ABAP Select data from SAP table HRDESV_BA_S_ASSIGN_WORKLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRDESV_BA_S_ASSIGN_WORKLIST
*  INTO TABLE @DATA(IT_HRDESV_BA_S_ASSIGN_WORKLIST2).
*--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_HRDESV_BA_S_ASSIGN_WORKLIST INDEX 1 INTO DATA(WA_HRDESV_BA_S_ASSIGN_WORKLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRDESV_BA_S_ASSIGN_WORKLIST>-MDTYP = 1.
<HRDESV_BA_S_ASSIGN_WORKLIST>-AZVU = 1.
<HRDESV_BA_S_ASSIGN_WORKLIST>-DSID = 1.
<HRDESV_BA_S_ASSIGN_WORKLIST>-ENAME = 1.
<HRDESV_BA_S_ASSIGN_WORKLIST>-VSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRDESV_BA_S_ASSIGN_WORKLIST-MZBEG, sy-vline,
  WA_HRDESV_BA_S_ASSIGN_WORKLIST-MZEND, sy-vline,
  WA_HRDESV_BA_S_ASSIGN_WORKLIST-AVEND, sy-vline,
  WA_HRDESV_BA_S_ASSIGN_WORKLIST-BBNRVU, sy-vline,
  WA_HRDESV_BA_S_ASSIGN_WORKLIST-GUID, sy-vline,
  WA_HRDESV_BA_S_ASSIGN_WORKLIST-RFCDST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRDESV_BA_S_ASSIGN_WORKLIST 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_HRDESV_BA_S_ASSIGN_WORKLIST 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_HRDESV_BA_S_ASSIGN_WORKLIST INTO WA_HRDESV_BA_S_ASSIGN_WORKLIST.


*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_HRDESV_BA_S_ASSIGN_WORKLIST_STR, 
MDTYP TYPE STRING,
AZVU TYPE STRING,
DSID TYPE STRING,
ENAME TYPE STRING,
VSNR TYPE STRING,
MZBEG TYPE STRING,
MZEND TYPE STRING,
AVEND TYPE STRING,
BBNRVU TYPE STRING,
GUID TYPE STRING,
RFCDST TYPE STRING,
SYST TYPE STRING,
MANDT TYPE STRING,
PERNR TYPE STRING,
OGUID TYPE STRING,
TRF_OK TYPE STRING,
NOTIF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRDESV_BA_S_ASSIGN_WORKLIST_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_HRDESV_BA_S_ASSIGN_WORKLIST_STR-MDTYP sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-AZVU sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-DSID sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-ENAME sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-VSNR sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-MZBEG sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-MZEND sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-AVEND sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-BBNRVU sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-GUID sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-RFCDST sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-SYST sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-MANDT sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-PERNR sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-OGUID sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-TRF_OK sy-vline 
WA_HRDESV_BA_S_ASSIGN_WORKLIST_STR-NOTIF sy-vline      INTO ld_text SEPARATED BY SPACE.

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