ABAP Select data from SAP table IFW_WORKLIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IFW_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 IFW_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 IFW_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_IFW_WORKLIST TYPE STANDARD TABLE OF IFW_WORKLIST,
      WA_IFW_WORKLIST TYPE IFW_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: <IFW_WORKLIST> TYPE IFW_WORKLIST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFW_WORKLIST
*  INTO TABLE @DATA(IT_IFW_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_IFW_WORKLIST INDEX 1 INTO DATA(WA_IFW_WORKLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFW_WORKLIST>-CLIENT = 1.
<IFW_WORKLIST>-ROOT_DOC_TYPE = 1.
<IFW_WORKLIST>-ROOT_DOC = 1.
<IFW_WORKLIST>-BUKRS = 1.
<IFW_WORKLIST>-EKORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFW_WORKLIST-EKGRP, sy-vline,
  WA_IFW_WORKLIST-VKORG, sy-vline,
  WA_IFW_WORKLIST-VTWEG, sy-vline,
  WA_IFW_WORKLIST-SPART, sy-vline,
  WA_IFW_WORKLIST-KUNAG, sy-vline,
  WA_IFW_WORKLIST-LIFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFW_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_IFW_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_IFW_WORKLIST INTO WA_IFW_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.

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

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

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IFW_WORKLIST-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFW_WORKLIST-LIFNR.
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_IFW_WORKLIST_STR, 
CLIENT TYPE STRING,
ROOT_DOC_TYPE TYPE STRING,
ROOT_DOC TYPE STRING,
BUKRS TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KUNAG TYPE STRING,
LIFNR TYPE STRING,
XBLNR TYPE STRING,
WL_STATUS TYPE STRING,
LAST_CALC TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
TIMESTAMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFW_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_IFW_WORKLIST_STR-CLIENT sy-vline 
WA_IFW_WORKLIST_STR-ROOT_DOC_TYPE sy-vline 
WA_IFW_WORKLIST_STR-ROOT_DOC sy-vline 
WA_IFW_WORKLIST_STR-BUKRS sy-vline 
WA_IFW_WORKLIST_STR-EKORG sy-vline 
WA_IFW_WORKLIST_STR-EKGRP sy-vline 
WA_IFW_WORKLIST_STR-VKORG sy-vline 
WA_IFW_WORKLIST_STR-VTWEG sy-vline 
WA_IFW_WORKLIST_STR-SPART sy-vline 
WA_IFW_WORKLIST_STR-KUNAG sy-vline 
WA_IFW_WORKLIST_STR-LIFNR sy-vline 
WA_IFW_WORKLIST_STR-XBLNR sy-vline 
WA_IFW_WORKLIST_STR-WL_STATUS sy-vline 
WA_IFW_WORKLIST_STR-LAST_CALC sy-vline 
WA_IFW_WORKLIST_STR-ERDAT sy-vline 
WA_IFW_WORKLIST_STR-ERNAM sy-vline 
WA_IFW_WORKLIST_STR-TIMESTAMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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