ABAP Select data from SAP table CRMS4S_SERVICEDOCUMENTITEMNODE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRMS4S_SERVICEDOCUMENTITEMNODE 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 CRMS4S_SERVICEDOCUMENTITEMNODE. 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 CRMS4S_SERVICEDOCUMENTITEMNODE 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_CRMS4S_SERVICEDOCUMENTITEMNODE TYPE STANDARD TABLE OF CRMS4S_SERVICEDOCUMENTITEMNODE,
      WA_CRMS4S_SERVICEDOCUMENTITEMNODE TYPE CRMS4S_SERVICEDOCUMENTITEMNODE,
      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: <CRMS4S_SERVICEDOCUMENTITEMNODE> TYPE CRMS4S_SERVICEDOCUMENTITEMNODE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CRMS4S_SERVICEDOCUMENTITEMNODE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CRMS4S_SERVICEDOCUMENTITEMNODE
  INTO TABLE IT_CRMS4S_SERVICEDOCUMENTITEMNODE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMS4S_SERVICEDOCUMENTITEMNODE
*  INTO TABLE @DATA(IT_CRMS4S_SERVICEDOCUMENTITEMNODE2).
*--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_CRMS4S_SERVICEDOCUMENTITEMNODE INDEX 1 INTO DATA(WA_CRMS4S_SERVICEDOCUMENTITEMNODE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CRMS4S_SERVICEDOCUMENTITEMNODE ASSIGNING <CRMS4S_SERVICEDOCUMENTITEMNODE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMS4S_SERVICEDOCUMENTITEMNODE>-ORIGINALLYREQUESTEDPRODUCT = 1.
<CRMS4S_SERVICEDOCUMENTITEMNODE>-SERVICEDOCITEMCATEGORY = 1.
<CRMS4S_SERVICEDOCUMENTITEMNODE>-SERVICEDOCUMENT = 1.
<CRMS4S_SERVICEDOCUMENTITEMNODE>-SERVICEDOCUMENTITEMUUID = 1.
<CRMS4S_SERVICEDOCUMENTITEMNODE>-SERVICEDOCUMENTITEM = 1.

ENDLOOP.

LOOP AT IT_CRMS4S_SERVICEDOCUMENTITEMNODE INTO WA_CRMS4S_SERVICEDOCUMENTITEMNODE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEDOCUMENTUUID, sy-vline,
  WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEOBJECTTYPE, sy-vline,
  WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEDOCUMENTITEMOBJECTTYPE, sy-vline,
  WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEDOCUMENTITEMDESCRIPTION, sy-vline,
  WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEDOCUMENTITEMQUANTITY, sy-vline,
  WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEDOCITEMQUANTITYUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMS4S_SERVICEDOCUMENTITEMNODE 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_CRMS4S_SERVICEDOCUMENTITEMNODE 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_CRMS4S_SERVICEDOCUMENTITEMNODE INTO WA_CRMS4S_SERVICEDOCUMENTITEMNODE.


*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 SERVICEDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SERVICEDOCITEMQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEDOCITEMQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_SERVICEDOCUMENTITEMNODE-SERVICEDOCITEMQUANTITYUNIT.
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_CRMS4S_SERVICEDOCUMENTITEMNODE_STR, 
ORIGINALLYREQUESTEDPRODUCT TYPE STRING,
SERVICEDOCITEMCATEGORY TYPE STRING,
SERVICEDOCUMENT TYPE STRING,
SERVICEDOCUMENTITEMUUID TYPE STRING,
SERVICEDOCUMENTITEM TYPE STRING,
SERVICEDOCUMENTUUID TYPE STRING,
SERVICEOBJECTTYPE TYPE STRING,
SERVICEDOCUMENTITEMOBJECTTYPE TYPE STRING,
SERVICEDOCUMENTITEMDESCRIPTION TYPE STRING,
SERVICEDOCUMENTITEMQUANTITY TYPE STRING,
SERVICEDOCITEMQUANTITYUNIT TYPE STRING,
SERVICEDOCITEMGROSSAMOUNT TYPE STRING,
SERVICEDOCUMENTITEMNETAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
SERVICEDOCITEMREJECTIONREASON TYPE STRING,
SERVICEDOCUMENTITEMISREJECTED TYPE STRING,
SERVICEDOCUMENTITEMSTATUS TYPE STRING,
SERVICEDOCUMENTITEMPARENTID TYPE STRING,
SERV_I_DUMMY_PS TYPE STRING,
SERV_I_DUMMY_TR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMS4S_SERVICEDOCUMENTITEMNODE_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_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-ORIGINALLYREQUESTEDPRODUCT sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCITEMCATEGORY sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENT sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTITEMUUID sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTITEM sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTUUID sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEOBJECTTYPE sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTITEMOBJECTTYPE sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTITEMDESCRIPTION sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTITEMQUANTITY sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCITEMQUANTITYUNIT sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCITEMGROSSAMOUNT sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTITEMNETAMOUNT sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-TRANSACTIONCURRENCY sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCITEMREJECTIONREASON sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTITEMISREJECTED sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTITEMSTATUS sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERVICEDOCUMENTITEMPARENTID sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERV_I_DUMMY_PS sy-vline 
WA_CRMS4S_SERVICEDOCUMENTITEMNODE_STR-SERV_I_DUMMY_TR sy-vline      INTO ld_text SEPARATED BY SPACE.

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