ABAP Select data from SAP table CCELMNTGRPCHLG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCELMNTGRPCHLG
*  INTO TABLE @DATA(IT_CCELMNTGRPCHLG2).
*--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_CCELMNTGRPCHLG INDEX 1 INTO DATA(WA_CCELMNTGRPCHLG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCELMNTGRPCHLG>-MANDT = 1.
<CCELMNTGRPCHLG>-CHANGEDOCOBJECT = 1.
<CCELMNTGRPCHLG>-CHANGEDOCOBJECTCLASS = 1.
<CCELMNTGRPCHLG>-CHANGEDOCUMENT = 1.
<CCELMNTGRPCHLG>-DATABASETABLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCELMNTGRPCHLG-CHANGEDOCTABLEKEY, sy-vline,
  WA_CCELMNTGRPCHLG-CHANGEDOCDATABASETABLEFIELD, sy-vline,
  WA_CCELMNTGRPCHLG-CHANGEDOCITEMCHANGETYPE, sy-vline,
  WA_CCELMNTGRPCHLG-CHANGEDOCITEMCHANGETYPETEXT, sy-vline,
  WA_CCELMNTGRPCHLG-CHANGEDOCNEWFIELDVALUE, sy-vline,
  WA_CCELMNTGRPCHLG-CHANGEDOCPREVIOUSFIELDVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCELMNTGRPCHLG 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_CCELMNTGRPCHLG 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_CCELMNTGRPCHLG INTO WA_CCELMNTGRPCHLG.


*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_CCELMNTGRPCHLG-CHANGEDOCOBJECTCLASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCELMNTGRPCHLG-CHANGEDOCOBJECTCLASS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CHANGEDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCELMNTGRPCHLG-CHANGEDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCELMNTGRPCHLG-CHANGEDOCUMENT.
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_CCELMNTGRPCHLG_STR, 
MANDT TYPE STRING,
CHANGEDOCOBJECT TYPE STRING,
CHANGEDOCOBJECTCLASS TYPE STRING,
CHANGEDOCUMENT TYPE STRING,
DATABASETABLE TYPE STRING,
CHANGEDOCTABLEKEY TYPE STRING,
CHANGEDOCDATABASETABLEFIELD TYPE STRING,
CHANGEDOCITEMCHANGETYPE TYPE STRING,
CHANGEDOCITEMCHANGETYPETEXT TYPE STRING,
CHANGEDOCNEWFIELDVALUE TYPE STRING,
CHANGEDOCPREVIOUSFIELDVALUE TYPE STRING,
TABLECHANGELOGDATE TYPE STRING,
TABLECHANGELOGTIME TYPE STRING,
TABLECHANGELOGUSER TYPE STRING,
FULLNAME TYPE STRING,
SETCLASS TYPE STRING,
CHARTOFACCOUNTS TYPE STRING,
CHARTOFACCOUNTSNAME TYPE STRING,
COSTELEMENTGROUPHIERARCHYNODE TYPE STRING,
COSTELEMENTGROUPNAME TYPE STRING,
COSTELMNTGRPCHANGEDOCOBJECT TYPE STRING,
COSTELMNTGRPCHANGEDOCOBJECTTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCELMNTGRPCHLG_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_CCELMNTGRPCHLG_STR-MANDT sy-vline 
WA_CCELMNTGRPCHLG_STR-CHANGEDOCOBJECT sy-vline 
WA_CCELMNTGRPCHLG_STR-CHANGEDOCOBJECTCLASS sy-vline 
WA_CCELMNTGRPCHLG_STR-CHANGEDOCUMENT sy-vline 
WA_CCELMNTGRPCHLG_STR-DATABASETABLE sy-vline 
WA_CCELMNTGRPCHLG_STR-CHANGEDOCTABLEKEY sy-vline 
WA_CCELMNTGRPCHLG_STR-CHANGEDOCDATABASETABLEFIELD sy-vline 
WA_CCELMNTGRPCHLG_STR-CHANGEDOCITEMCHANGETYPE sy-vline 
WA_CCELMNTGRPCHLG_STR-CHANGEDOCITEMCHANGETYPETEXT sy-vline 
WA_CCELMNTGRPCHLG_STR-CHANGEDOCNEWFIELDVALUE sy-vline 
WA_CCELMNTGRPCHLG_STR-CHANGEDOCPREVIOUSFIELDVALUE sy-vline 
WA_CCELMNTGRPCHLG_STR-TABLECHANGELOGDATE sy-vline 
WA_CCELMNTGRPCHLG_STR-TABLECHANGELOGTIME sy-vline 
WA_CCELMNTGRPCHLG_STR-TABLECHANGELOGUSER sy-vline 
WA_CCELMNTGRPCHLG_STR-FULLNAME sy-vline 
WA_CCELMNTGRPCHLG_STR-SETCLASS sy-vline 
WA_CCELMNTGRPCHLG_STR-CHARTOFACCOUNTS sy-vline 
WA_CCELMNTGRPCHLG_STR-CHARTOFACCOUNTSNAME sy-vline 
WA_CCELMNTGRPCHLG_STR-COSTELEMENTGROUPHIERARCHYNODE sy-vline 
WA_CCELMNTGRPCHLG_STR-COSTELEMENTGROUPNAME sy-vline 
WA_CCELMNTGRPCHLG_STR-COSTELMNTGRPCHANGEDOCOBJECT sy-vline 
WA_CCELMNTGRPCHLG_STR-COSTELMNTGRPCHANGEDOCOBJECTTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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