ABAP Select data from SAP table ICL_TASKS_WF_SCR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICL_TASKS_WF_SCR 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_TASKS_WF_SCR. 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_TASKS_WF_SCR 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_TASKS_WF_SCR TYPE STANDARD TABLE OF ICL_TASKS_WF_SCR,
      WA_ICL_TASKS_WF_SCR TYPE ICL_TASKS_WF_SCR,
      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_TASKS_WF_SCR> TYPE ICL_TASKS_WF_SCR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_TASKS_WF_SCR
*  INTO TABLE @DATA(IT_ICL_TASKS_WF_SCR2).
*--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_TASKS_WF_SCR INDEX 1 INTO DATA(WA_ICL_TASKS_WF_SCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_TASKS_WF_SCR>-WI_ID = 1.
<ICL_TASKS_WF_SCR>-WI_TYPE = 1.
<ICL_TASKS_WF_SCR>-WI_CREATOR = 1.
<ICL_TASKS_WF_SCR>-WI_LANG = 1.
<ICL_TASKS_WF_SCR>-WI_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_TASKS_WF_SCR-WI_RHTEXT, sy-vline,
  WA_ICL_TASKS_WF_SCR-WI_CD, sy-vline,
  WA_ICL_TASKS_WF_SCR-WI_CT, sy-vline,
  WA_ICL_TASKS_WF_SCR-WI_AAGENT, sy-vline,
  WA_ICL_TASKS_WF_SCR-WI_CHCKWI, sy-vline,
  WA_ICL_TASKS_WF_SCR-WI_RH_TASK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_TASKS_WF_SCR 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_TASKS_WF_SCR 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_TASKS_WF_SCR INTO WA_ICL_TASKS_WF_SCR.


*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 ISOLA, internal->external for field WI_LANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_TASKS_WF_SCR-WI_LANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_TASKS_WF_SCR-WI_LANG.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field CLAIM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_TASKS_WF_SCR-CLAIM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_TASKS_WF_SCR-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_TASKS_WF_SCR_STR, 
WI_ID TYPE STRING,
WI_TYPE TYPE STRING,
WI_CREATOR TYPE STRING,
WI_LANG TYPE STRING,
WI_TEXT TYPE STRING,
WI_RHTEXT TYPE STRING,
WI_CD TYPE STRING,
WI_CT TYPE STRING,
WI_AAGENT TYPE STRING,
WI_CHCKWI TYPE STRING,
WI_RH_TASK TYPE STRING,
WI_PRIO TYPE STRING,
WI_CONFIRM TYPE STRING,
WI_REJECT TYPE STRING,
WI_FORW_BY TYPE STRING,
WI_DISABLE TYPE STRING,
STATUSTEXT TYPE STRING,
WI_STAT TYPE STRING,
WI_LED TYPE STRING,
WI_LET TYPE STRING,
TYPETEXT TYPE STRING,
TCLASS TYPE STRING,
NOTE_EXIST TYPE STRING,
WI_DH_STAT TYPE STRING,
DHSTATEXT TYPE STRING,
NO_EXECUTE TYPE STRING,
WI_RELEASE TYPE STRING,
WI_CD_FTD TYPE STRING,
WI_CT_FTD TYPE STRING,
WI_LED_FTD TYPE STRING,
WI_LET_FTD TYPE STRING,
WI_AA_NAME TYPE STRING,
DEF_GUID TYPE STRING,
WI_CRTTS TYPE STRING,
NOTE_COUNT TYPE STRING,
WI_COMP_EV TYPE STRING,
PROCCAT TYPE STRING,
REFERENCE_NODEID TYPE STRING,
UNAME TYPE STRING,
UNAME_SHORT TYPE STRING,
ACTIVE TYPE STRING,
CLAIM TYPE STRING,
SUBCLAIM TYPE STRING,
ACTNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_TASKS_WF_SCR_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_TASKS_WF_SCR_STR-WI_ID sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_TYPE sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_CREATOR sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_LANG sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_TEXT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_RHTEXT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_CD sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_CT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_AAGENT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_CHCKWI sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_RH_TASK sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_PRIO sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_CONFIRM sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_REJECT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_FORW_BY sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_DISABLE sy-vline 
WA_ICL_TASKS_WF_SCR_STR-STATUSTEXT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_STAT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_LED sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_LET sy-vline 
WA_ICL_TASKS_WF_SCR_STR-TYPETEXT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-TCLASS sy-vline 
WA_ICL_TASKS_WF_SCR_STR-NOTE_EXIST sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_DH_STAT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-DHSTATEXT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-NO_EXECUTE sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_RELEASE sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_CD_FTD sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_CT_FTD sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_LED_FTD sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_LET_FTD sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_AA_NAME sy-vline 
WA_ICL_TASKS_WF_SCR_STR-DEF_GUID sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_CRTTS sy-vline 
WA_ICL_TASKS_WF_SCR_STR-NOTE_COUNT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-WI_COMP_EV sy-vline 
WA_ICL_TASKS_WF_SCR_STR-PROCCAT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-REFERENCE_NODEID sy-vline 
WA_ICL_TASKS_WF_SCR_STR-UNAME sy-vline 
WA_ICL_TASKS_WF_SCR_STR-UNAME_SHORT sy-vline 
WA_ICL_TASKS_WF_SCR_STR-ACTIVE sy-vline 
WA_ICL_TASKS_WF_SCR_STR-CLAIM sy-vline 
WA_ICL_TASKS_WF_SCR_STR-SUBCLAIM sy-vline 
WA_ICL_TASKS_WF_SCR_STR-ACTNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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