ABAP Select data from SAP table ICL_LITITEM_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICL_LITITEM_ALV 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_LITITEM_ALV. 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_LITITEM_ALV 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_LITITEM_ALV TYPE STANDARD TABLE OF ICL_LITITEM_ALV,
      WA_ICL_LITITEM_ALV TYPE ICL_LITITEM_ALV,
      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_LITITEM_ALV> TYPE ICL_LITITEM_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_LITITEM_ALV
*  INTO TABLE @DATA(IT_ICL_LITITEM_ALV2).
*--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_LITITEM_ALV INDEX 1 INTO DATA(WA_ICL_LITITEM_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_LITITEM_ALV>-DETAIL_SELECT = 1.
<ICL_LITITEM_ALV>-CLAIM = 1.
<ICL_LITITEM_ALV>-LITITEMGUID = 1.
<ICL_LITITEM_ALV>-LITHGUID = 1.
<ICL_LITITEM_ALV>-LITH_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_LITITEM_ALV-STATUS, sy-vline,
  WA_ICL_LITITEM_ALV-STATUSN, sy-vline,
  WA_ICL_LITITEM_ALV-LITITEM_NUM, sy-vline,
  WA_ICL_LITITEM_ALV-CASENUMBER, sy-vline,
  WA_ICL_LITITEM_ALV-EXTREF, sy-vline,
  WA_ICL_LITITEM_ALV-COURTLEVEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_LITITEM_ALV 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_LITITEM_ALV 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_LITITEM_ALV INTO WA_ICL_LITITEM_ALV.


*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 CLAIM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_LITITEM_ALV-CLAIM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_LITITEM_ALV-CLAIM.
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_ICL_LITITEM_ALV_STR, 
DETAIL_SELECT TYPE STRING,
CLAIM TYPE STRING,
LITITEMGUID TYPE STRING,
LITHGUID TYPE STRING,
LITH_NAME TYPE STRING,
STATUS TYPE STRING,
STATUSN TYPE STRING,
LITITEM_NUM TYPE STRING,
CASENUMBER TYPE STRING,
EXTREF TYPE STRING,
COURTLEVEL TYPE STRING,
COURTLEVELN TYPE STRING,
JURISDICTION TYPE STRING,
JURISDICTIONN TYPE STRING,
DATESUITFILED TYPE STRING,
SERVICEDATE TYPE STRING,
ANSWERDUEDATE TYPE STRING,
APPEAL TYPE STRING,
APPEALN TYPE STRING,
TRIALDATE TYPE STRING,
DEFENSETYPE TYPE STRING,
DEFENSETYPEN TYPE STRING,
COUNTRY TYPE STRING,
COUNTRYN TYPE STRING,
REGION TYPE STRING,
REGIONN TYPE STRING,
COUNTY TYPE STRING,
COUNTYN TYPE STRING,
MUNICIPALITY TYPE STRING,
COLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_LITITEM_ALV_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_LITITEM_ALV_STR-DETAIL_SELECT sy-vline 
WA_ICL_LITITEM_ALV_STR-CLAIM sy-vline 
WA_ICL_LITITEM_ALV_STR-LITITEMGUID sy-vline 
WA_ICL_LITITEM_ALV_STR-LITHGUID sy-vline 
WA_ICL_LITITEM_ALV_STR-LITH_NAME sy-vline 
WA_ICL_LITITEM_ALV_STR-STATUS sy-vline 
WA_ICL_LITITEM_ALV_STR-STATUSN sy-vline 
WA_ICL_LITITEM_ALV_STR-LITITEM_NUM sy-vline 
WA_ICL_LITITEM_ALV_STR-CASENUMBER sy-vline 
WA_ICL_LITITEM_ALV_STR-EXTREF sy-vline 
WA_ICL_LITITEM_ALV_STR-COURTLEVEL sy-vline 
WA_ICL_LITITEM_ALV_STR-COURTLEVELN sy-vline 
WA_ICL_LITITEM_ALV_STR-JURISDICTION sy-vline 
WA_ICL_LITITEM_ALV_STR-JURISDICTIONN sy-vline 
WA_ICL_LITITEM_ALV_STR-DATESUITFILED sy-vline 
WA_ICL_LITITEM_ALV_STR-SERVICEDATE sy-vline 
WA_ICL_LITITEM_ALV_STR-ANSWERDUEDATE sy-vline 
WA_ICL_LITITEM_ALV_STR-APPEAL sy-vline 
WA_ICL_LITITEM_ALV_STR-APPEALN sy-vline 
WA_ICL_LITITEM_ALV_STR-TRIALDATE sy-vline 
WA_ICL_LITITEM_ALV_STR-DEFENSETYPE sy-vline 
WA_ICL_LITITEM_ALV_STR-DEFENSETYPEN sy-vline 
WA_ICL_LITITEM_ALV_STR-COUNTRY sy-vline 
WA_ICL_LITITEM_ALV_STR-COUNTRYN sy-vline 
WA_ICL_LITITEM_ALV_STR-REGION sy-vline 
WA_ICL_LITITEM_ALV_STR-REGIONN sy-vline 
WA_ICL_LITITEM_ALV_STR-COUNTY sy-vline 
WA_ICL_LITITEM_ALV_STR-COUNTYN sy-vline 
WA_ICL_LITITEM_ALV_STR-MUNICIPALITY sy-vline 
WA_ICL_LITITEM_ALV_STR-COLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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