ABAP Select data from SAP table /SCWM/D_BM_ROOT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/D_BM_ROOT
*  INTO TABLE @DATA(IT_/SCWM/D_BM_ROOT2).
*--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_/SCWM/D_BM_ROOT INDEX 1 INTO DATA(WA_/SCWM/D_BM_ROOT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/D_BM_ROOT>-MANDT = 1.
</SCWM/D_BM_ROOT>-DB_KEY = 1.
</SCWM/D_BM_ROOT>-BM_ID = 1.
</SCWM/D_BM_ROOT>-BM_TYPE = 1.
</SCWM/D_BM_ROOT>-BMR_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/D_BM_ROOT-BMR_ID, sy-vline,
  WA_/SCWM/D_BM_ROOT-BMR_ROLE, sy-vline,
  WA_/SCWM/D_BM_ROOT-BMR_TYPE, sy-vline,
  WA_/SCWM/D_BM_ROOT-BMRS_KEY, sy-vline,
  WA_/SCWM/D_BM_ROOT-LOCATION_ID, sy-vline,
  WA_/SCWM/D_BM_ROOT-BMRS_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/D_BM_ROOT 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_/SCWM/D_BM_ROOT 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_/SCWM/D_BM_ROOT INTO WA_/SCWM/D_BM_ROOT.


*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 TSTLC, internal->external for field PLANNED_START_DATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_BM_ROOT-PLANNED_START_DATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_BM_ROOT-PLANNED_START_DATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field PLANNED_END_DATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_BM_ROOT-PLANNED_END_DATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_BM_ROOT-PLANNED_END_DATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field ACTUAL_START_DATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_BM_ROOT-ACTUAL_START_DATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_BM_ROOT-ACTUAL_START_DATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field ACTUAL_END_DATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_BM_ROOT-ACTUAL_END_DATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_BM_ROOT-ACTUAL_END_DATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field AGGREGATED_DATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_BM_ROOT-AGGREGATED_DATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_BM_ROOT-AGGREGATED_DATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field DISTRIBUTED_DATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_BM_ROOT-DISTRIBUTED_DATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_BM_ROOT-DISTRIBUTED_DATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CREATED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_BM_ROOT-CREATED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_BM_ROOT-CREATED_ON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHANGED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_BM_ROOT-CHANGED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_BM_ROOT-CHANGED_ON.
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_/SCWM/D_BM_ROOT_STR, 
MANDT TYPE STRING,
DB_KEY TYPE STRING,
BM_ID TYPE STRING,
BM_TYPE TYPE STRING,
BMR_KEY TYPE STRING,
BMR_ID TYPE STRING,
BMR_ROLE TYPE STRING,
BMR_TYPE TYPE STRING,
BMRS_KEY TYPE STRING,
LOCATION_ID TYPE STRING,
BMRS_ID TYPE STRING,
BMRS_REF_ID TYPE STRING,
LGNUM TYPE STRING,
COUNTRY_CODE TYPE STRING,
REGION_CODE TYPE STRING,
BUSINESS_PARTNER_ID TYPE STRING,
BUSINESS_PARTNER TYPE STRING,
STATUS TYPE STRING,
PLANNED_START_DATETIME TYPE STRING,
PLANNED_END_DATETIME TYPE STRING,
ACTUAL_START_DATETIME TYPE STRING,
ACTUAL_END_DATETIME TYPE STRING,
AGGREGATED_DATETIME TYPE STRING,
DISTRIBUTED_DATETIME TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
EEW_BM_ROOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/D_BM_ROOT_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_/SCWM/D_BM_ROOT_STR-MANDT sy-vline 
WA_/SCWM/D_BM_ROOT_STR-DB_KEY sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BM_ID sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BM_TYPE sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BMR_KEY sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BMR_ID sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BMR_ROLE sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BMR_TYPE sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BMRS_KEY sy-vline 
WA_/SCWM/D_BM_ROOT_STR-LOCATION_ID sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BMRS_ID sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BMRS_REF_ID sy-vline 
WA_/SCWM/D_BM_ROOT_STR-LGNUM sy-vline 
WA_/SCWM/D_BM_ROOT_STR-COUNTRY_CODE sy-vline 
WA_/SCWM/D_BM_ROOT_STR-REGION_CODE sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BUSINESS_PARTNER_ID sy-vline 
WA_/SCWM/D_BM_ROOT_STR-BUSINESS_PARTNER sy-vline 
WA_/SCWM/D_BM_ROOT_STR-STATUS sy-vline 
WA_/SCWM/D_BM_ROOT_STR-PLANNED_START_DATETIME sy-vline 
WA_/SCWM/D_BM_ROOT_STR-PLANNED_END_DATETIME sy-vline 
WA_/SCWM/D_BM_ROOT_STR-ACTUAL_START_DATETIME sy-vline 
WA_/SCWM/D_BM_ROOT_STR-ACTUAL_END_DATETIME sy-vline 
WA_/SCWM/D_BM_ROOT_STR-AGGREGATED_DATETIME sy-vline 
WA_/SCWM/D_BM_ROOT_STR-DISTRIBUTED_DATETIME sy-vline 
WA_/SCWM/D_BM_ROOT_STR-CREATED_BY sy-vline 
WA_/SCWM/D_BM_ROOT_STR-CREATED_ON sy-vline 
WA_/SCWM/D_BM_ROOT_STR-CHANGED_BY sy-vline 
WA_/SCWM/D_BM_ROOT_STR-CHANGED_ON sy-vline 
WA_/SCWM/D_BM_ROOT_STR-EEW_BM_ROOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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