ABAP Select data from SAP table /SCMTMS/D_VSSVAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCMTMS/D_VSSVAR
*  INTO TABLE @DATA(IT_/SCMTMS/D_VSSVAR2).
*--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_/SCMTMS/D_VSSVAR INDEX 1 INTO DATA(WA_/SCMTMS/D_VSSVAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCMTMS/D_VSSVAR>-MANDT = 1.
</SCMTMS/D_VSSVAR>-SCHED_PROFILE_ID = 1.
</SCMTMS/D_VSSVAR>-DB_KEY = 1.
</SCMTMS/D_VSSVAR>-PARENT_KEY = 1.
</SCMTMS/D_VSSVAR>-DIRECTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCMTMS/D_VSSVAR-LOCATION_NAME, sy-vline,
  WA_/SCMTMS/D_VSSVAR-MTR, sy-vline,
  WA_/SCMTMS/D_VSSVAR-VEHICLE_GROUP, sy-vline,
  WA_/SCMTMS/D_VSSVAR-VEHICLE_TYPE, sy-vline,
  WA_/SCMTMS/D_VSSVAR-PROCESSING_SEQ, sy-vline,
  WA_/SCMTMS/D_VSSVAR-LOC_ATTR_VALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCMTMS/D_VSSVAR 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_/SCMTMS/D_VSSVAR 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_/SCMTMS/D_VSSVAR INTO WA_/SCMTMS/D_VSSVAR.


*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 SCHED_PROFILE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/D_VSSVAR-SCHED_PROFILE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/D_VSSVAR-SCHED_PROFILE_ID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PLDUR, internal->external for field VAR_DUR
CALL FUNCTION 'CONVERSION_EXIT_PLDUR_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/D_VSSVAR-VAR_DUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/D_VSSVAR-VAR_DUR.
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_/SCMTMS/D_VSSVAR_STR, 
MANDT TYPE STRING,
SCHED_PROFILE_ID TYPE STRING,
DB_KEY TYPE STRING,
PARENT_KEY TYPE STRING,
DIRECTION TYPE STRING,
LOCATION_NAME TYPE STRING,
MTR TYPE STRING,
VEHICLE_GROUP TYPE STRING,
VEHICLE_TYPE TYPE STRING,
PROCESSING_SEQ TYPE STRING,
LOC_ATTR_VALUE TYPE STRING,
ATTR_VALUE TYPE STRING,
VAR_DUR_UOM TYPE STRING,
VAR_DUR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCMTMS/D_VSSVAR_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_/SCMTMS/D_VSSVAR_STR-MANDT sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-SCHED_PROFILE_ID sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-DB_KEY sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-PARENT_KEY sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-DIRECTION sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-LOCATION_NAME sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-MTR sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-VEHICLE_GROUP sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-VEHICLE_TYPE sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-PROCESSING_SEQ sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-LOC_ATTR_VALUE sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-ATTR_VALUE sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-VAR_DUR_UOM sy-vline 
WA_/SCMTMS/D_VSSVAR_STR-VAR_DUR sy-vline      INTO ld_text SEPARATED BY SPACE.

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