ABAP Select data from SAP table /ISDFPS/FDP_WFST_LIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ISDFPS/FDP_WFST_LIST 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 /ISDFPS/FDP_WFST_LIST. 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 /ISDFPS/FDP_WFST_LIST 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_/ISDFPS/FDP_WFST_LIST TYPE STANDARD TABLE OF /ISDFPS/FDP_WFST_LIST,
      WA_/ISDFPS/FDP_WFST_LIST TYPE /ISDFPS/FDP_WFST_LIST,
      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: </ISDFPS/FDP_WFST_LIST> TYPE /ISDFPS/FDP_WFST_LIST.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISDFPS/FDP_WFST_LIST
  INTO TABLE IT_/ISDFPS/FDP_WFST_LIST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/FDP_WFST_LIST
*  INTO TABLE @DATA(IT_/ISDFPS/FDP_WFST_LIST2).
*--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_/ISDFPS/FDP_WFST_LIST INDEX 1 INTO DATA(WA_/ISDFPS/FDP_WFST_LIST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISDFPS/FDP_WFST_LIST ASSIGNING </ISDFPS/FDP_WFST_LIST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/FDP_WFST_LIST>-MANDT = 1.
</ISDFPS/FDP_WFST_LIST>-REQUEST_ID = 1.
</ISDFPS/FDP_WFST_LIST>-ORIGINAL_LOGSYS = 1.
</ISDFPS/FDP_WFST_LIST>-ORIGINAL_WF_ID = 1.
</ISDFPS/FDP_WFST_LIST>-START_DATE = 1.

ENDLOOP.

LOOP AT IT_/ISDFPS/FDP_WFST_LIST INTO WA_/ISDFPS/FDP_WFST_LIST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/FDP_WFST_LIST-START_TIME, sy-vline,
  WA_/ISDFPS/FDP_WFST_LIST-TIME_LIMIT_DATE, sy-vline,
  WA_/ISDFPS/FDP_WFST_LIST-TIME_LIMIT_TIME, sy-vline,
  WA_/ISDFPS/FDP_WFST_LIST-STATUS, sy-vline,
  WA_/ISDFPS/FDP_WFST_LIST-DECENTRAL_LOGSYS, sy-vline,
  WA_/ISDFPS/FDP_WFST_LIST-PREQ_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/FDP_WFST_LIST 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_/ISDFPS/FDP_WFST_LIST 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_/ISDFPS/FDP_WFST_LIST INTO WA_/ISDFPS/FDP_WFST_LIST.


*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 ORIGINAL_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/FDP_WFST_LIST-ORIGINAL_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/FDP_WFST_LIST-ORIGINAL_LOGSYS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/FDP_WFST_LIST-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/FDP_WFST_LIST-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/FDP_WFST_LIST-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/FDP_WFST_LIST-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERNR_PREQ
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/FDP_WFST_LIST-SERNR_PREQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/FDP_WFST_LIST-SERNR_PREQ.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field DOC_MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/FDP_WFST_LIST-DOC_MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/FDP_WFST_LIST-DOC_MEINS.
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_/ISDFPS/FDP_WFST_LIST_STR, 
MANDT TYPE STRING,
REQUEST_ID TYPE STRING,
ORIGINAL_LOGSYS TYPE STRING,
ORIGINAL_WF_ID TYPE STRING,
START_DATE TYPE STRING,
START_TIME TYPE STRING,
TIME_LIMIT_DATE TYPE STRING,
TIME_LIMIT_TIME TYPE STRING,
STATUS TYPE STRING,
DECENTRAL_LOGSYS TYPE STRING,
PREQ_NO TYPE STRING,
PREQ_ITEM TYPE STRING,
PREQ_KEY TYPE STRING,
FORCE_TO_OBJID TYPE STRING,
FORCE_TO_TEXT TYPE STRING,
FORCE_TO_KEY TYPE STRING,
FORCE_FROM_OBJID TYPE STRING,
FORCE_FROM_TEXT TYPE STRING,
FORCE_FROM_KEY TYPE STRING,
PLANT TYPE STRING,
PLANT_TEXT TYPE STRING,
STORAGE_LOC TYPE STRING,
STOR_LOC_TEXT TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
BATCH TYPE STRING,
BATCH_TEXT TYPE STRING,
PSPNR TYPE STRING,
PSPNR_TEXT TYPE STRING,
SERNR_PREQ TYPE STRING,
HU_EXID TYPE STRING,
MANUAL_UPDATE TYPE STRING,
DOC_MEINS TYPE STRING,
DESIRED_QTY TYPE STRING,
CURRENT_QTY TYPE STRING,
CONFIRMED TYPE STRING,
CONFIRMED_QTY TYPE STRING,
SERVMAN_PERSNO TYPE STRING,
SERVMAN_TEXT TYPE STRING,
WI_FOR_POSTING TYPE STRING,
POSTED_SCAPPED TYPE STRING,
POSTED_QTY TYPE STRING,
FLAG_LOAN TYPE STRING,
RETURN_DATE TYPE STRING,
STATUS_ICON TYPE STRING,
PRIO TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/FDP_WFST_LIST_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_/ISDFPS/FDP_WFST_LIST_STR-MANDT sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-REQUEST_ID sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-ORIGINAL_LOGSYS sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-ORIGINAL_WF_ID sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-START_DATE sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-START_TIME sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-TIME_LIMIT_DATE sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-TIME_LIMIT_TIME sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-STATUS sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-DECENTRAL_LOGSYS sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-PREQ_NO sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-PREQ_ITEM sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-PREQ_KEY sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-FORCE_TO_OBJID sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-FORCE_TO_TEXT sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-FORCE_TO_KEY sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-FORCE_FROM_OBJID sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-FORCE_FROM_TEXT sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-FORCE_FROM_KEY sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-PLANT sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-PLANT_TEXT sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-STORAGE_LOC sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-STOR_LOC_TEXT sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-MATNR sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-MAKTX sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-BATCH sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-BATCH_TEXT sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-PSPNR sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-PSPNR_TEXT sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-SERNR_PREQ sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-HU_EXID sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-MANUAL_UPDATE sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-DOC_MEINS sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-DESIRED_QTY sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-CURRENT_QTY sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-CONFIRMED sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-CONFIRMED_QTY sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-SERVMAN_PERSNO sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-SERVMAN_TEXT sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-WI_FOR_POSTING sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-POSTED_SCAPPED sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-POSTED_QTY sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-FLAG_LOAN sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-RETURN_DATE sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-STATUS_ICON sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-PRIO sy-vline 
WA_/ISDFPS/FDP_WFST_LIST_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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