ABAP Select data from SAP table IWFLWTEMPLATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWFLWTEMPLATE
*  INTO TABLE @DATA(IT_IWFLWTEMPLATE2).
*--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_IWFLWTEMPLATE INDEX 1 INTO DATA(WA_IWFLWTEMPLATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWFLWTEMPLATE>-MANDT = 1.
<IWFLWTEMPLATE>-WRKFLWTMPLUUID = 1.
<IWFLWTEMPLATE>-WRKFLWTMPLID = 1.
<IWFLWTEMPLATE>-WRKFLWTMPLNAME = 1.
<IWFLWTEMPLATE>-WRKFLWTMPLNAMESEARCH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWFLWTEMPLATE-WRKFLWTMPLNAMESEARCHA, sy-vline,
  WA_IWFLWTEMPLATE-WRKFLWTMPLNAMESEARCHC, sy-vline,
  WA_IWFLWTEMPLATE-WRKFLWSCEN, sy-vline,
  WA_IWFLWTEMPLATE-SAPAPPLICATIONCOMPONENT, sy-vline,
  WA_IWFLWTEMPLATE-WRKFLWSCENVERS, sy-vline,
  WA_IWFLWTEMPLATE-WRKFLWTMPLTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWFLWTEMPLATE 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_IWFLWTEMPLATE 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_IWFLWTEMPLATE INTO WA_IWFLWTEMPLATE.


*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 ISOLA, internal->external for field WRKFLWTMPLCRTEDLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_IWFLWTEMPLATE-WRKFLWTMPLCRTEDLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWFLWTEMPLATE-WRKFLWTMPLCRTEDLANG.
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_IWFLWTEMPLATE_STR, 
MANDT TYPE STRING,
WRKFLWTMPLUUID TYPE STRING,
WRKFLWTMPLID TYPE STRING,
WRKFLWTMPLNAME TYPE STRING,
WRKFLWTMPLNAMESEARCH TYPE STRING,
WRKFLWTMPLNAMESEARCHA TYPE STRING,
WRKFLWTMPLNAMESEARCHC TYPE STRING,
WRKFLWSCEN TYPE STRING,
SAPAPPLICATIONCOMPONENT TYPE STRING,
WRKFLWSCENVERS TYPE STRING,
WRKFLWTMPLTYPE TYPE STRING,
WRKFLWTMPLSTAGE TYPE STRING,
WRKFLWTMPLGENERICPRPTY1 TYPE STRING,
WRKFLWTMPLGENERICPRPTY2 TYPE STRING,
WRKFLWTMPLGENERICPRPTY3 TYPE STRING,
WRKFLWTMPLGENERICPRPTY4 TYPE STRING,
WRKFLWTMPLGENERICPRPTY5 TYPE STRING,
WRKFLWTMPLGENERICPRPTY6 TYPE STRING,
WRKFLWTMPLGENERICPRPTY7 TYPE STRING,
WRKFLWTMPLGENERICPRPTY8 TYPE STRING,
WRKFLWTMPLGENERICPRPTY9 TYPE STRING,
WRKFLWTMPLGENERICPRPTY10 TYPE STRING,
WRKFLWTMPLCRTEDLANG TYPE STRING,
WRKFLWTMPLCRTEDUSR TYPE STRING,
WRKFLWTMPLCRTEDUTCDTETME TYPE STRING,
WRKFLWTMPLLASTCHGDUSR TYPE STRING,
WRKFLWTMPLLASTCHGDUTCDTETME TYPE STRING,
WRKFLWTMPLTRANSPORTED TYPE STRING,
ISDELETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWFLWTEMPLATE_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_IWFLWTEMPLATE_STR-MANDT sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLUUID sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLID sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLNAME sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLNAMESEARCH sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLNAMESEARCHA sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLNAMESEARCHC sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWSCEN sy-vline 
WA_IWFLWTEMPLATE_STR-SAPAPPLICATIONCOMPONENT sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWSCENVERS sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLTYPE sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLSTAGE sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY1 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY2 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY3 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY4 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY5 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY6 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY7 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY8 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY9 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLGENERICPRPTY10 sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLCRTEDLANG sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLCRTEDUSR sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLCRTEDUTCDTETME sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLLASTCHGDUSR sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLLASTCHGDUTCDTETME sy-vline 
WA_IWFLWTEMPLATE_STR-WRKFLWTMPLTRANSPORTED sy-vline 
WA_IWFLWTEMPLATE_STR-ISDELETED sy-vline      INTO ld_text SEPARATED BY SPACE.

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