ABAP Select data from SAP table ISPRODUCTMLACCOUNTWD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISPRODUCTMLACCOUNTWD
*  INTO TABLE @DATA(IT_ISPRODUCTMLACCOUNTWD2).
*--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_ISPRODUCTMLACCOUNTWD INDEX 1 INTO DATA(WA_ISPRODUCTMLACCOUNTWD2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISPRODUCTMLACCOUNTWD-VALUATIONAREA, sy-vline,
  WA_ISPRODUCTMLACCOUNTWD-VALUATIONTYPE, sy-vline,
  WA_ISPRODUCTMLACCOUNTWD-CURRENCYROLE, sy-vline,
  WA_ISPRODUCTMLACCOUNTWD-LEDGER, sy-vline,
  WA_ISPRODUCTMLACCOUNTWD-CURRENCYROLEFOREDIT, sy-vline,
  WA_ISPRODUCTMLACCOUNTWD-LEDGERFOREDIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISPRODUCTMLACCOUNTWD 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_ISPRODUCTMLACCOUNTWD 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_ISPRODUCTMLACCOUNTWD INTO WA_ISPRODUCTMLACCOUNTWD.


*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_ISPRODUCTMLACCOUNTWD-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPRODUCTMLACCOUNTWD-PRODUCT.
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_ISPRODUCTMLACCOUNTWD_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PRODCOSTESTNUMBER TYPE STRING,
PRODUCT TYPE STRING,
VALUATIONAREA TYPE STRING,
VALUATIONTYPE TYPE STRING,
CURRENCYROLE TYPE STRING,
LEDGER TYPE STRING,
CURRENCYROLEFOREDIT TYPE STRING,
LEDGERFOREDIT TYPE STRING,
CURRENCY TYPE STRING,
INVENTORYPRICE TYPE STRING,
PRODUCTPRICECONTROL TYPE STRING,
PRICEUNITQTY TYPE STRING,
MOVINGAVERAGEPRICE TYPE STRING,
STANDARDPRICE TYPE STRING,
COMPANYCODE TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
DUMMY_VAL_INCL_EEW_PS TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISPRODUCTMLACCOUNTWD_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_ISPRODUCTMLACCOUNTWD_STR-KEY sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-PARENT_KEY sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-ROOT_KEY sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-PRODCOSTESTNUMBER sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-PRODUCT sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-VALUATIONAREA sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-VALUATIONTYPE sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-CURRENCYROLE sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-LEDGER sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-CURRENCYROLEFOREDIT sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-LEDGERFOREDIT sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-CURRENCY sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-INVENTORYPRICE sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-PRODUCTPRICECONTROL sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-PRICEUNITQTY sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-MOVINGAVERAGEPRICE sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-STANDARDPRICE sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-COMPANYCODE sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-HASACTIVEENTITY sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISPRODUCTMLACCOUNTWD_STR-DUMMY_VAL_INCL_EEW_PS sy-vline 
WA_ISPRODUCTMLACCOUNTWD_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.