ABAP Select data from SAP table ICS_DRGITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICS_DRGITEM 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_DRGITEM. 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_DRGITEM 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_DRGITEM TYPE STANDARD TABLE OF ICS_DRGITEM,
      WA_ICS_DRGITEM TYPE ICS_DRGITEM,
      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_DRGITEM> TYPE ICS_DRGITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICS_DRGITEM
*  INTO TABLE @DATA(IT_ICS_DRGITEM2).
*--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_DRGITEM INDEX 1 INTO DATA(WA_ICS_DRGITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICS_DRGITEM>-COVTYPE = 1.
<ICS_DRGITEM>-BENTYPE = 1.
<ICS_DRGITEM>-RCOVTYPE = 1.
<ICS_DRGITEM>-XWAITPERIOD = 1.
<ICS_DRGITEM>-COVERAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICS_DRGITEM-SCPOSID_INT, sy-vline,
  WA_ICS_DRGITEM-SERVCAT, sy-vline,
  WA_ICS_DRGITEM-SCPOSID_EXT, sy-vline,
  WA_ICS_DRGITEM-STATUS, sy-vline,
  WA_ICS_DRGITEM-REJREASON, sy-vline,
  WA_ICS_DRGITEM-MODIFIED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICS_DRGITEM 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_DRGITEM 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_DRGITEM INTO WA_ICS_DRGITEM.


*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 DIAID, internal->external for field DIAGID
CALL FUNCTION 'CONVERSION_EXIT_DIAID_OUTPUT'
  EXPORTING
    input =                      WA_ICS_DRGITEM-DIAGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_DRGITEM-DIAGID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EVQUANUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICS_DRGITEM-EVQUANUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_DRGITEM-EVQUANUNIT.
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_ICS_DRGITEM_STR, 
COVTYPE TYPE STRING,
BENTYPE TYPE STRING,
RCOVTYPE TYPE STRING,
XWAITPERIOD TYPE STRING,
COVERAGE TYPE STRING,
SCPOSID_INT TYPE STRING,
SERVCAT TYPE STRING,
SCPOSID_EXT TYPE STRING,
STATUS TYPE STRING,
REJREASON TYPE STRING,
MODIFIED TYPE STRING,
PROCURED TYPE STRING,
CALCULATED TYPE STRING,
CATAID TYPE STRING,
DIAGID TYPE STRING,
SEVERITY_CODE TYPE STRING,
NOTE TYPE STRING,
REMUN_TYPE_AM TYPE STRING,
AMOUNT TYPE STRING,
REMUN_TYPE_ADDAM TYPE STRING,
ADDITIONALAMOUNT TYPE STRING,
CURR TYPE STRING,
AMOUNTDAYS TYPE STRING,
ITEM_REF TYPE STRING,
PROCUREMENT TYPE STRING,
EVQUANTITY TYPE STRING,
EVQUANUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICS_DRGITEM_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_DRGITEM_STR-COVTYPE sy-vline 
WA_ICS_DRGITEM_STR-BENTYPE sy-vline 
WA_ICS_DRGITEM_STR-RCOVTYPE sy-vline 
WA_ICS_DRGITEM_STR-XWAITPERIOD sy-vline 
WA_ICS_DRGITEM_STR-COVERAGE sy-vline 
WA_ICS_DRGITEM_STR-SCPOSID_INT sy-vline 
WA_ICS_DRGITEM_STR-SERVCAT sy-vline 
WA_ICS_DRGITEM_STR-SCPOSID_EXT sy-vline 
WA_ICS_DRGITEM_STR-STATUS sy-vline 
WA_ICS_DRGITEM_STR-REJREASON sy-vline 
WA_ICS_DRGITEM_STR-MODIFIED sy-vline 
WA_ICS_DRGITEM_STR-PROCURED sy-vline 
WA_ICS_DRGITEM_STR-CALCULATED sy-vline 
WA_ICS_DRGITEM_STR-CATAID sy-vline 
WA_ICS_DRGITEM_STR-DIAGID sy-vline 
WA_ICS_DRGITEM_STR-SEVERITY_CODE sy-vline 
WA_ICS_DRGITEM_STR-NOTE sy-vline 
WA_ICS_DRGITEM_STR-REMUN_TYPE_AM sy-vline 
WA_ICS_DRGITEM_STR-AMOUNT sy-vline 
WA_ICS_DRGITEM_STR-REMUN_TYPE_ADDAM sy-vline 
WA_ICS_DRGITEM_STR-ADDITIONALAMOUNT sy-vline 
WA_ICS_DRGITEM_STR-CURR sy-vline 
WA_ICS_DRGITEM_STR-AMOUNTDAYS sy-vline 
WA_ICS_DRGITEM_STR-ITEM_REF sy-vline 
WA_ICS_DRGITEM_STR-PROCUREMENT sy-vline 
WA_ICS_DRGITEM_STR-EVQUANTITY sy-vline 
WA_ICS_DRGITEM_STR-EVQUANUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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