ABAP Select data from SAP table ICL_CLTYPE_NODEKEY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_CLTYPE_NODEKEY
*  INTO TABLE @DATA(IT_ICL_CLTYPE_NODEKEY2).
*--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_ICL_CLTYPE_NODEKEY INDEX 1 INTO DATA(WA_ICL_CLTYPE_NODEKEY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_CLTYPE_NODEKEY>-BENTREE = 1.
<ICL_CLTYPE_NODEKEY>-CLTYPE = 1.
<ICL_CLTYPE_NODEKEY>-POLPROD = 1.
<ICL_CLTYPE_NODEKEY>-GENERAT = 1.
<ICL_CLTYPE_NODEKEY>-VERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_CLTYPE_NODEKEY-CLTYPEG, sy-vline,
  WA_ICL_CLTYPE_NODEKEY-CLTYPEV, sy-vline,
  WA_ICL_CLTYPE_NODEKEY-POLPRODG, sy-vline,
  WA_ICL_CLTYPE_NODEKEY-POLPRODV, sy-vline,
  WA_ICL_CLTYPE_NODEKEY-LOSSTYPE, sy-vline,
  WA_ICL_CLTYPE_NODEKEY-SUBCLTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_CLTYPE_NODEKEY 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_ICL_CLTYPE_NODEKEY 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_ICL_CLTYPE_NODEKEY INTO WA_ICL_CLTYPE_NODEKEY.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ICL_CLTYPE_NODEKEY_STR, 
BENTREE TYPE STRING,
CLTYPE TYPE STRING,
POLPROD TYPE STRING,
GENERAT TYPE STRING,
VERSION TYPE STRING,
CLTYPEG TYPE STRING,
CLTYPEV TYPE STRING,
POLPRODG TYPE STRING,
POLPRODV TYPE STRING,
LOSSTYPE TYPE STRING,
SUBCLTYPE TYPE STRING,
COVTYPE TYPE STRING,
BENTYPE TYPE STRING,
UNOPCOV TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
PRIORITY TYPE STRING,
ACTIVITY TYPE STRING,
RESTYPE TYPE STRING,
COMPLEX TYPE STRING,
DAMAGECAT TYPE STRING,
DADESCRIPT TYPE STRING,
DOCID TYPE STRING,
STATUS TYPE STRING,
FORMOFSET TYPE STRING,
LOSSCAUSE TYPE STRING,
REFERRAL TYPE STRING,
REJREASON TYPE STRING,
SEVERITY TYPE STRING,
CATEGORY TYPE STRING,
CLMODE TYPE STRING,
USERGROUP TYPE STRING,
ITEMTYPE TYPE STRING,
CLSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_CLTYPE_NODEKEY_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_ICL_CLTYPE_NODEKEY_STR-BENTREE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-CLTYPE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-POLPROD sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-GENERAT sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-VERSION sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-CLTYPEG sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-CLTYPEV sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-POLPRODG sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-POLPRODV sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-LOSSTYPE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-SUBCLTYPE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-COVTYPE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-BENTYPE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-UNOPCOV sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-COUNTRY sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-REGION sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-PRIORITY sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-ACTIVITY sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-RESTYPE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-COMPLEX sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-DAMAGECAT sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-DADESCRIPT sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-DOCID sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-STATUS sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-FORMOFSET sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-LOSSCAUSE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-REFERRAL sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-REJREASON sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-SEVERITY sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-CATEGORY sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-CLMODE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-USERGROUP sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-ITEMTYPE sy-vline 
WA_ICL_CLTYPE_NODEKEY_STR-CLSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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