ABAP Select data from SAP table PDM_MATERIALSPEC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDM_MATERIALSPEC
*  INTO TABLE @DATA(IT_PDM_MATERIALSPEC2).
*--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_PDM_MATERIALSPEC INDEX 1 INTO DATA(WA_PDM_MATERIALSPEC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDM_MATERIALSPEC>-RFCDEST = 1.
<PDM_MATERIALSPEC>-OBJECT_HANDLE = 1.
<PDM_MATERIALSPEC>-LOGSYS = 1.
<PDM_MATERIALSPEC>-WERKS = 1.
<PDM_MATERIALSPEC>-MKMNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDM_MATERIALSPEC-VERSION, sy-vline,
  WA_PDM_MATERIALSPEC-MATNR, sy-vline,
  WA_PDM_MATERIALSPEC-KURZTEXT, sy-vline,
  WA_PDM_MATERIALSPEC-STATUSTEXT, sy-vline,
  WA_PDM_MATERIALSPEC-LOEKZ, sy-vline,
  WA_PDM_MATERIALSPEC-SELECTED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDM_MATERIALSPEC 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_PDM_MATERIALSPEC 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_PDM_MATERIALSPEC INTO WA_PDM_MATERIALSPEC.


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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PDM_MATERIALSPEC-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDM_MATERIALSPEC-MATNR.
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_PDM_MATERIALSPEC_STR, 
RFCDEST TYPE STRING,
OBJECT_HANDLE TYPE STRING,
LOGSYS TYPE STRING,
WERKS TYPE STRING,
MKMNR TYPE STRING,
VERSION TYPE STRING,
MATNR TYPE STRING,
KURZTEXT TYPE STRING,
STATUSTEXT TYPE STRING,
LOEKZ TYPE STRING,
SELECTED TYPE STRING,
NOT_SELECTABLE TYPE STRING,
NOT_EXIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDM_MATERIALSPEC_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_PDM_MATERIALSPEC_STR-RFCDEST sy-vline 
WA_PDM_MATERIALSPEC_STR-OBJECT_HANDLE sy-vline 
WA_PDM_MATERIALSPEC_STR-LOGSYS sy-vline 
WA_PDM_MATERIALSPEC_STR-WERKS sy-vline 
WA_PDM_MATERIALSPEC_STR-MKMNR sy-vline 
WA_PDM_MATERIALSPEC_STR-VERSION sy-vline 
WA_PDM_MATERIALSPEC_STR-MATNR sy-vline 
WA_PDM_MATERIALSPEC_STR-KURZTEXT sy-vline 
WA_PDM_MATERIALSPEC_STR-STATUSTEXT sy-vline 
WA_PDM_MATERIALSPEC_STR-LOEKZ sy-vline 
WA_PDM_MATERIALSPEC_STR-SELECTED sy-vline 
WA_PDM_MATERIALSPEC_STR-NOT_SELECTABLE sy-vline 
WA_PDM_MATERIALSPEC_STR-NOT_EXIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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