ABAP Select data from SAP table ICLN_NOL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLN_NOL
*  INTO TABLE @DATA(IT_ICLN_NOL2).
*--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_ICLN_NOL INDEX 1 INTO DATA(WA_ICLN_NOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLN_NOL>-STATUS = 1.
<ICLN_NOL>-CLINE = 1.
<ICLN_NOL>-LOSSTYPE = 1.
<ICLN_NOL>-DATELOSS = 1.
<ICLN_NOL>-TIMELOSS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLN_NOL-LOSSADDRESS, sy-vline,
  WA_ICLN_NOL-XPOLNR, sy-vline,
  WA_ICLN_NOL-XINJURED, sy-vline,
  WA_ICLN_NOL-XWITNESS, sy-vline,
  WA_ICLN_NOL-XAUTHREP, sy-vline,
  WA_ICLN_NOL-AUTHORITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLN_NOL 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_ICLN_NOL 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_ICLN_NOL INTO WA_ICLN_NOL.


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

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

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

*Conversion exit ALPHA, internal->external for field POLICY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICLN_NOL-POLICY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLN_NOL-POLICY.
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_ICLN_NOL_STR, 
STATUS TYPE STRING,
CLINE TYPE STRING,
LOSSTYPE TYPE STRING,
DATELOSS TYPE STRING,
TIMELOSS TYPE STRING,
LOSSADDRESS TYPE STRING,
XPOLNR TYPE STRING,
XINJURED TYPE STRING,
XWITNESS TYPE STRING,
XAUTHREP TYPE STRING,
AUTHORITY TYPE STRING,
EAUTHREPID TYPE STRING,
CLAIM TYPE STRING,
POLICY TYPE STRING,
POLEFFDATE TYPE STRING,
POLEXPDATE TYPE STRING,
NOLCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLN_NOL_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_ICLN_NOL_STR-STATUS sy-vline 
WA_ICLN_NOL_STR-CLINE sy-vline 
WA_ICLN_NOL_STR-LOSSTYPE sy-vline 
WA_ICLN_NOL_STR-DATELOSS sy-vline 
WA_ICLN_NOL_STR-TIMELOSS sy-vline 
WA_ICLN_NOL_STR-LOSSADDRESS sy-vline 
WA_ICLN_NOL_STR-XPOLNR sy-vline 
WA_ICLN_NOL_STR-XINJURED sy-vline 
WA_ICLN_NOL_STR-XWITNESS sy-vline 
WA_ICLN_NOL_STR-XAUTHREP sy-vline 
WA_ICLN_NOL_STR-AUTHORITY sy-vline 
WA_ICLN_NOL_STR-EAUTHREPID sy-vline 
WA_ICLN_NOL_STR-CLAIM sy-vline 
WA_ICLN_NOL_STR-POLICY sy-vline 
WA_ICLN_NOL_STR-POLEFFDATE sy-vline 
WA_ICLN_NOL_STR-POLEXPDATE sy-vline 
WA_ICLN_NOL_STR-NOLCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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