ABAP Select data from SAP table CCHGRECREFMRC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCHGRECREFMRC
*  INTO TABLE @DATA(IT_CCHGRECREFMRC2).
*--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_CCHGRECREFMRC INDEX 1 INTO DATA(WA_CCHGRECREFMRC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCHGRECREFMRC>-MANDT = 1.
<CCHGRECREFMRC>-CHANGERECORDREFERENCEUUID = 1.
<CCHGRECREFMRC>-CHANGERECORDREFOBJICON = 1.
<CCHGRECREFMRC>-BILLOFOPERATIONSGROUP = 1.
<CCHGRECREFMRC>-BILLOFOPERATIONSDESC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCHGRECREFMRC-BILLOFOPERATIONSTYPE, sy-vline,
  WA_CCHGRECREFMRC-BILLOFOPERATIONSVARIANT, sy-vline,
  WA_CCHGRECREFMRC-CHANGERECORDITEMPROCGSTATUS, sy-vline,
  WA_CCHGRECREFMRC-CHANGERECORDTYPE, sy-vline,
  WA_CCHGRECREFMRC-CHANGERECORDUUID, sy-vline,
  WA_CCHGRECREFMRC-CHANGERECORDREFERENCETYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCHGRECREFMRC 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_CCHGRECREFMRC 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_CCHGRECREFMRC INTO WA_CCHGRECREFMRC.


*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_CCHGRECREFMRC-BILLOFOPERATIONSGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCHGRECREFMRC-BILLOFOPERATIONSGROUP.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field CHANGENUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCHGRECREFMRC-CHANGENUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCHGRECREFMRC-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_CCHGRECREFMRC_STR, 
MANDT TYPE STRING,
CHANGERECORDREFERENCEUUID TYPE STRING,
CHANGERECORDREFOBJICON TYPE STRING,
BILLOFOPERATIONSGROUP TYPE STRING,
BILLOFOPERATIONSDESC TYPE STRING,
BILLOFOPERATIONSTYPE TYPE STRING,
BILLOFOPERATIONSVARIANT TYPE STRING,
CHANGERECORDITEMPROCGSTATUS TYPE STRING,
CHANGERECORDTYPE TYPE STRING,
CHANGERECORDUUID TYPE STRING,
CHANGERECORDREFERENCETYPE TYPE STRING,
PARENTCHANGERECORDREFUUID TYPE STRING,
CHANGERECORDSTATUS TYPE STRING,
CHANGERECORDITEMRELEVANCE TYPE STRING,
CHANGENUMBER TYPE STRING,
CHGRECDITEMPROCGSTATUSISENBLD TYPE STRING,
CHANGERECORDLIFECYCLESTATUS TYPE STRING,
CHANGERECORDITEMISNOTEDITABLE TYPE STRING,
CHANGERECORDITMISADDDELENABLED TYPE STRING,
CHANGERECORDREFERENCE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCHGRECREFMRC_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_CCHGRECREFMRC_STR-MANDT sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDREFERENCEUUID sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDREFOBJICON sy-vline 
WA_CCHGRECREFMRC_STR-BILLOFOPERATIONSGROUP sy-vline 
WA_CCHGRECREFMRC_STR-BILLOFOPERATIONSDESC sy-vline 
WA_CCHGRECREFMRC_STR-BILLOFOPERATIONSTYPE sy-vline 
WA_CCHGRECREFMRC_STR-BILLOFOPERATIONSVARIANT sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDITEMPROCGSTATUS sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDTYPE sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDUUID sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDREFERENCETYPE sy-vline 
WA_CCHGRECREFMRC_STR-PARENTCHANGERECORDREFUUID sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDSTATUS sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDITEMRELEVANCE sy-vline 
WA_CCHGRECREFMRC_STR-CHANGENUMBER sy-vline 
WA_CCHGRECREFMRC_STR-CHGRECDITEMPROCGSTATUSISENBLD sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDLIFECYCLESTATUS sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDITEMISNOTEDITABLE sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDITMISADDDELENABLED sy-vline 
WA_CCHGRECREFMRC_STR-CHANGERECORDREFERENCE sy-vline 
WA_CCHGRECREFMRC_STR-CREATEDBYUSER sy-vline 
WA_CCHGRECREFMRC_STR-CREATIONDATETIME sy-vline 
WA_CCHGRECREFMRC_STR-CREATIONDATE sy-vline 
WA_CCHGRECREFMRC_STR-LASTCHANGEDBYUSER sy-vline 
WA_CCHGRECREFMRC_STR-LASTCHANGEDATETIME sy-vline 
WA_CCHGRECREFMRC_STR-LASTCHANGEDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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