ABAP Select data from SAP table IVCM_ICODOCI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IVCM_ICODOCI
*  INTO TABLE @DATA(IT_IVCM_ICODOCI2).
*--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_IVCM_ICODOCI INDEX 1 INTO DATA(WA_IVCM_ICODOCI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IVCM_ICODOCI>-MANDT = 1.
<IVCM_ICODOCI>-VALUECHAINSTEPINSTANCEUUID = 1.
<IVCM_ICODOCI>-VALUECHAINDOCUMENTITEMORIGIN = 1.
<IVCM_ICODOCI>-VALUECHAINBUSINESSOBJECT = 1.
<IVCM_ICODOCI>-VALUECHAINBUSINESSOBJECTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IVCM_ICODOCI-VALUECHAINSTEPBUSINESSOBJECT, sy-vline,
  WA_IVCM_ICODOCI-VALUECHAINITEMUUID, sy-vline,
  WA_IVCM_ICODOCI-VALUECHAININSTANCEUUID, sy-vline,
  WA_IVCM_ICODOCI-VALUECHAINSTEPPREDECESSORUUID, sy-vline,
  WA_IVCM_ICODOCI-VALUECHAINPREDECESSORBUSOBJ, sy-vline,
  WA_IVCM_ICODOCI-VALUECHAINPRDCSSRBUSOBJITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IVCM_ICODOCI 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_IVCM_ICODOCI 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_IVCM_ICODOCI INTO WA_IVCM_ICODOCI.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IVCM_ICODOCI_STR, 
MANDT TYPE STRING,
VALUECHAINSTEPINSTANCEUUID TYPE STRING,
VALUECHAINDOCUMENTITEMORIGIN TYPE STRING,
VALUECHAINBUSINESSOBJECT TYPE STRING,
VALUECHAINBUSINESSOBJECTITEM TYPE STRING,
VALUECHAINSTEPBUSINESSOBJECT TYPE STRING,
VALUECHAINITEMUUID TYPE STRING,
VALUECHAININSTANCEUUID TYPE STRING,
VALUECHAINSTEPPREDECESSORUUID TYPE STRING,
VALUECHAINPREDECESSORBUSOBJ TYPE STRING,
VALUECHAINPRDCSSRBUSOBJITEM TYPE STRING,
VALUECHAINPREDECESSORSTPBUSOBJ TYPE STRING,
INTCOVALUECHAINDOCITMSTATUS TYPE STRING,
VALUECHAINBUSOBJITEMPROCSTAT TYPE STRING,
ISCANCELLED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IVCM_ICODOCI_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_IVCM_ICODOCI_STR-MANDT sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINSTEPINSTANCEUUID sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINDOCUMENTITEMORIGIN sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINBUSINESSOBJECT sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINBUSINESSOBJECTITEM sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINSTEPBUSINESSOBJECT sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINITEMUUID sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAININSTANCEUUID sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINSTEPPREDECESSORUUID sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINPREDECESSORBUSOBJ sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINPRDCSSRBUSOBJITEM sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINPREDECESSORSTPBUSOBJ sy-vline 
WA_IVCM_ICODOCI_STR-INTCOVALUECHAINDOCITMSTATUS sy-vline 
WA_IVCM_ICODOCI_STR-VALUECHAINBUSOBJITEMPROCSTAT sy-vline 
WA_IVCM_ICODOCI_STR-ISCANCELLED sy-vline      INTO ld_text SEPARATED BY SPACE.

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