ABAP Select data from SAP table NCHGRCDOBJPGMAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NCHGRCDOBJPGMAT
*  INTO TABLE @DATA(IT_NCHGRCDOBJPGMAT2).
*--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_NCHGRCDOBJPGMAT INDEX 1 INTO DATA(WA_NCHGRCDOBJPGMAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NCHGRCDOBJPGMAT>-MANDT = 1.
<NCHGRCDOBJPGMAT>-CHANGERECORDREFERENCEUUID = 1.
<NCHGRCDOBJPGMAT>-MATERIAL = 1.
<NCHGRCDOBJPGMAT>-CHANGERECORDTYPE = 1.
<NCHGRCDOBJPGMAT>-CHANGERECORDUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NCHGRCDOBJPGMAT-CHANGERECORDREFERENCETYPE, sy-vline,
  WA_NCHGRCDOBJPGMAT-CHANGERECORDREFERENCESUBTYPE, sy-vline,
  WA_NCHGRCDOBJPGMAT-CHANGERECORDREFERENCE, sy-vline,
  WA_NCHGRCDOBJPGMAT-PARENTCHANGERECORDREFUUID, sy-vline,
  WA_NCHGRCDOBJPGMAT-ISMAINREFERENCE, sy-vline,
  WA_NCHGRCDOBJPGMAT-CREATEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NCHGRCDOBJPGMAT 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_NCHGRCDOBJPGMAT 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_NCHGRCDOBJPGMAT INTO WA_NCHGRCDOBJPGMAT.


*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_NCHGRCDOBJPGMAT-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NCHGRCDOBJPGMAT-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MATERIALBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_NCHGRCDOBJPGMAT-MATERIALBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NCHGRCDOBJPGMAT-MATERIALBASEUNIT.
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_NCHGRCDOBJPGMAT_STR, 
MANDT TYPE STRING,
CHANGERECORDREFERENCEUUID TYPE STRING,
MATERIAL TYPE STRING,
CHANGERECORDTYPE 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,
CREATIONDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDATE TYPE STRING,
CHANGERECORDITEMRELEVANCE TYPE STRING,
PRODUCTNAME TYPE STRING,
MATERIALTYPE TYPE STRING,
MATERIALTYPENAME TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
UNITOFMEASURELONGNAME TYPE STRING,
CROSSPLANTSTATUS TYPE STRING,
MATERIALUSABILITYPROFILENAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NCHGRCDOBJPGMAT_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_NCHGRCDOBJPGMAT_STR-MANDT sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CHANGERECORDREFERENCEUUID sy-vline 
WA_NCHGRCDOBJPGMAT_STR-MATERIAL sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CHANGERECORDTYPE sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CHANGERECORDUUID sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CHANGERECORDREFERENCETYPE sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CHANGERECORDREFERENCESUBTYPE sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CHANGERECORDREFERENCE sy-vline 
WA_NCHGRCDOBJPGMAT_STR-PARENTCHANGERECORDREFUUID sy-vline 
WA_NCHGRCDOBJPGMAT_STR-ISMAINREFERENCE sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CREATEDBYUSER sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CREATIONDATETIME sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CREATIONDATE sy-vline 
WA_NCHGRCDOBJPGMAT_STR-LASTCHANGEDBYUSER sy-vline 
WA_NCHGRCDOBJPGMAT_STR-LASTCHANGEDATETIME sy-vline 
WA_NCHGRCDOBJPGMAT_STR-LASTCHANGEDATE sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CHANGERECORDITEMRELEVANCE sy-vline 
WA_NCHGRCDOBJPGMAT_STR-PRODUCTNAME sy-vline 
WA_NCHGRCDOBJPGMAT_STR-MATERIALTYPE sy-vline 
WA_NCHGRCDOBJPGMAT_STR-MATERIALTYPENAME sy-vline 
WA_NCHGRCDOBJPGMAT_STR-MATERIALBASEUNIT sy-vline 
WA_NCHGRCDOBJPGMAT_STR-UNITOFMEASURELONGNAME sy-vline 
WA_NCHGRCDOBJPGMAT_STR-CROSSPLANTSTATUS sy-vline 
WA_NCHGRCDOBJPGMAT_STR-MATERIALUSABILITYPROFILENAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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