ABAP Select data from SAP table ICAWORKLISTITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICAWORKLISTITEM
*  INTO TABLE @DATA(IT_ICAWORKLISTITEM2).
*--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_ICAWORKLISTITEM INDEX 1 INTO DATA(WA_ICAWORKLISTITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICAWORKLISTITEM>-MANDT = 1.
<ICAWORKLISTITEM>-CAWORKLISTITEMUUID = 1.
<ICAWORKLISTITEM>-CAWORKLISTUUID = 1.
<ICAWORKLISTITEM>-CAWORKLISTNUMBER = 1.
<ICAWORKLISTITEM>-BUSINESSPARTNER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICAWORKLISTITEM-TRANSACTIONCURRENCY, sy-vline,
  WA_ICAWORKLISTITEM-CAWORKLISTITEMAMTINTRANSCRCY, sy-vline,
  WA_ICAWORKLISTITEM-CAWORKLISTPRIORITY, sy-vline,
  WA_ICAWORKLISTITEM-CAWORKLISTDUEDATE, sy-vline,
  WA_ICAWORKLISTITEM-CACLARIFICATIONACTIONCODE, sy-vline,
  WA_ICAWORKLISTITEM-CAWORKLISTITEMREFERENCE1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICAWORKLISTITEM 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_ICAWORKLISTITEM 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_ICAWORKLISTITEM INTO WA_ICAWORKLISTITEM.


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

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICAWORKLISTITEM-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAWORKLISTITEM-BUSINESSPARTNER.
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_ICAWORKLISTITEM_STR, 
MANDT TYPE STRING,
CAWORKLISTITEMUUID TYPE STRING,
CAWORKLISTUUID TYPE STRING,
CAWORKLISTNUMBER TYPE STRING,
BUSINESSPARTNER TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAWORKLISTITEMAMTINTRANSCRCY TYPE STRING,
CAWORKLISTPRIORITY TYPE STRING,
CAWORKLISTDUEDATE TYPE STRING,
CACLARIFICATIONACTIONCODE TYPE STRING,
CAWORKLISTITEMREFERENCE1 TYPE STRING,
CAWORKLISTITEMREFERENCE2 TYPE STRING,
CAWORKLISTITEMREFERENCE3 TYPE STRING,
CACLRFCTNSTATUS TYPE STRING,
CACLRFCTNLASTPROCESSEDBYUSER TYPE STRING,
CACLRFCTNLOCKEDTODATE TYPE STRING,
CACLRFCTNPROCGSTATUS TYPE STRING,
CACLRFCTNRESUBMSNDATE TYPE STRING,
CACLRFCTNNMBROFWORKFLOWS TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
CREATIONDATETIME TYPE STRING,
CAINTERNALAPPCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICAWORKLISTITEM_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_ICAWORKLISTITEM_STR-MANDT sy-vline 
WA_ICAWORKLISTITEM_STR-CAWORKLISTITEMUUID sy-vline 
WA_ICAWORKLISTITEM_STR-CAWORKLISTUUID sy-vline 
WA_ICAWORKLISTITEM_STR-CAWORKLISTNUMBER sy-vline 
WA_ICAWORKLISTITEM_STR-BUSINESSPARTNER sy-vline 
WA_ICAWORKLISTITEM_STR-TRANSACTIONCURRENCY sy-vline 
WA_ICAWORKLISTITEM_STR-CAWORKLISTITEMAMTINTRANSCRCY sy-vline 
WA_ICAWORKLISTITEM_STR-CAWORKLISTPRIORITY sy-vline 
WA_ICAWORKLISTITEM_STR-CAWORKLISTDUEDATE sy-vline 
WA_ICAWORKLISTITEM_STR-CACLARIFICATIONACTIONCODE sy-vline 
WA_ICAWORKLISTITEM_STR-CAWORKLISTITEMREFERENCE1 sy-vline 
WA_ICAWORKLISTITEM_STR-CAWORKLISTITEMREFERENCE2 sy-vline 
WA_ICAWORKLISTITEM_STR-CAWORKLISTITEMREFERENCE3 sy-vline 
WA_ICAWORKLISTITEM_STR-CACLRFCTNSTATUS sy-vline 
WA_ICAWORKLISTITEM_STR-CACLRFCTNLASTPROCESSEDBYUSER sy-vline 
WA_ICAWORKLISTITEM_STR-CACLRFCTNLOCKEDTODATE sy-vline 
WA_ICAWORKLISTITEM_STR-CACLRFCTNPROCGSTATUS sy-vline 
WA_ICAWORKLISTITEM_STR-CACLRFCTNRESUBMSNDATE sy-vline 
WA_ICAWORKLISTITEM_STR-CACLRFCTNNMBROFWORKFLOWS sy-vline 
WA_ICAWORKLISTITEM_STR-CREATEDBYUSER sy-vline 
WA_ICAWORKLISTITEM_STR-CREATIONDATE sy-vline 
WA_ICAWORKLISTITEM_STR-CREATIONTIME sy-vline 
WA_ICAWORKLISTITEM_STR-CREATIONDATETIME sy-vline 
WA_ICAWORKLISTITEM_STR-CAINTERNALAPPCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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