ABAP Select data from SAP table CBCCHANGEDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CBCCHANGEDOC
*  INTO TABLE @DATA(IT_CBCCHANGEDOC2).
*--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_CBCCHANGEDOC INDEX 1 INTO DATA(WA_CBCCHANGEDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CBCCHANGEDOC>-MANDT = 1.
<CBCCHANGEDOC>-CHANGEDOCOBJECTCLASS = 1.
<CBCCHANGEDOC>-CHANGEDOCOBJECTCLASSDISPLAY = 1.
<CBCCHANGEDOC>-CHANGEDOCOBJECT = 1.
<CBCCHANGEDOC>-CHANGEDOCOBJECTDISPLAY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CBCCHANGEDOC-CHANGEDOCUMENT, sy-vline,
  WA_CBCCHANGEDOC-DATABASETABLE, sy-vline,
  WA_CBCCHANGEDOC-DATABASETABLET, sy-vline,
  WA_CBCCHANGEDOC-CHANGEDOCTABLEKEY, sy-vline,
  WA_CBCCHANGEDOC-CHANGEDOCTABLEKEYT, sy-vline,
  WA_CBCCHANGEDOC-CHANGEDOCDATABASETABLEFIELD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CBCCHANGEDOC 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_CBCCHANGEDOC 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_CBCCHANGEDOC INTO WA_CBCCHANGEDOC.


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

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

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

*Conversion exit ISOLA, internal->external for field CHANGEDOCLANGUAGEKEY
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CBCCHANGEDOC-CHANGEDOCLANGUAGEKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CBCCHANGEDOC-CHANGEDOCLANGUAGEKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CBCCHANGEDOC-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CBCCHANGEDOC-LANGUAGE.
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_CBCCHANGEDOC_STR, 
MANDT TYPE STRING,
CHANGEDOCOBJECTCLASS TYPE STRING,
CHANGEDOCOBJECTCLASSDISPLAY TYPE STRING,
CHANGEDOCOBJECT TYPE STRING,
CHANGEDOCOBJECTDISPLAY TYPE STRING,
CHANGEDOCUMENT TYPE STRING,
DATABASETABLE TYPE STRING,
DATABASETABLET TYPE STRING,
CHANGEDOCTABLEKEY TYPE STRING,
CHANGEDOCTABLEKEYT TYPE STRING,
CHANGEDOCDATABASETABLEFIELD TYPE STRING,
CHANGEDOCDATABASETABLEFIELDT TYPE STRING,
CHANGEDOCCHANGETYPE TYPE STRING,
CREATEDBYUSER TYPE STRING,
NAME_TEXTC TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
CREATEDON TYPE STRING,
CHANGEDOCLANGUAGEKEY TYPE STRING,
CHANGEDOCLANGUAGE TYPE STRING,
CHANGETRANSACTIONCODE TYPE STRING,
CHANGEDOCTABLEKEYLONG TYPE STRING,
CHANGEDOCNEWFIELDVALUE TYPE STRING,
CHANGEDOCPREVIOUSFIELDVALUE TYPE STRING,
CHANGEDOCOBJECTDESCRIPTION TYPE STRING,
CHANGEDOCUMENTSTRINGNEW TYPE STRING,
CHANGEDOCUMENTSTRINGOLD TYPE STRING,
CHANGEDOCNEWSHORTSTRING TYPE STRING,
CHANGEDOCOLDSHORTSTRING TYPE STRING,
CHANGEDOCNEWRAWSTRING TYPE STRING,
CHANGEDOCOLDRAWSTRING TYPE STRING,
LANGUAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CBCCHANGEDOC_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_CBCCHANGEDOC_STR-MANDT sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCOBJECTCLASS sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCOBJECTCLASSDISPLAY sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCOBJECT sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCOBJECTDISPLAY sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCUMENT sy-vline 
WA_CBCCHANGEDOC_STR-DATABASETABLE sy-vline 
WA_CBCCHANGEDOC_STR-DATABASETABLET sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCTABLEKEY sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCTABLEKEYT sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCDATABASETABLEFIELD sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCDATABASETABLEFIELDT sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCCHANGETYPE sy-vline 
WA_CBCCHANGEDOC_STR-CREATEDBYUSER sy-vline 
WA_CBCCHANGEDOC_STR-NAME_TEXTC sy-vline 
WA_CBCCHANGEDOC_STR-CREATIONDATE sy-vline 
WA_CBCCHANGEDOC_STR-CREATIONTIME sy-vline 
WA_CBCCHANGEDOC_STR-CREATEDON sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCLANGUAGEKEY sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCLANGUAGE sy-vline 
WA_CBCCHANGEDOC_STR-CHANGETRANSACTIONCODE sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCTABLEKEYLONG sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCNEWFIELDVALUE sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCPREVIOUSFIELDVALUE sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCOBJECTDESCRIPTION sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCUMENTSTRINGNEW sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCUMENTSTRINGOLD sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCNEWSHORTSTRING sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCOLDSHORTSTRING sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCNEWRAWSTRING sy-vline 
WA_CBCCHANGEDOC_STR-CHANGEDOCOLDRAWSTRING sy-vline 
WA_CBCCHANGEDOC_STR-LANGUAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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