ABAP Select data from SAP table MMSPDMNDDISTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMSPDMNDDISTR
*  INTO TABLE @DATA(IT_MMSPDMNDDISTR2).
*--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_MMSPDMNDDISTR INDEX 1 INTO DATA(WA_MMSPDMNDDISTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMSPDMNDDISTR>-MANDT = 1.
<MMSPDMNDDISTR>-SRCGPROJDMNDDISTRIBUTIONUUID = 1.
<MMSPDMNDDISTR>-SOURCINGPROJECTUUID = 1.
<MMSPDMNDDISTR>-SOURCINGPROJECTITEMUUID = 1.
<MMSPDMNDDISTR>-PROCUREMENTPROJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMSPDMNDDISTR-PLANT, sy-vline,
  WA_MMSPDMNDDISTR-MAXANNUALREQUESTEDQUANTITY, sy-vline,
  WA_MMSPDMNDDISTR-COMPANYCODE, sy-vline,
  WA_MMSPDMNDDISTR-PURCHASINGGROUP, sy-vline,
  WA_MMSPDMNDDISTR-PURCHASINGORGANIZATION, sy-vline,
  WA_MMSPDMNDDISTR-SRCGPROJFOLLOWONDOCUMENTCAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMSPDMNDDISTR 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_MMSPDMNDDISTR 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_MMSPDMNDDISTR INTO WA_MMSPDMNDDISTR.


*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 PROCUREMENTPROJECT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMSPDMNDDISTR-PROCUREMENTPROJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMSPDMNDDISTR-PROCUREMENTPROJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CENTRALPURCHASECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMSPDMNDDISTR-CENTRALPURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMSPDMNDDISTR-CENTRALPURCHASECONTRACT.
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_MMSPDMNDDISTR_STR, 
MANDT TYPE STRING,
SRCGPROJDMNDDISTRIBUTIONUUID TYPE STRING,
SOURCINGPROJECTUUID TYPE STRING,
SOURCINGPROJECTITEMUUID TYPE STRING,
PROCUREMENTPROJECT TYPE STRING,
PLANT TYPE STRING,
MAXANNUALREQUESTEDQUANTITY TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
SRCGPROJFOLLOWONDOCUMENTCAT TYPE STRING,
SRCGPROJFOLLOWONDOCUMENTTYPE TYPE STRING,
PROCUREMENTHUBSOURCESYSTEM TYPE STRING,
STORAGELOCATION TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
SRCGPROJITEMDEMANDCONFCODE TYPE STRING,
SRCGPROJITEMUNCONFDDEMANDRSN TYPE STRING,
PROCMTHUBPLANTUNIQUEID TYPE STRING,
CENTRALPURCHASECONTRACT TYPE STRING,
CENTRALPURCHASECONTRACTITEM TYPE STRING,
DISTRIBUTIONKEY TYPE STRING,
SOURCINGORIGIN TYPE STRING,
SOURCINGSCENARIO TYPE STRING,
DUMMY_SRCGPROJDD_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMSPDMNDDISTR_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_MMSPDMNDDISTR_STR-MANDT sy-vline 
WA_MMSPDMNDDISTR_STR-SRCGPROJDMNDDISTRIBUTIONUUID sy-vline 
WA_MMSPDMNDDISTR_STR-SOURCINGPROJECTUUID sy-vline 
WA_MMSPDMNDDISTR_STR-SOURCINGPROJECTITEMUUID sy-vline 
WA_MMSPDMNDDISTR_STR-PROCUREMENTPROJECT sy-vline 
WA_MMSPDMNDDISTR_STR-PLANT sy-vline 
WA_MMSPDMNDDISTR_STR-MAXANNUALREQUESTEDQUANTITY sy-vline 
WA_MMSPDMNDDISTR_STR-COMPANYCODE sy-vline 
WA_MMSPDMNDDISTR_STR-PURCHASINGGROUP sy-vline 
WA_MMSPDMNDDISTR_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMSPDMNDDISTR_STR-SRCGPROJFOLLOWONDOCUMENTCAT sy-vline 
WA_MMSPDMNDDISTR_STR-SRCGPROJFOLLOWONDOCUMENTTYPE sy-vline 
WA_MMSPDMNDDISTR_STR-PROCUREMENTHUBSOURCESYSTEM sy-vline 
WA_MMSPDMNDDISTR_STR-STORAGELOCATION sy-vline 
WA_MMSPDMNDDISTR_STR-REQUESTEDQUANTITY sy-vline 
WA_MMSPDMNDDISTR_STR-SRCGPROJITEMDEMANDCONFCODE sy-vline 
WA_MMSPDMNDDISTR_STR-SRCGPROJITEMUNCONFDDEMANDRSN sy-vline 
WA_MMSPDMNDDISTR_STR-PROCMTHUBPLANTUNIQUEID sy-vline 
WA_MMSPDMNDDISTR_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_MMSPDMNDDISTR_STR-CENTRALPURCHASECONTRACTITEM sy-vline 
WA_MMSPDMNDDISTR_STR-DISTRIBUTIONKEY sy-vline 
WA_MMSPDMNDDISTR_STR-SOURCINGORIGIN sy-vline 
WA_MMSPDMNDDISTR_STR-SOURCINGSCENARIO sy-vline 
WA_MMSPDMNDDISTR_STR-DUMMY_SRCGPROJDD_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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