ABAP Select data from SAP table PLMCRREFDOC_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PLMCRREFDOC_D
*  INTO TABLE @DATA(IT_PLMCRREFDOC_D2).
*--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_PLMCRREFDOC_D INDEX 1 INTO DATA(WA_PLMCRREFDOC_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PLMCRREFDOC_D>-MANDT = 1.
<PLMCRREFDOC_D>-CHANGERECORDREFERENCEUUID = 1.
<PLMCRREFDOC_D>-DOCUMENTTYPE = 1.
<PLMCRREFDOC_D>-DOCUMENTINFORECORD = 1.
<PLMCRREFDOC_D>-DOCUMENTVERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PLMCRREFDOC_D-DOCUMENTPART, sy-vline,
  WA_PLMCRREFDOC_D-CHANGERECORDUUID, sy-vline,
  WA_PLMCRREFDOC_D-CHANGERECORDREFERENCETYPE, sy-vline,
  WA_PLMCRREFDOC_D-CHANGERECORDREFERENCESUBTYPE, sy-vline,
  WA_PLMCRREFDOC_D-CHANGERECORDREFERENCE, sy-vline,
  WA_PLMCRREFDOC_D-PARENTCHANGERECORDREFUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PLMCRREFDOC_D 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_PLMCRREFDOC_D 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_PLMCRREFDOC_D INTO WA_PLMCRREFDOC_D.


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

*Conversion exit ALPHA, internal->external for field REFISSID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PLMCRREFDOC_D-REFISSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLMCRREFDOC_D-REFISSID.
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_PLMCRREFDOC_D_STR, 
MANDT TYPE STRING,
CHANGERECORDREFERENCEUUID TYPE STRING,
DOCUMENTTYPE TYPE STRING,
DOCUMENTINFORECORD TYPE STRING,
DOCUMENTVERSION TYPE STRING,
DOCUMENTPART TYPE STRING,
CHANGERECORDUUID TYPE STRING,
CHANGERECORDREFERENCETYPE TYPE STRING,
CHANGERECORDREFERENCESUBTYPE TYPE STRING,
CHANGERECORDREFERENCE TYPE STRING,
PARENTCHANGERECORDREFUUID TYPE STRING,
ISMAINREFERENCE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
CHANGERECORDITEMRELEVANCE TYPE STRING,
CHANGERECORDVIRTUALREFIND TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
I_OBJ_REF TYPE STRING,
ISREF TYPE STRING,
REFISSID TYPE STRING,
PO_DETAILS TYPE STRING,
REFERENCE_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PLMCRREFDOC_D_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_PLMCRREFDOC_D_STR-MANDT sy-vline 
WA_PLMCRREFDOC_D_STR-CHANGERECORDREFERENCEUUID sy-vline 
WA_PLMCRREFDOC_D_STR-DOCUMENTTYPE sy-vline 
WA_PLMCRREFDOC_D_STR-DOCUMENTINFORECORD sy-vline 
WA_PLMCRREFDOC_D_STR-DOCUMENTVERSION sy-vline 
WA_PLMCRREFDOC_D_STR-DOCUMENTPART sy-vline 
WA_PLMCRREFDOC_D_STR-CHANGERECORDUUID sy-vline 
WA_PLMCRREFDOC_D_STR-CHANGERECORDREFERENCETYPE sy-vline 
WA_PLMCRREFDOC_D_STR-CHANGERECORDREFERENCESUBTYPE sy-vline 
WA_PLMCRREFDOC_D_STR-CHANGERECORDREFERENCE sy-vline 
WA_PLMCRREFDOC_D_STR-PARENTCHANGERECORDREFUUID sy-vline 
WA_PLMCRREFDOC_D_STR-ISMAINREFERENCE sy-vline 
WA_PLMCRREFDOC_D_STR-CREATEDBYUSER sy-vline 
WA_PLMCRREFDOC_D_STR-CREATIONDATETIME sy-vline 
WA_PLMCRREFDOC_D_STR-LASTCHANGEDBYUSER sy-vline 
WA_PLMCRREFDOC_D_STR-LASTCHANGEDATETIME sy-vline 
WA_PLMCRREFDOC_D_STR-CHANGERECORDITEMRELEVANCE sy-vline 
WA_PLMCRREFDOC_D_STR-CHANGERECORDVIRTUALREFIND sy-vline 
WA_PLMCRREFDOC_D_STR-ACTIVEUUID sy-vline 
WA_PLMCRREFDOC_D_STR-HASACTIVEENTITY sy-vline 
WA_PLMCRREFDOC_D_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_PLMCRREFDOC_D_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_PLMCRREFDOC_D_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_PLMCRREFDOC_D_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_PLMCRREFDOC_D_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_PLMCRREFDOC_D_STR-I_OBJ_REF sy-vline 
WA_PLMCRREFDOC_D_STR-ISREF sy-vline 
WA_PLMCRREFDOC_D_STR-REFISSID sy-vline 
WA_PLMCRREFDOC_D_STR-PO_DETAILS sy-vline 
WA_PLMCRREFDOC_D_STR-REFERENCE_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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