFINI sy-vline      INTO ld_text SEPARATED BY SPACE.

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