ABAP Select data from SAP table CRMS4S_MIG_SC_ITEM_EXTERN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRMS4S_MIG_SC_ITEM_EXTERN 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_MIG_SC_ITEM_EXTERN. 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_MIG_SC_ITEM_EXTERN 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_MIG_SC_ITEM_EXTERN TYPE STANDARD TABLE OF CRMS4S_MIG_SC_ITEM_EXTERN,
      WA_CRMS4S_MIG_SC_ITEM_EXTERN TYPE CRMS4S_MIG_SC_ITEM_EXTERN,
      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_MIG_SC_ITEM_EXTERN> TYPE CRMS4S_MIG_SC_ITEM_EXTERN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CRMS4S_MIG_SC_ITEM_EXTERN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CRMS4S_MIG_SC_ITEM_EXTERN
  INTO TABLE IT_CRMS4S_MIG_SC_ITEM_EXTERN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMS4S_MIG_SC_ITEM_EXTERN
*  INTO TABLE @DATA(IT_CRMS4S_MIG_SC_ITEM_EXTERN2).
*--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_MIG_SC_ITEM_EXTERN INDEX 1 INTO DATA(WA_CRMS4S_MIG_SC_ITEM_EXTERN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CRMS4S_MIG_SC_ITEM_EXTERN ASSIGNING <CRMS4S_MIG_SC_ITEM_EXTERN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMS4S_MIG_SC_ITEM_EXTERN>-SERVICECONTRACTITEM = 1.
<CRMS4S_MIG_SC_ITEM_EXTERN>-SERVICECONTRACTITEMCATEGORY = 1.
<CRMS4S_MIG_SC_ITEM_EXTERN>-SERVICEORDERITEMDESCRIPTION = 1.
<CRMS4S_MIG_SC_ITEM_EXTERN>-LANGUAGE = 1.
<CRMS4S_MIG_SC_ITEM_EXTERN>-PRODUCT = 1.

ENDLOOP.

LOOP AT IT_CRMS4S_MIG_SC_ITEM_EXTERN INTO WA_CRMS4S_MIG_SC_ITEM_EXTERN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMS4S_MIG_SC_ITEM_EXTERN-QUANTITY, sy-vline,
  WA_CRMS4S_MIG_SC_ITEM_EXTERN-QUANTITYUNIT, sy-vline,
  WA_CRMS4S_MIG_SC_ITEM_EXTERN-QUANTITYISOUNIT, sy-vline,
  WA_CRMS4S_MIG_SC_ITEM_EXTERN-SOLDTOPARTY, sy-vline,
  WA_CRMS4S_MIG_SC_ITEM_EXTERN-SHIPTOPARTY, sy-vline,
  WA_CRMS4S_MIG_SC_ITEM_EXTERN-BILLTOPARTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMS4S_MIG_SC_ITEM_EXTERN 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_MIG_SC_ITEM_EXTERN 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_MIG_SC_ITEM_EXTERN INTO WA_CRMS4S_MIG_SC_ITEM_EXTERN.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_MIG_SC_ITEM_EXTERN-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_MIG_SC_ITEM_EXTERN-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_MIG_SC_ITEM_EXTERN-QUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_MIG_SC_ITEM_EXTERN-QUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOLDTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_MIG_SC_ITEM_EXTERN-SOLDTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_MIG_SC_ITEM_EXTERN-SOLDTOPARTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHIPTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_MIG_SC_ITEM_EXTERN-SHIPTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_MIG_SC_ITEM_EXTERN-SHIPTOPARTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BILLTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_MIG_SC_ITEM_EXTERN-BILLTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_MIG_SC_ITEM_EXTERN-BILLTOPARTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PAYERPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_MIG_SC_ITEM_EXTERN-PAYERPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_MIG_SC_ITEM_EXTERN-PAYERPARTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PERSONRESPONSIBLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_MIG_SC_ITEM_EXTERN-PERSONRESPONSIBLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_MIG_SC_ITEM_EXTERN-PERSONRESPONSIBLE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFERENCESERVICECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMS4S_MIG_SC_ITEM_EXTERN-REFERENCESERVICECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMS4S_MIG_SC_ITEM_EXTERN-REFERENCESERVICECONTRACT.
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_MIG_SC_ITEM_EXTERN_STR, 
SERVICECONTRACTITEM TYPE STRING,
SERVICECONTRACTITEMCATEGORY TYPE STRING,
SERVICEORDERITEMDESCRIPTION TYPE STRING,
LANGUAGE TYPE STRING,
PRODUCT TYPE STRING,
QUANTITY TYPE STRING,
QUANTITYUNIT TYPE STRING,
QUANTITYISOUNIT TYPE STRING,
SOLDTOPARTY TYPE STRING,
SHIPTOPARTY TYPE STRING,
BILLTOPARTY TYPE STRING,
PAYERPARTY TYPE STRING,
PERSONRESPONSIBLE TYPE STRING,
REFERENCESERVICECONTRACT TYPE STRING,
REFERENCESERVICECONTRACTITEM TYPE STRING,
SERVICECONTRITEMENDDATETIME TYPE STRING,
SERVICECONTRITEMSTARTDATETIME TYPE STRING,
BILLINGPLANBILLINGDATERULE TYPE STRING,
SETTLEMENTPERIODRULE TYPE STRING,
SRVCCONTRITEMRNWLDURATION TYPE STRING,
SRVCCONTRITEMRNWLDURATIONUNIT TYPE STRING,
SRVCCONTRITEMRNWLDURNISOUNIT TYPE STRING,
SRVCCONTRITEMEXTENSIONDURATION TYPE STRING,
SRVCCONTRITEMEXTNDURATIONUNIT TYPE STRING,
SRVCCONTRITEMEXTNDURNISOUNIT TYPE STRING,
SERV_I_DUMMY_PS TYPE STRING,
SC_ITM_TEXT TYPE STRING,
SC_ITM_PRICE_ELEM TYPE STRING,
SC_ITM_OBJ_LIST TYPE STRING,
SC_ITM_PRD_LIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMS4S_MIG_SC_ITEM_EXTERN_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_MIG_SC_ITEM_EXTERN_STR-SERVICECONTRACTITEM sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SERVICECONTRACTITEMCATEGORY sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SERVICEORDERITEMDESCRIPTION sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-LANGUAGE sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-PRODUCT sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-QUANTITY sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-QUANTITYUNIT sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-QUANTITYISOUNIT sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SOLDTOPARTY sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SHIPTOPARTY sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-BILLTOPARTY sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-PAYERPARTY sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-PERSONRESPONSIBLE sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-REFERENCESERVICECONTRACT sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-REFERENCESERVICECONTRACTITEM sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SERVICECONTRITEMENDDATETIME sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SERVICECONTRITEMSTARTDATETIME sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-BILLINGPLANBILLINGDATERULE sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SETTLEMENTPERIODRULE sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SRVCCONTRITEMRNWLDURATION sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SRVCCONTRITEMRNWLDURATIONUNIT sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SRVCCONTRITEMRNWLDURNISOUNIT sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SRVCCONTRITEMEXTENSIONDURATION sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SRVCCONTRITEMEXTNDURATIONUNIT sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SRVCCONTRITEMEXTNDURNISOUNIT sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SERV_I_DUMMY_PS sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SC_ITM_TEXT sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SC_ITM_PRICE_ELEM sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SC_ITM_OBJ_LIST sy-vline 
WA_CRMS4S_MIG_SC_ITEM_EXTERN_STR-SC_ITM_PRD_LIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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