ABAP Select data from SAP table ICS_LITITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICS_LITITEM
*  INTO TABLE @DATA(IT_ICS_LITITEM2).
*--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_ICS_LITITEM INDEX 1 INTO DATA(WA_ICS_LITITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICS_LITITEM>-SUBOBJECT = 1.
<ICS_LITITEM>-LITHGUID = 1.
<ICS_LITITEM>-LITITEM_NUM = 1.
<ICS_LITITEM>-DATESUITFILED = 1.
<ICS_LITITEM>-SERVICEDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICS_LITITEM-ANSWERDUEDATE, sy-vline,
  WA_ICS_LITITEM-CASENUMBER, sy-vline,
  WA_ICS_LITITEM-EXTREF, sy-vline,
  WA_ICS_LITITEM-APPEAL, sy-vline,
  WA_ICS_LITITEM-COUNTRY, sy-vline,
  WA_ICS_LITITEM-REGION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICS_LITITEM 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_ICS_LITITEM 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_ICS_LITITEM INTO WA_ICS_LITITEM.


*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_ICS_LITITEM_STR, 
SUBOBJECT TYPE STRING,
LITHGUID TYPE STRING,
LITITEM_NUM TYPE STRING,
DATESUITFILED TYPE STRING,
SERVICEDATE TYPE STRING,
ANSWERDUEDATE TYPE STRING,
CASENUMBER TYPE STRING,
EXTREF TYPE STRING,
APPEAL TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
COUNTY TYPE STRING,
MUNICIPALITY TYPE STRING,
JURISDICTION TYPE STRING,
COURTLEVEL TYPE STRING,
TRIALDATE TYPE STRING,
DEFENSETYPE TYPE STRING,
CANCELLED TYPE STRING,
ACCEPTED TYPE STRING,
REJECTED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICS_LITITEM_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_ICS_LITITEM_STR-SUBOBJECT sy-vline 
WA_ICS_LITITEM_STR-LITHGUID sy-vline 
WA_ICS_LITITEM_STR-LITITEM_NUM sy-vline 
WA_ICS_LITITEM_STR-DATESUITFILED sy-vline 
WA_ICS_LITITEM_STR-SERVICEDATE sy-vline 
WA_ICS_LITITEM_STR-ANSWERDUEDATE sy-vline 
WA_ICS_LITITEM_STR-CASENUMBER sy-vline 
WA_ICS_LITITEM_STR-EXTREF sy-vline 
WA_ICS_LITITEM_STR-APPEAL sy-vline 
WA_ICS_LITITEM_STR-COUNTRY sy-vline 
WA_ICS_LITITEM_STR-REGION sy-vline 
WA_ICS_LITITEM_STR-COUNTY sy-vline 
WA_ICS_LITITEM_STR-MUNICIPALITY sy-vline 
WA_ICS_LITITEM_STR-JURISDICTION sy-vline 
WA_ICS_LITITEM_STR-COURTLEVEL sy-vline 
WA_ICS_LITITEM_STR-TRIALDATE sy-vline 
WA_ICS_LITITEM_STR-DEFENSETYPE sy-vline 
WA_ICS_LITITEM_STR-CANCELLED sy-vline 
WA_ICS_LITITEM_STR-ACCEPTED sy-vline 
WA_ICS_LITITEM_STR-REJECTED sy-vline      INTO ld_text SEPARATED BY SPACE.

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