ABAP Select data from SAP table /SCMB/DM_COMPONENT_STR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCMB/DM_COMPONENT_STR 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 /SCMB/DM_COMPONENT_STR. 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 /SCMB/DM_COMPONENT_STR 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_/SCMB/DM_COMPONENT_STR TYPE STANDARD TABLE OF /SCMB/DM_COMPONENT_STR,
      WA_/SCMB/DM_COMPONENT_STR TYPE /SCMB/DM_COMPONENT_STR,
      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: </SCMB/DM_COMPONENT_STR> TYPE /SCMB/DM_COMPONENT_STR.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCMB/DM_COMPONENT_STR
  INTO TABLE IT_/SCMB/DM_COMPONENT_STR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCMB/DM_COMPONENT_STR
*  INTO TABLE @DATA(IT_/SCMB/DM_COMPONENT_STR2).
*--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_/SCMB/DM_COMPONENT_STR INDEX 1 INTO DATA(WA_/SCMB/DM_COMPONENT_STR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCMB/DM_COMPONENT_STR ASSIGNING </SCMB/DM_COMPONENT_STR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCMB/DM_COMPONENT_STR>-GUID = 1.
</SCMB/DM_COMPONENT_STR>-ID = 1.
</SCMB/DM_COMPONENT_STR>-PRODUCT = 1.
</SCMB/DM_COMPONENT_STR>-GUID = 1.
</SCMB/DM_COMPONENT_STR>-ID = 1.

ENDLOOP.

LOOP AT IT_/SCMB/DM_COMPONENT_STR INTO WA_/SCMB/DM_COMPONENT_STR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCMB/DM_COMPONENT_STR-GTIN, sy-vline,
  WA_/SCMB/DM_COMPONENT_STR-GTIN_QUANTITY_UNIT, sy-vline,
  WA_/SCMB/DM_COMPONENT_STR-GTIN_IND, sy-vline,
  WA_/SCMB/DM_COMPONENT_STR-BASE_QUANTITY_UNIT, sy-vline,
  WA_/SCMB/DM_COMPONENT_STR-PARTY_ID, sy-vline,
  WA_/SCMB/DM_COMPONENT_STR-PARTY_GUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCMB/DM_COMPONENT_STR 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_/SCMB/DM_COMPONENT_STR 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_/SCMB/DM_COMPONENT_STR INTO WA_/SCMB/DM_COMPONENT_STR.


*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 CUNIT, internal->external for field GTIN_QUANTITY_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCMB/DM_COMPONENT_STR-GTIN_QUANTITY_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMB/DM_COMPONENT_STR-GTIN_QUANTITY_UNIT.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field RECEIVED_QUAN_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCMB/DM_COMPONENT_STR-RECEIVED_QUAN_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMB/DM_COMPONENT_STR-RECEIVED_QUAN_UNIT.
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_/SCMB/DM_COMPONENT_STR_STR, 
GUID TYPE STRING,
ID TYPE STRING,
PRODUCT TYPE STRING,
GUID TYPE STRING,
ID TYPE STRING,
GTIN TYPE STRING,
GTIN_QUANTITY_UNIT TYPE STRING,
GTIN_IND TYPE STRING,
BASE_QUANTITY_UNIT TYPE STRING,
PARTY_ID TYPE STRING,
PARTY_GUID TYPE STRING,
PRODUCT_ID TYPE STRING,
PRODUCT_DESCRIPTION TYPE STRING,
DESCRIPTION TYPE STRING,
DISCONTINUE_INDICATOR TYPE STRING,
PACK_COUNT_QUANTITY TYPE STRING,
PACK_COUNT_QUANTITY_UNIT TYPE STRING,
CONSIGNMENT_INDICATOR TYPE STRING,
MANUFACTURING_DATE TYPE STRING,
COUNTRY_OF_ORIGIN TYPE STRING,
BESTBEFORE_DATE TYPE STRING,
CHANGE_NUMBER TYPE STRING,
REVISION_LEVEL TYPE STRING,
BATCH_ID TYPE STRING,
PRTBATCHID TYPE STRING,
PROD_STATUS TYPE STRING,
ALTERNATIVE_NUMBER TYPE STRING,
PROD_INSTANCE TYPE STRING,
PROD_INSTANCE_ID TYPE STRING,
CLASS_REF TYPE STRING,
REFOBJTYPE TYPE STRING,
REFOBJID TYPE STRING,
APPL_OWNER TYPE STRING,
REFOBJTYPE TYPE STRING,
REFOBJID TYPE STRING,
QUANTITY TYPE STRING,
QUANTITY_UNIT TYPE STRING,
RECEIVED_QUAN_UNIT TYPE STRING,
CMP_UMREZ TYPE STRING,
CMP_UMREN TYPE STRING,
APPROVAL_STATUS TYPE STRING,
NOTE_DETAILS TYPE STRING,
BATCH_ID TYPE STRING,
COMP_REQ_DATE TYPE STRING,
CONTROL_UI TYPE STRING,
COMPONENT_INDICATOR TYPE STRING,
TLB_INDICATOR TYPE STRING,
PIID_CREATE_IND TYPE STRING,
CONFIG_FLAG TYPE STRING,
PRICE_CONF TYPE STRING,
MPN_CONF TYPE STRING,
CHG_MODE TYPE STRING,
NOTE_IND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCMB/DM_COMPONENT_STR_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_/SCMB/DM_COMPONENT_STR_STR-GUID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-ID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PRODUCT sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-GUID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-ID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-GTIN sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-GTIN_QUANTITY_UNIT sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-GTIN_IND sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-BASE_QUANTITY_UNIT sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PARTY_ID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PARTY_GUID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PRODUCT_ID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PRODUCT_DESCRIPTION sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-DESCRIPTION sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-DISCONTINUE_INDICATOR sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PACK_COUNT_QUANTITY sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PACK_COUNT_QUANTITY_UNIT sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-CONSIGNMENT_INDICATOR sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-MANUFACTURING_DATE sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-COUNTRY_OF_ORIGIN sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-BESTBEFORE_DATE sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-CHANGE_NUMBER sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-REVISION_LEVEL sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-BATCH_ID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PRTBATCHID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PROD_STATUS sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-ALTERNATIVE_NUMBER sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PROD_INSTANCE sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PROD_INSTANCE_ID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-CLASS_REF sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-REFOBJTYPE sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-REFOBJID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-APPL_OWNER sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-REFOBJTYPE sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-REFOBJID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-QUANTITY sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-QUANTITY_UNIT sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-RECEIVED_QUAN_UNIT sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-CMP_UMREZ sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-CMP_UMREN sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-APPROVAL_STATUS sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-NOTE_DETAILS sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-BATCH_ID sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-COMP_REQ_DATE sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-CONTROL_UI sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-COMPONENT_INDICATOR sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-TLB_INDICATOR sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PIID_CREATE_IND sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-CONFIG_FLAG sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-PRICE_CONF sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-MPN_CONF sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-CHG_MODE sy-vline 
WA_/SCMB/DM_COMPONENT_STR_STR-NOTE_IND sy-vline      INTO ld_text SEPARATED BY SPACE.

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