ABAP Select data from SAP table GHO_S_WORKLIST_DETAILS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GHO_S_WORKLIST_DETAILS
*  INTO TABLE @DATA(IT_GHO_S_WORKLIST_DETAILS2).
*--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_GHO_S_WORKLIST_DETAILS INDEX 1 INTO DATA(WA_GHO_S_WORKLIST_DETAILS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GHO_S_WORKLIST_DETAILS>-PRODUCTIONNETWORK = 1.
<GHO_S_WORKLIST_DETAILS>-NETWORKOBJECT = 1.
<GHO_S_WORKLIST_DETAILS>-NETOBJ_DESC = 1.
<GHO_S_WORKLIST_DETAILS>-NETWORKOBJECT_TYPE = 1.
<GHO_S_WORKLIST_DETAILS>-NETOBJ_TYPE_DESC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GHO_S_WORKLIST_DETAILS-MSMT_STARTDATE, sy-vline,
  WA_GHO_S_WORKLIST_DETAILS-MSMT_ENDDATE, sy-vline,
  WA_GHO_S_WORKLIST_DETAILS-FREQUENCY, sy-vline,
  WA_GHO_S_WORKLIST_DETAILS-FIELDDATA, sy-vline,
  WA_GHO_S_WORKLIST_DETAILS-FIELDDATA_DESC, sy-vline,
  WA_GHO_S_WORKLIST_DETAILS-DATE_PICK_OPT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GHO_S_WORKLIST_DETAILS 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_GHO_S_WORKLIST_DETAILS 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_GHO_S_WORKLIST_DETAILS INTO WA_GHO_S_WORKLIST_DETAILS.


*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 TPLNR, internal->external for field PRODUCTIONNETWORK
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_GHO_S_WORKLIST_DETAILS-PRODUCTIONNETWORK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GHO_S_WORKLIST_DETAILS-PRODUCTIONNETWORK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field NETWORKOBJECT
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_GHO_S_WORKLIST_DETAILS-NETWORKOBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GHO_S_WORKLIST_DETAILS-NETWORKOBJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GHONO, internal->external for field ORIGINATING_MP
CALL FUNCTION 'CONVERSION_EXIT_GHONO_OUTPUT'
  EXPORTING
    input =                      WA_GHO_S_WORKLIST_DETAILS-ORIGINATING_MP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GHO_S_WORKLIST_DETAILS-ORIGINATING_MP.
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_GHO_S_WORKLIST_DETAILS_STR, 
PRODUCTIONNETWORK TYPE STRING,
NETWORKOBJECT TYPE STRING,
NETOBJ_DESC TYPE STRING,
NETWORKOBJECT_TYPE TYPE STRING,
NETOBJ_TYPE_DESC TYPE STRING,
MSMT_STARTDATE TYPE STRING,
MSMT_ENDDATE TYPE STRING,
FREQUENCY TYPE STRING,
FIELDDATA TYPE STRING,
FIELDDATA_DESC TYPE STRING,
DATE_PICK_OPT TYPE STRING,
NODRES TYPE STRING,
EXISTENCE_FLAG TYPE STRING,
ADDL_STARTDATE TYPE STRING,
ADDL_ENDDATE TYPE STRING,
ADDNL_KEY TYPE STRING,
FD_KEY TYPE STRING,
PS_FILTER TYPE STRING,
MEAS_CAT_ID TYPE STRING,
MEAS_CAT_ID_DESC TYPE STRING,
QUANTITY_TYPE TYPE STRING,
REC_COUNT TYPE STRING,
MULTIPLE_ROW TYPE STRING,
FIELDDATADETAILS TYPE STRING,
ORIGINATING_MP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GHO_S_WORKLIST_DETAILS_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_GHO_S_WORKLIST_DETAILS_STR-PRODUCTIONNETWORK sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-NETWORKOBJECT sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-NETOBJ_DESC sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-NETWORKOBJECT_TYPE sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-NETOBJ_TYPE_DESC sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-MSMT_STARTDATE sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-MSMT_ENDDATE sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-FREQUENCY sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-FIELDDATA sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-FIELDDATA_DESC sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-DATE_PICK_OPT sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-NODRES sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-EXISTENCE_FLAG sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-ADDL_STARTDATE sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-ADDL_ENDDATE sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-ADDNL_KEY sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-FD_KEY sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-PS_FILTER sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-MEAS_CAT_ID sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-MEAS_CAT_ID_DESC sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-QUANTITY_TYPE sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-REC_COUNT sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-MULTIPLE_ROW sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-FIELDDATADETAILS sy-vline 
WA_GHO_S_WORKLIST_DETAILS_STR-ORIGINATING_MP sy-vline      INTO ld_text SEPARATED BY SPACE.

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