ABAP Select data from SAP table VMATSTVALKEYDATE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VMATSTVALKEYDATE 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 VMATSTVALKEYDATE. 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 VMATSTVALKEYDATE 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_VMATSTVALKEYDATE TYPE STANDARD TABLE OF VMATSTVALKEYDATE,
      WA_VMATSTVALKEYDATE TYPE VMATSTVALKEYDATE,
      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: <VMATSTVALKEYDATE> TYPE VMATSTVALKEYDATE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VMATSTVALKEYDATE
*  INTO TABLE @DATA(IT_VMATSTVALKEYDATE2).
*--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_VMATSTVALKEYDATE INDEX 1 INTO DATA(WA_VMATSTVALKEYDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VMATSTVALKEYDATE>-MANDT = 1.
<VMATSTVALKEYDATE>-COSTESTIMATE = 1.
<VMATSTVALKEYDATE>-MATERIAL = 1.
<VMATSTVALKEYDATE>-VALUATIONAREA = 1.
<VMATSTVALKEYDATE>-INVENTORYVALUATIONTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VMATSTVALKEYDATE-INVTRYVALNSPECIALSTOCKTYPE, sy-vline,
  WA_VMATSTVALKEYDATE-COMPANYCODECURRENCY, sy-vline,
  WA_VMATSTVALKEYDATE-INVENTORYSPECIALSTOCKVALNTYPE, sy-vline,
  WA_VMATSTVALKEYDATE-ISSUPPLIERSTOCKVALUATION, sy-vline,
  WA_VMATSTVALKEYDATE-INVENTORYSPCLSTKSALESDOCUMENT, sy-vline,
  WA_VMATSTVALKEYDATE-INVENTORYSPCLSTKSALESDOCITM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VMATSTVALKEYDATE 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_VMATSTVALKEYDATE 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_VMATSTVALKEYDATE INTO WA_VMATSTVALKEYDATE.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VMATSTVALKEYDATE-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VMATSTVALKEYDATE-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSP, internal->external for field WBSELEMENTINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_VMATSTVALKEYDATE-WBSELEMENTINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VMATSTVALKEYDATE-WBSELEMENTINTERNALID.
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_VMATSTVALKEYDATE_STR, 
MANDT TYPE STRING,
COSTESTIMATE TYPE STRING,
MATERIAL TYPE STRING,
VALUATIONAREA TYPE STRING,
INVENTORYVALUATIONTYPE TYPE STRING,
INVTRYVALNSPECIALSTOCKTYPE TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
INVENTORYSPECIALSTOCKVALNTYPE TYPE STRING,
ISSUPPLIERSTOCKVALUATION TYPE STRING,
INVENTORYSPCLSTKSALESDOCUMENT TYPE STRING,
INVENTORYSPCLSTKSALESDOCITM TYPE STRING,
INVENTORYSPECIALSTOCKSUPPLIER TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
COMPANYCODECURRENCYNAME TYPE STRING,
AMOUNTINCOMPANYCODECURRENCY TYPE STRING,
INVENTORYQTY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VMATSTVALKEYDATE_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_VMATSTVALKEYDATE_STR-MANDT sy-vline 
WA_VMATSTVALKEYDATE_STR-COSTESTIMATE sy-vline 
WA_VMATSTVALKEYDATE_STR-MATERIAL sy-vline 
WA_VMATSTVALKEYDATE_STR-VALUATIONAREA sy-vline 
WA_VMATSTVALKEYDATE_STR-INVENTORYVALUATIONTYPE sy-vline 
WA_VMATSTVALKEYDATE_STR-INVTRYVALNSPECIALSTOCKTYPE sy-vline 
WA_VMATSTVALKEYDATE_STR-COMPANYCODECURRENCY sy-vline 
WA_VMATSTVALKEYDATE_STR-INVENTORYSPECIALSTOCKVALNTYPE sy-vline 
WA_VMATSTVALKEYDATE_STR-ISSUPPLIERSTOCKVALUATION sy-vline 
WA_VMATSTVALKEYDATE_STR-INVENTORYSPCLSTKSALESDOCUMENT sy-vline 
WA_VMATSTVALKEYDATE_STR-INVENTORYSPCLSTKSALESDOCITM sy-vline 
WA_VMATSTVALKEYDATE_STR-INVENTORYSPECIALSTOCKSUPPLIER sy-vline 
WA_VMATSTVALKEYDATE_STR-WBSELEMENTINTERNALID sy-vline 
WA_VMATSTVALKEYDATE_STR-COMPANYCODECURRENCYNAME sy-vline 
WA_VMATSTVALKEYDATE_STR-AMOUNTINCOMPANYCODECURRENCY sy-vline 
WA_VMATSTVALKEYDATE_STR-INVENTORYQTY sy-vline      INTO ld_text SEPARATED BY SPACE.

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