ABAP Select data from SAP table IDDMATDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDDMATDATA
*  INTO TABLE @DATA(IT_IDDMATDATA2).
*--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_IDDMATDATA INDEX 1 INTO DATA(WA_IDDMATDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDDMATDATA>-MANDT = 1.
<IDDMATDATA>-MATERIAL = 1.
<IDDMATDATA>-PLANT = 1.
<IDDMATDATA>-MRPAREA = 1.
<IDDMATDATA>-MRPGROUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDDMATDATA-MRPTYPE, sy-vline,
  WA_IDDMATDATA-MRPCONTROLLER, sy-vline,
  WA_IDDMATDATA-LOTSIZINGPROCEDURE, sy-vline,
  WA_IDDMATDATA-MINIMUMLOTSIZEQUANTITY, sy-vline,
  WA_IDDMATDATA-PLANNINGTIMEFENCE, sy-vline,
  WA_IDDMATDATA-MATERIALMAXSTOCKLEVELQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDDMATDATA 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_IDDMATDATA 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_IDDMATDATA INTO WA_IDDMATDATA.


*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_IDDMATDATA-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDDMATDATA-MATERIAL.
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_IDDMATDATA_STR, 
MANDT TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
MRPAREA TYPE STRING,
MRPGROUP TYPE STRING,
MRPTYPE TYPE STRING,
MRPCONTROLLER TYPE STRING,
LOTSIZINGPROCEDURE TYPE STRING,
MINIMUMLOTSIZEQUANTITY TYPE STRING,
PLANNINGTIMEFENCE TYPE STRING,
MATERIALMAXSTOCKLEVELQUANTITY TYPE STRING,
REORDERTHRESHOLDQUANTITY TYPE STRING,
SAFETYSTOCKQUANTITY TYPE STRING,
ISMRPAREAEXISTING TYPE STRING,
PURCHASINGGROUP TYPE STRING,
GOODSRECEIPTDURATION TYPE STRING,
PLANNEDDELIVERYDURATIONINDAYS TYPE STRING,
ISPLANNEDDELIVERYTIME TYPE STRING,
MAXIMUMLOTSIZEQUANTITY TYPE STRING,
LOTSIZEROUNDINGQUANTITY TYPE STRING,
ROUNDINGPROFILE TYPE STRING,
DELETIONINDICATOR TYPE STRING,
MATERIALPROCUREMENTPROFILE TYPE STRING,
DFLTSTORLOCFOREXTPROCMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDDMATDATA_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_IDDMATDATA_STR-MANDT sy-vline 
WA_IDDMATDATA_STR-MATERIAL sy-vline 
WA_IDDMATDATA_STR-PLANT sy-vline 
WA_IDDMATDATA_STR-MRPAREA sy-vline 
WA_IDDMATDATA_STR-MRPGROUP sy-vline 
WA_IDDMATDATA_STR-MRPTYPE sy-vline 
WA_IDDMATDATA_STR-MRPCONTROLLER sy-vline 
WA_IDDMATDATA_STR-LOTSIZINGPROCEDURE sy-vline 
WA_IDDMATDATA_STR-MINIMUMLOTSIZEQUANTITY sy-vline 
WA_IDDMATDATA_STR-PLANNINGTIMEFENCE sy-vline 
WA_IDDMATDATA_STR-MATERIALMAXSTOCKLEVELQUANTITY sy-vline 
WA_IDDMATDATA_STR-REORDERTHRESHOLDQUANTITY sy-vline 
WA_IDDMATDATA_STR-SAFETYSTOCKQUANTITY sy-vline 
WA_IDDMATDATA_STR-ISMRPAREAEXISTING sy-vline 
WA_IDDMATDATA_STR-PURCHASINGGROUP sy-vline 
WA_IDDMATDATA_STR-GOODSRECEIPTDURATION sy-vline 
WA_IDDMATDATA_STR-PLANNEDDELIVERYDURATIONINDAYS sy-vline 
WA_IDDMATDATA_STR-ISPLANNEDDELIVERYTIME sy-vline 
WA_IDDMATDATA_STR-MAXIMUMLOTSIZEQUANTITY sy-vline 
WA_IDDMATDATA_STR-LOTSIZEROUNDINGQUANTITY sy-vline 
WA_IDDMATDATA_STR-ROUNDINGPROFILE sy-vline 
WA_IDDMATDATA_STR-DELETIONINDICATOR sy-vline 
WA_IDDMATDATA_STR-MATERIALPROCUREMENTPROFILE sy-vline 
WA_IDDMATDATA_STR-DFLTSTORLOCFOREXTPROCMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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