ABAP Select data from SAP table PLMCRCOMM_D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PLMCRCOMM_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 PLMCRCOMM_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 PLMCRCOMM_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_PLMCRCOMM_D TYPE STANDARD TABLE OF PLMCRCOMM_D,
      WA_PLMCRCOMM_D TYPE PLMCRCOMM_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: <PLMCRCOMM_D> TYPE PLMCRCOMM_D.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PLMCRCOMM_D
*  INTO TABLE @DATA(IT_PLMCRCOMM_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_PLMCRCOMM_D INDEX 1 INTO DATA(WA_PLMCRCOMM_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PLMCRCOMM_D>-MANDT = 1.
<PLMCRCOMM_D>-CHGRECORDCOMMENTARYUUID = 1.
<PLMCRCOMM_D>-CHANGERECORDUUID = 1.
<PLMCRCOMM_D>-CHGRECORDPARENTCOMMENTUUID = 1.
<PLMCRCOMM_D>-CHGRECORDISHIERARCHYTOP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PLMCRCOMM_D-CHGRECORDCOMMENTTEXT, sy-vline,
  WA_PLMCRCOMM_D-CHGRECORDCREATEDBYUSERNAME, sy-vline,
  WA_PLMCRCOMM_D-CREATEDBYUSERFULLNAME, sy-vline,
  WA_PLMCRCOMM_D-CHGRECORDCREATEDDATETIME, sy-vline,
  WA_PLMCRCOMM_D-CHGRECORDLASTCHGBYUSERNAME, sy-vline,
  WA_PLMCRCOMM_D-LASTCHANGEDBYUSERFULLNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PLMCRCOMM_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_PLMCRCOMM_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_PLMCRCOMM_D INTO WA_PLMCRCOMM_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PLMCRCOMM_D_STR, 
MANDT TYPE STRING,
CHGRECORDCOMMENTARYUUID TYPE STRING,
CHANGERECORDUUID TYPE STRING,
CHGRECORDPARENTCOMMENTUUID TYPE STRING,
CHGRECORDISHIERARCHYTOP TYPE STRING,
CHGRECORDCOMMENTTEXT TYPE STRING,
CHGRECORDCREATEDBYUSERNAME TYPE STRING,
CREATEDBYUSERFULLNAME TYPE STRING,
CHGRECORDCREATEDDATETIME TYPE STRING,
CHGRECORDLASTCHGBYUSERNAME TYPE STRING,
LASTCHANGEDBYUSERFULLNAME TYPE STRING,
CHGRECORDLASTCHGDATETIME TYPE STRING,
CHGRECORDDELETEDFLAGVALUE TYPE STRING,
CHGRECORDCHANGEABLEFLAGVALUE TYPE STRING,
CHANGERECORDLIFECYCLESTATUS TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PLMCRCOMM_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_PLMCRCOMM_D_STR-MANDT sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDCOMMENTARYUUID sy-vline 
WA_PLMCRCOMM_D_STR-CHANGERECORDUUID sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDPARENTCOMMENTUUID sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDISHIERARCHYTOP sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDCOMMENTTEXT sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDCREATEDBYUSERNAME sy-vline 
WA_PLMCRCOMM_D_STR-CREATEDBYUSERFULLNAME sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDCREATEDDATETIME sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDLASTCHGBYUSERNAME sy-vline 
WA_PLMCRCOMM_D_STR-LASTCHANGEDBYUSERFULLNAME sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDLASTCHGDATETIME sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDDELETEDFLAGVALUE sy-vline 
WA_PLMCRCOMM_D_STR-CHGRECORDCHANGEABLEFLAGVALUE sy-vline 
WA_PLMCRCOMM_D_STR-CHANGERECORDLIFECYCLESTATUS sy-vline 
WA_PLMCRCOMM_D_STR-ACTIVEUUID sy-vline 
WA_PLMCRCOMM_D_STR-HASACTIVEENTITY sy-vline 
WA_PLMCRCOMM_D_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_PLMCRCOMM_D_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_PLMCRCOMM_D_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_PLMCRCOMM_D_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_PLMCRCOMM_D_STR-DRAFTENTITYOPERATIONCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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