ABAP Select data from SAP table IMDGCRWFTASK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMDGCRWFTASK
*  INTO TABLE @DATA(IT_IMDGCRWFTASK2).
*--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_IMDGCRWFTASK INDEX 1 INTO DATA(WA_IMDGCRWFTASK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMDGCRWFTASK>-MANDT = 1.
<IMDGCRWFTASK>-WORKFLOWTASKINTERNALID = 1.
<IMDGCRWFTASK>-WORKFLOWTASKDEFINITION = 1.
<IMDGCRWFTASK>-TOPLEVELWORKFLOWTASK = 1.
<IMDGCRWFTASK>-PARENTWORKFLOWTASK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMDGCRWFTASK-TOPLEVELWORKFLOWTASKDEFINITION, sy-vline,
  WA_IMDGCRWFTASK-WORKFLOWTASKTYPE, sy-vline,
  WA_IMDGCRWFTASK-WORKFLOWTASKSTATUS, sy-vline,
  WA_IMDGCRWFTASK-MDGOVCHGREQWRKFLWTSKCRTNDTE, sy-vline,
  WA_IMDGCRWFTASK-MDGOVCHGREQWRKFLWTSKCOMPLTNDTE, sy-vline,
  WA_IMDGCRWFTASK-MDGOVCHGREQWRKFLWTSKCRTNYEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMDGCRWFTASK 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_IMDGCRWFTASK 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_IMDGCRWFTASK INTO WA_IMDGCRWFTASK.


*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 MDGOVCHANGEREQUEST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMDGCRWFTASK-MDGOVCHANGEREQUEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMDGCRWFTASK-MDGOVCHANGEREQUEST.
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_IMDGCRWFTASK_STR, 
MANDT TYPE STRING,
WORKFLOWTASKINTERNALID TYPE STRING,
WORKFLOWTASKDEFINITION TYPE STRING,
TOPLEVELWORKFLOWTASK TYPE STRING,
PARENTWORKFLOWTASK TYPE STRING,
TOPLEVELWORKFLOWTASKDEFINITION TYPE STRING,
WORKFLOWTASKTYPE TYPE STRING,
WORKFLOWTASKSTATUS TYPE STRING,
MDGOVCHGREQWRKFLWTSKCRTNDTE TYPE STRING,
MDGOVCHGREQWRKFLWTSKCOMPLTNDTE TYPE STRING,
MDGOVCHGREQWRKFLWTSKCRTNYEAR TYPE STRING,
MDGOVCHGREQWRKFLWTSKCRTNMONTH TYPE STRING,
MDGOVCHGREQWRKFLWTSKCRTNTME TYPE STRING,
MDGOVCHGREQWRKFLWTSKCOMPLTNTME TYPE STRING,
MDGOVWRKFLWTSKCOMPLTNMONTH TYPE STRING,
MDGOVWRKFLWTSKCOMPLTNYEAR TYPE STRING,
WRKFLWTSKCREATIONUTCDATETIME TYPE STRING,
WRKFLWTSKCOMPLETIONUTCDATETIME TYPE STRING,
WORKFLOWTASKCURRENTUSER TYPE STRING,
WORKFLOWTASKCREATEDBYUSER TYPE STRING,
MDGOVCHANGEREQUEST TYPE STRING,
MDGOVCHGREQNMBROFWRKFLWTSKS TYPE STRING,
MDGOVWRKFLWTSKAVGPROCGDURN TYPE STRING,
MDGOVWRKFLWTSKAVGPROCGHRS TYPE STRING,
MDGOVWRKFLWTSKAVGPROCGMINS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMDGCRWFTASK_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_IMDGCRWFTASK_STR-MANDT sy-vline 
WA_IMDGCRWFTASK_STR-WORKFLOWTASKINTERNALID sy-vline 
WA_IMDGCRWFTASK_STR-WORKFLOWTASKDEFINITION sy-vline 
WA_IMDGCRWFTASK_STR-TOPLEVELWORKFLOWTASK sy-vline 
WA_IMDGCRWFTASK_STR-PARENTWORKFLOWTASK sy-vline 
WA_IMDGCRWFTASK_STR-TOPLEVELWORKFLOWTASKDEFINITION sy-vline 
WA_IMDGCRWFTASK_STR-WORKFLOWTASKTYPE sy-vline 
WA_IMDGCRWFTASK_STR-WORKFLOWTASKSTATUS sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVCHGREQWRKFLWTSKCRTNDTE sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVCHGREQWRKFLWTSKCOMPLTNDTE sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVCHGREQWRKFLWTSKCRTNYEAR sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVCHGREQWRKFLWTSKCRTNMONTH sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVCHGREQWRKFLWTSKCRTNTME sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVCHGREQWRKFLWTSKCOMPLTNTME sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVWRKFLWTSKCOMPLTNMONTH sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVWRKFLWTSKCOMPLTNYEAR sy-vline 
WA_IMDGCRWFTASK_STR-WRKFLWTSKCREATIONUTCDATETIME sy-vline 
WA_IMDGCRWFTASK_STR-WRKFLWTSKCOMPLETIONUTCDATETIME sy-vline 
WA_IMDGCRWFTASK_STR-WORKFLOWTASKCURRENTUSER sy-vline 
WA_IMDGCRWFTASK_STR-WORKFLOWTASKCREATEDBYUSER sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVCHANGEREQUEST sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVCHGREQNMBROFWRKFLWTSKS sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVWRKFLWTSKAVGPROCGDURN sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVWRKFLWTSKAVGPROCGHRS sy-vline 
WA_IMDGCRWFTASK_STR-MDGOVWRKFLWTSKAVGPROCGMINS sy-vline      INTO ld_text SEPARATED BY SPACE.

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