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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCMTMS/INV_DISP_VALUE
*  INTO TABLE @DATA(IT_/SCMTMS/INV_DISP_VALUE2).
*--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/INV_DISP_VALUE INDEX 1 INTO DATA(WA_/SCMTMS/INV_DISP_VALUE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCMTMS/INV_DISP_VALUE>-OLD_VAL = 1.
</SCMTMS/INV_DISP_VALUE>-OLD_UNI = 1.
</SCMTMS/INV_DISP_VALUE>-NEW_VAL = 1.
</SCMTMS/INV_DISP_VALUE>-NEW_UNI = 1.
</SCMTMS/INV_DISP_VALUE>-APPROVE_VAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCMTMS/INV_DISP_VALUE-APPROVE_UNI, sy-vline,
  WA_/SCMTMS/INV_DISP_VALUE-FINAL, sy-vline,
  WA_/SCMTMS/INV_DISP_VALUE-OLD_AMOUNT, sy-vline,
  WA_/SCMTMS/INV_DISP_VALUE-OLD_CURRENCY, sy-vline,
  WA_/SCMTMS/INV_DISP_VALUE-NEW_AMOUNT, sy-vline,
  WA_/SCMTMS/INV_DISP_VALUE-NEW_CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCMTMS/INV_DISP_VALUE 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/INV_DISP_VALUE 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/INV_DISP_VALUE INTO WA_/SCMTMS/INV_DISP_VALUE.


*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 QTYRN, internal->external for field OLD_VAL
CALL FUNCTION 'CONVERSION_EXIT_QTYRN_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/INV_DISP_VALUE-OLD_VAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/INV_DISP_VALUE-OLD_VAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit QTYRN, internal->external for field NEW_VAL
CALL FUNCTION 'CONVERSION_EXIT_QTYRN_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/INV_DISP_VALUE-NEW_VAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/INV_DISP_VALUE-NEW_VAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit QTYRN, internal->external for field APPROVE_VAL
CALL FUNCTION 'CONVERSION_EXIT_QTYRN_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/INV_DISP_VALUE-APPROVE_VAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/INV_DISP_VALUE-APPROVE_VAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field APPROVE_UNI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/INV_DISP_VALUE-APPROVE_UNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/INV_DISP_VALUE-APPROVE_UNI.
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/INV_DISP_VALUE_STR, 
OLD_VAL TYPE STRING,
OLD_UNI TYPE STRING,
NEW_VAL TYPE STRING,
NEW_UNI TYPE STRING,
APPROVE_VAL TYPE STRING,
APPROVE_UNI TYPE STRING,
FINAL TYPE STRING,
OLD_AMOUNT TYPE STRING,
OLD_CURRENCY TYPE STRING,
NEW_AMOUNT TYPE STRING,
NEW_CURRENCY TYPE STRING,
APPROVED_AMOUNT TYPE STRING,
APPROVED_CURRENCY TYPE STRING,
ITEM_PARENT_KEY TYPE STRING,
CHANGED_ATTR TYPE STRING,
QTY_IS_CURR TYPE STRING,
INV_DISP_RESOLUTION_STATUS TYPE STRING,
IS_DISP_REL TYPE STRING,
IS_VALUE_DIRTY TYPE STRING,
INIT_VALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCMTMS/INV_DISP_VALUE_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/INV_DISP_VALUE_STR-OLD_VAL sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-OLD_UNI sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-NEW_VAL sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-NEW_UNI sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-APPROVE_VAL sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-APPROVE_UNI sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-FINAL sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-OLD_AMOUNT sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-OLD_CURRENCY sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-NEW_AMOUNT sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-NEW_CURRENCY sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-APPROVED_AMOUNT sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-APPROVED_CURRENCY sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-ITEM_PARENT_KEY sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-CHANGED_ATTR sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-QTY_IS_CURR sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-INV_DISP_RESOLUTION_STATUS sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-IS_DISP_REL sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-IS_VALUE_DIRTY sy-vline 
WA_/SCMTMS/INV_DISP_VALUE_STR-INIT_VALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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