ABAP Select data from SAP table CEHSTASK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CEHSTASK
*  INTO TABLE @DATA(IT_CEHSTASK2).
*--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_CEHSTASK INDEX 1 INTO DATA(WA_CEHSTASK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CEHSTASK>-MANDT = 1.
<CEHSTASK>-WORKFLOWTASKINTERNALID = 1.
<CEHSTASK>-EHSTASKDEFINITIONUUID = 1.
<CEHSTASK>-WORKFLOWTASKNAME = 1.
<CEHSTASK>-EHSTASKPRIORITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CEHSTASK-EHSTASKPRIORITYCRITICALITY, sy-vline,
  WA_CEHSTASK-WORKFLOWTASKTYPE, sy-vline,
  WA_CEHSTASK-WORKFLOWTASKSTATUS, sy-vline,
  WA_CEHSTASK-WORKFLOWTASKDEFINITION, sy-vline,
  WA_CEHSTASK-WRKFLWTSKCOMPLETIONUTCDATETIME, sy-vline,
  WA_CEHSTASK-TOPLEVELWORKFLOWTASK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CEHSTASK 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_CEHSTASK 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_CEHSTASK INTO WA_CEHSTASK.


*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_CEHSTASK_STR, 
MANDT TYPE STRING,
WORKFLOWTASKINTERNALID TYPE STRING,
EHSTASKDEFINITIONUUID TYPE STRING,
WORKFLOWTASKNAME TYPE STRING,
EHSTASKPRIORITY TYPE STRING,
EHSTASKPRIORITYCRITICALITY TYPE STRING,
WORKFLOWTASKTYPE TYPE STRING,
WORKFLOWTASKSTATUS TYPE STRING,
WORKFLOWTASKDEFINITION TYPE STRING,
WRKFLWTSKCOMPLETIONUTCDATETIME TYPE STRING,
TOPLEVELWORKFLOWTASK TYPE STRING,
EHSTASKINSTANCEPROCESSORUSER TYPE STRING,
WORKFLOWTASKCURRENTUSER TYPE STRING,
EHSTASKINSTANCESTEPNODEID TYPE STRING,
EHSTASKASSIGNEDLOCROLE TYPE STRING,
EHSTASKAPPROVERLOCROLE TYPE STRING,
EHSTASKHOSTOBJECTINSTANCE TYPE STRING,
EHSTASKHOSTOBJECTADAPTERCLASS TYPE STRING,
WRKFLWTSKCREATIONUTCDATETIME TYPE STRING,
EHSTASKSTATE TYPE STRING,
EHSTASKSTATETEXT TYPE STRING,
EHSTASKCHILDREN TYPE STRING,
EHSTASKINSTANCESTEPPOSITION TYPE STRING,
EHSTASKINSTANCEPROCESSORNAME TYPE STRING,
EHSTASKDESCRIPTION TYPE STRING,
INCIDENTHASACCESSRESTRICTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CEHSTASK_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_CEHSTASK_STR-MANDT sy-vline 
WA_CEHSTASK_STR-WORKFLOWTASKINTERNALID sy-vline 
WA_CEHSTASK_STR-EHSTASKDEFINITIONUUID sy-vline 
WA_CEHSTASK_STR-WORKFLOWTASKNAME sy-vline 
WA_CEHSTASK_STR-EHSTASKPRIORITY sy-vline 
WA_CEHSTASK_STR-EHSTASKPRIORITYCRITICALITY sy-vline 
WA_CEHSTASK_STR-WORKFLOWTASKTYPE sy-vline 
WA_CEHSTASK_STR-WORKFLOWTASKSTATUS sy-vline 
WA_CEHSTASK_STR-WORKFLOWTASKDEFINITION sy-vline 
WA_CEHSTASK_STR-WRKFLWTSKCOMPLETIONUTCDATETIME sy-vline 
WA_CEHSTASK_STR-TOPLEVELWORKFLOWTASK sy-vline 
WA_CEHSTASK_STR-EHSTASKINSTANCEPROCESSORUSER sy-vline 
WA_CEHSTASK_STR-WORKFLOWTASKCURRENTUSER sy-vline 
WA_CEHSTASK_STR-EHSTASKINSTANCESTEPNODEID sy-vline 
WA_CEHSTASK_STR-EHSTASKASSIGNEDLOCROLE sy-vline 
WA_CEHSTASK_STR-EHSTASKAPPROVERLOCROLE sy-vline 
WA_CEHSTASK_STR-EHSTASKHOSTOBJECTINSTANCE sy-vline 
WA_CEHSTASK_STR-EHSTASKHOSTOBJECTADAPTERCLASS sy-vline 
WA_CEHSTASK_STR-WRKFLWTSKCREATIONUTCDATETIME sy-vline 
WA_CEHSTASK_STR-EHSTASKSTATE sy-vline 
WA_CEHSTASK_STR-EHSTASKSTATETEXT sy-vline 
WA_CEHSTASK_STR-EHSTASKCHILDREN sy-vline 
WA_CEHSTASK_STR-EHSTASKINSTANCESTEPPOSITION sy-vline 
WA_CEHSTASK_STR-EHSTASKINSTANCEPROCESSORNAME sy-vline 
WA_CEHSTASK_STR-EHSTASKDESCRIPTION sy-vline 
WA_CEHSTASK_STR-INCIDENTHASACCESSRESTRICTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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