ABAP Select data from SAP table ISPRODUCTVARIANTMATRIXCOMBWD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISPRODUCTVARIANTMATRIXCOMBWD
*  INTO TABLE @DATA(IT_ISPRODUCTVARIANTMATRIXCOMBWD2).
*--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_ISPRODUCTVARIANTMATRIXCOMBWD INDEX 1 INTO DATA(WA_ISPRODUCTVARIANTMATRIXCOMBWD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISPRODUCTVARIANTMATRIXCOMBWD>-KEY = 1.
<ISPRODUCTVARIANTMATRIXCOMBWD>-PARENT_KEY = 1.
<ISPRODUCTVARIANTMATRIXCOMBWD>-ROOT_KEY = 1.
<ISPRODUCTVARIANTMATRIXCOMBWD>-PRODUCT = 1.
<ISPRODUCTVARIANTMATRIXCOMBWD>-LINEPOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISPRODUCTVARIANTMATRIXCOMBWD-CHARACTERISTIC, sy-vline,
  WA_ISPRODUCTVARIANTMATRIXCOMBWD-CHARACTERISTICVARLINE, sy-vline,
  WA_ISPRODUCTVARIANTMATRIXCOMBWD-PRODUCTVARIANT, sy-vline,
  WA_ISPRODUCTVARIANTMATRIXCOMBWD-PRODUCTFOREDIT, sy-vline,
  WA_ISPRODUCTVARIANTMATRIXCOMBWD-LINEPOSFOREDIT, sy-vline,
  WA_ISPRODUCTVARIANTMATRIXCOMBWD-CHARACTERISTICFOREDIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISPRODUCTVARIANTMATRIXCOMBWD 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_ISPRODUCTVARIANTMATRIXCOMBWD 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_ISPRODUCTVARIANTMATRIXCOMBWD INTO WA_ISPRODUCTVARIANTMATRIXCOMBWD.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISPRODUCTVARIANTMATRIXCOMBWD-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPRODUCTVARIANTMATRIXCOMBWD-PRODUCT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field PRODUCTFOREDIT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISPRODUCTVARIANTMATRIXCOMBWD-PRODUCTFOREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPRODUCTVARIANTMATRIXCOMBWD-PRODUCTFOREDIT.
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_ISPRODUCTVARIANTMATRIXCOMBWD_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PRODUCT TYPE STRING,
LINEPOS TYPE STRING,
CHARACTERISTIC TYPE STRING,
CHARACTERISTICVARLINE TYPE STRING,
PRODUCTVARIANT TYPE STRING,
PRODUCTFOREDIT TYPE STRING,
LINEPOSFOREDIT TYPE STRING,
CHARACTERISTICFOREDIT TYPE STRING,
CHARACTERISTICVARLINEFOREDIT TYPE STRING,
CONFIGURATIONNUMBER TYPE STRING,
CHARACTERISTICVALUE TYPE STRING,
CHARACTERISTICVALUEFROM TYPE STRING,
CHARACTERISTICVALUETO TYPE STRING,
CHARACTERISTICVALUECODE TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISPRODUCTVARIANTMATRIXCOMBWD_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_ISPRODUCTVARIANTMATRIXCOMBWD_STR-KEY sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-PARENT_KEY sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-ROOT_KEY sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-PRODUCT sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-LINEPOS sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-CHARACTERISTIC sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-CHARACTERISTICVARLINE sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-PRODUCTVARIANT sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-PRODUCTFOREDIT sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-LINEPOSFOREDIT sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-CHARACTERISTICFOREDIT sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-CHARACTERISTICVARLINEFOREDIT sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-CONFIGURATIONNUMBER sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-CHARACTERISTICVALUE sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-CHARACTERISTICVALUEFROM sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-CHARACTERISTICVALUETO sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-CHARACTERISTICVALUECODE sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-HASACTIVEENTITY sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISPRODUCTVARIANTMATRIXCOMBWD_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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