ABAP Select data from SAP table ICITDSITEMCLFN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICITDSITEMCLFN
*  INTO TABLE @DATA(IT_ICITDSITEMCLFN2).
*--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_ICITDSITEMCLFN INDEX 1 INTO DATA(WA_ICITDSITEMCLFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICITDSITEMCLFN>-MANDT = 1.
<ICITDSITEMCLFN>-CITCLASSIFICATIONUUID = 1.
<ICITDSITEMCLFN>-CITREPORTINGLINE = 1.
<ICITDSITEMCLFN>-COMPANYCODE = 1.
<ICITDSITEMCLFN>-ACCOUNTINGDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICITDSITEMCLFN-FISCALYEAR, sy-vline,
  WA_ICITDSITEMCLFN-LEDGERGLLINEITEM, sy-vline,
  WA_ICITDSITEMCLFN-CITREPORTVERSION, sy-vline,
  WA_ICITDSITEMCLFN-SOURCELEDGER, sy-vline,
  WA_ICITDSITEMCLFN-LEDGER, sy-vline,
  WA_ICITDSITEMCLFN-CORPORATEINCOMETAXHIERARCHY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICITDSITEMCLFN 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_ICITDSITEMCLFN 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_ICITDSITEMCLFN INTO WA_ICITDSITEMCLFN.


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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICITDSITEMCLFN-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICITDSITEMCLFN-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field LEDGER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICITDSITEMCLFN-LEDGER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICITDSITEMCLFN-LEDGER.
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_ICITDSITEMCLFN_STR, 
MANDT TYPE STRING,
CITCLASSIFICATIONUUID TYPE STRING,
CITREPORTINGLINE TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
LEDGERGLLINEITEM TYPE STRING,
CITREPORTVERSION TYPE STRING,
SOURCELEDGER TYPE STRING,
LEDGER TYPE STRING,
CORPORATEINCOMETAXHIERARCHY TYPE STRING,
CITCLASSIFICATIONCODE TYPE STRING,
CITREPORTINGDATE TYPE STRING,
CITITEMAMOUNTINDISPLAYCURRENCY TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICITDSITEMCLFN_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_ICITDSITEMCLFN_STR-MANDT sy-vline 
WA_ICITDSITEMCLFN_STR-CITCLASSIFICATIONUUID sy-vline 
WA_ICITDSITEMCLFN_STR-CITREPORTINGLINE sy-vline 
WA_ICITDSITEMCLFN_STR-COMPANYCODE sy-vline 
WA_ICITDSITEMCLFN_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_ICITDSITEMCLFN_STR-FISCALYEAR sy-vline 
WA_ICITDSITEMCLFN_STR-LEDGERGLLINEITEM sy-vline 
WA_ICITDSITEMCLFN_STR-CITREPORTVERSION sy-vline 
WA_ICITDSITEMCLFN_STR-SOURCELEDGER sy-vline 
WA_ICITDSITEMCLFN_STR-LEDGER sy-vline 
WA_ICITDSITEMCLFN_STR-CORPORATEINCOMETAXHIERARCHY sy-vline 
WA_ICITDSITEMCLFN_STR-CITCLASSIFICATIONCODE sy-vline 
WA_ICITDSITEMCLFN_STR-CITREPORTINGDATE sy-vline 
WA_ICITDSITEMCLFN_STR-CITITEMAMOUNTINDISPLAYCURRENCY sy-vline 
WA_ICITDSITEMCLFN_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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