ABAP Select data from SAP table ICHGRECDREFBOMB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICHGRECDREFBOMB
*  INTO TABLE @DATA(IT_ICHGRECDREFBOMB2).
*--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_ICHGRECDREFBOMB INDEX 1 INTO DATA(WA_ICHGRECDREFBOMB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICHGRECDREFBOMB>-MANDT = 1.
<ICHGRECDREFBOMB>-CHANGERECORDREFERENCEUUID = 1.
<ICHGRECDREFBOMB>-CHANGERECORD = 1.
<ICHGRECDREFBOMB>-CHANGERECORDUUID = 1.
<ICHGRECDREFBOMB>-CHANGERECORDREFERENCETYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICHGRECDREFBOMB-CHANGERECORDREFERENCESUBTYPE, sy-vline,
  WA_ICHGRECDREFBOMB-PARENTCHANGERECORDREFUUID, sy-vline,
  WA_ICHGRECDREFBOMB-ISMAINREFERENCE, sy-vline,
  WA_ICHGRECDREFBOMB-CHANGERECORDREFERENCE, sy-vline,
  WA_ICHGRECDREFBOMB-CHGRECREFINTERNALKEY1, sy-vline,
  WA_ICHGRECDREFBOMB-CHGRECREFINTERNALKEY2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICHGRECDREFBOMB 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_ICHGRECDREFBOMB 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_ICHGRECDREFBOMB INTO WA_ICHGRECDREFBOMB.


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

*Conversion exit ALPHA, internal->external for field CHANGENUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICHGRECDREFBOMB-CHANGENUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICHGRECDREFBOMB-CHANGENUMBER.
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_ICHGRECDREFBOMB_STR, 
MANDT TYPE STRING,
CHANGERECORDREFERENCEUUID TYPE STRING,
CHANGERECORD TYPE STRING,
CHANGERECORDUUID TYPE STRING,
CHANGERECORDREFERENCETYPE TYPE STRING,
CHANGERECORDREFERENCESUBTYPE TYPE STRING,
PARENTCHANGERECORDREFUUID TYPE STRING,
ISMAINREFERENCE TYPE STRING,
CHANGERECORDREFERENCE TYPE STRING,
CHGRECREFINTERNALKEY1 TYPE STRING,
CHGRECREFINTERNALKEY2 TYPE STRING,
CHGRECREFINTERNALKEY3 TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
CHANGERECORDVIRTUALREFIND TYPE STRING,
CHANGERECORDITEMRELEVANCE TYPE STRING,
CHANGERECORDREFOBJECTUUID TYPE STRING,
CHANGERECORDITEMPROCGSTATUS TYPE STRING,
CHGRECDDATAMIGRATIONSTATUS TYPE STRING,
CHANGENUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICHGRECDREFBOMB_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_ICHGRECDREFBOMB_STR-MANDT sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORDREFERENCEUUID sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORD sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORDUUID sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORDREFERENCETYPE sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORDREFERENCESUBTYPE sy-vline 
WA_ICHGRECDREFBOMB_STR-PARENTCHANGERECORDREFUUID sy-vline 
WA_ICHGRECDREFBOMB_STR-ISMAINREFERENCE sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORDREFERENCE sy-vline 
WA_ICHGRECDREFBOMB_STR-CHGRECREFINTERNALKEY1 sy-vline 
WA_ICHGRECDREFBOMB_STR-CHGRECREFINTERNALKEY2 sy-vline 
WA_ICHGRECDREFBOMB_STR-CHGRECREFINTERNALKEY3 sy-vline 
WA_ICHGRECDREFBOMB_STR-CREATEDBYUSER sy-vline 
WA_ICHGRECDREFBOMB_STR-CREATIONDATETIME sy-vline 
WA_ICHGRECDREFBOMB_STR-LASTCHANGEDBYUSER sy-vline 
WA_ICHGRECDREFBOMB_STR-LASTCHANGEDATETIME sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORDVIRTUALREFIND sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORDITEMRELEVANCE sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORDREFOBJECTUUID sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGERECORDITEMPROCGSTATUS sy-vline 
WA_ICHGRECDREFBOMB_STR-CHGRECDDATAMIGRATIONSTATUS sy-vline 
WA_ICHGRECDREFBOMB_STR-CHANGENUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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