ABAP Select data from SAP table NCHGRCDOBJPGTER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NCHGRCDOBJPGTER
*  INTO TABLE @DATA(IT_NCHGRCDOBJPGTER2).
*--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_NCHGRCDOBJPGTER INDEX 1 INTO DATA(WA_NCHGRCDOBJPGTER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NCHGRCDOBJPGTER>-MANDT = 1.
<NCHGRCDOBJPGTER>-CHANGERECORDREFERENCEUUID = 1.
<NCHGRCDOBJPGTER>-BILLOFOPERATIONSGROUP = 1.
<NCHGRCDOBJPGTER>-BILLOFOPERATIONSTYPE = 1.
<NCHGRCDOBJPGTER>-BILLOFOPERATIONSVARIANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NCHGRCDOBJPGTER-BILLOFOPERATIONSVERSION, sy-vline,
  WA_NCHGRCDOBJPGTER-CHANGERECORDUUID, sy-vline,
  WA_NCHGRCDOBJPGTER-CHANGERECORDREFERENCETYPE, sy-vline,
  WA_NCHGRCDOBJPGTER-PARENTCHANGERECORDREFUUID, sy-vline,
  WA_NCHGRCDOBJPGTER-CHANGERECORDREFERENCE, sy-vline,
  WA_NCHGRCDOBJPGTER-CREATEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NCHGRCDOBJPGTER 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_NCHGRCDOBJPGTER 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_NCHGRCDOBJPGTER INTO WA_NCHGRCDOBJPGTER.


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

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

*Conversion exit ALPHA, internal->external for field BILLOFOPERATIONSVERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_NCHGRCDOBJPGTER-BILLOFOPERATIONSVERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NCHGRCDOBJPGTER-BILLOFOPERATIONSVERSION.
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_NCHGRCDOBJPGTER_STR, 
MANDT TYPE STRING,
CHANGERECORDREFERENCEUUID TYPE STRING,
BILLOFOPERATIONSGROUP TYPE STRING,
BILLOFOPERATIONSTYPE TYPE STRING,
BILLOFOPERATIONSVARIANT TYPE STRING,
BILLOFOPERATIONSVERSION TYPE STRING,
CHANGERECORDUUID TYPE STRING,
CHANGERECORDREFERENCETYPE TYPE STRING,
PARENTCHANGERECORDREFUUID TYPE STRING,
CHANGERECORDREFERENCE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
CHANGERECORDITEMRELEVANCE TYPE STRING,
BOOVERSIONSTATUSTEXT TYPE STRING,
PLANT TYPE STRING,
CHANGERECORDTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NCHGRCDOBJPGTER_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_NCHGRCDOBJPGTER_STR-MANDT sy-vline 
WA_NCHGRCDOBJPGTER_STR-CHANGERECORDREFERENCEUUID sy-vline 
WA_NCHGRCDOBJPGTER_STR-BILLOFOPERATIONSGROUP sy-vline 
WA_NCHGRCDOBJPGTER_STR-BILLOFOPERATIONSTYPE sy-vline 
WA_NCHGRCDOBJPGTER_STR-BILLOFOPERATIONSVARIANT sy-vline 
WA_NCHGRCDOBJPGTER_STR-BILLOFOPERATIONSVERSION sy-vline 
WA_NCHGRCDOBJPGTER_STR-CHANGERECORDUUID sy-vline 
WA_NCHGRCDOBJPGTER_STR-CHANGERECORDREFERENCETYPE sy-vline 
WA_NCHGRCDOBJPGTER_STR-PARENTCHANGERECORDREFUUID sy-vline 
WA_NCHGRCDOBJPGTER_STR-CHANGERECORDREFERENCE sy-vline 
WA_NCHGRCDOBJPGTER_STR-CREATEDBYUSER sy-vline 
WA_NCHGRCDOBJPGTER_STR-CREATIONDATETIME sy-vline 
WA_NCHGRCDOBJPGTER_STR-LASTCHANGEDBYUSER sy-vline 
WA_NCHGRCDOBJPGTER_STR-LASTCHANGEDATETIME sy-vline 
WA_NCHGRCDOBJPGTER_STR-CHANGERECORDITEMRELEVANCE sy-vline 
WA_NCHGRCDOBJPGTER_STR-BOOVERSIONSTATUSTEXT sy-vline 
WA_NCHGRCDOBJPGTER_STR-PLANT sy-vline 
WA_NCHGRCDOBJPGTER_STR-CHANGERECORDTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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