ABAP Select data from SAP table KWS_IO_PROP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KWS_IO_PROP
*  INTO TABLE @DATA(IT_KWS_IO_PROP2).
*--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_KWS_IO_PROP INDEX 1 INTO DATA(WA_KWS_IO_PROP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KWS_IO_PROP>-CLASS = 1.
<KWS_IO_PROP>-OBJID = 1.
<KWS_IO_PROP>-CLASS_TXT = 1.
<KWS_IO_PROP>-IWB_TECH_NAME = 1.
<KWS_IO_PROP>-IWB_RESPONSIBLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KWS_IO_PROP-IWB_TYPE, sy-vline,
  WA_KWS_IO_PROP-IWB_TYPE_TXT, sy-vline,
  WA_KWS_IO_PROP-IWB_OWNER_NAMESPACE, sy-vline,
  WA_KWS_IO_PROP-IWB_FOLDER_ID, sy-vline,
  WA_KWS_IO_PROP-F_CLASS, sy-vline,
  WA_KWS_IO_PROP-F_TECH_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KWS_IO_PROP 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_KWS_IO_PROP 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_KWS_IO_PROP INTO WA_KWS_IO_PROP.


*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 LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KWS_IO_PROP-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KWS_IO_PROP-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field IWB_ORIGINAL_LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KWS_IO_PROP-IWB_ORIGINAL_LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KWS_IO_PROP-IWB_ORIGINAL_LANGUAGE.
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_KWS_IO_PROP_STR, 
CLASS TYPE STRING,
OBJID TYPE STRING,
CLASS_TXT TYPE STRING,
IWB_TECH_NAME TYPE STRING,
IWB_RESPONSIBLE TYPE STRING,
IWB_TYPE TYPE STRING,
IWB_TYPE_TXT TYPE STRING,
IWB_OWNER_NAMESPACE TYPE STRING,
IWB_FOLDER_ID TYPE STRING,
F_CLASS TYPE STRING,
F_TECH_NAME TYPE STRING,
IWB_DELIVER TYPE STRING,
IWB_FOLDER_GROUP TYPE STRING,
AREA TYPE STRING,
AREA_TXT TYPE STRING,
T_STATUS TYPE STRING,
T_STATUS_TXT TYPE STRING,
DESCRIPTION TYPE STRING,
LANGUAGE TYPE STRING,
LANGUAGE_TXT TYPE STRING,
RELEASE TYPE STRING,
IWB_INDUSTRY TYPE STRING,
IWB_COUNTRY TYPE STRING,
IWB_COUNTRY_TXT TYPE STRING,
IWB_ORIGINAL_LANGUAGE TYPE STRING,
IWB_ORIGINAL_LANGUAGE_TXT TYPE STRING,
IWB_LEVEL TYPE STRING,
LAST_CHANGED_BY TYPE STRING,
LAST_CHANGED_AT TYPE STRING,
CHECKOUT_USER TYPE STRING,
CHECKED_OUT TYPE STRING,
IWB_STATE TYPE STRING,
IWB_STATE_TXT TYPE STRING,
IWB_TRANS_STATE TYPE STRING,
IWB_NEVER_TRANSLATE TYPE STRING,
IWB_TRANS_GRAPH TYPE STRING,
CLASS_TYPE TYPE STRING,
SOURCE_FORMAT TYPE STRING,
EDIT_PROCESS TYPE STRING,
VISIBLE_IN_CONTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KWS_IO_PROP_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_KWS_IO_PROP_STR-CLASS sy-vline 
WA_KWS_IO_PROP_STR-OBJID sy-vline 
WA_KWS_IO_PROP_STR-CLASS_TXT sy-vline 
WA_KWS_IO_PROP_STR-IWB_TECH_NAME sy-vline 
WA_KWS_IO_PROP_STR-IWB_RESPONSIBLE sy-vline 
WA_KWS_IO_PROP_STR-IWB_TYPE sy-vline 
WA_KWS_IO_PROP_STR-IWB_TYPE_TXT sy-vline 
WA_KWS_IO_PROP_STR-IWB_OWNER_NAMESPACE sy-vline 
WA_KWS_IO_PROP_STR-IWB_FOLDER_ID sy-vline 
WA_KWS_IO_PROP_STR-F_CLASS sy-vline 
WA_KWS_IO_PROP_STR-F_TECH_NAME sy-vline 
WA_KWS_IO_PROP_STR-IWB_DELIVER sy-vline 
WA_KWS_IO_PROP_STR-IWB_FOLDER_GROUP sy-vline 
WA_KWS_IO_PROP_STR-AREA sy-vline 
WA_KWS_IO_PROP_STR-AREA_TXT sy-vline 
WA_KWS_IO_PROP_STR-T_STATUS sy-vline 
WA_KWS_IO_PROP_STR-T_STATUS_TXT sy-vline 
WA_KWS_IO_PROP_STR-DESCRIPTION sy-vline 
WA_KWS_IO_PROP_STR-LANGUAGE sy-vline 
WA_KWS_IO_PROP_STR-LANGUAGE_TXT sy-vline 
WA_KWS_IO_PROP_STR-RELEASE sy-vline 
WA_KWS_IO_PROP_STR-IWB_INDUSTRY sy-vline 
WA_KWS_IO_PROP_STR-IWB_COUNTRY sy-vline 
WA_KWS_IO_PROP_STR-IWB_COUNTRY_TXT sy-vline 
WA_KWS_IO_PROP_STR-IWB_ORIGINAL_LANGUAGE sy-vline 
WA_KWS_IO_PROP_STR-IWB_ORIGINAL_LANGUAGE_TXT sy-vline 
WA_KWS_IO_PROP_STR-IWB_LEVEL sy-vline 
WA_KWS_IO_PROP_STR-LAST_CHANGED_BY sy-vline 
WA_KWS_IO_PROP_STR-LAST_CHANGED_AT sy-vline 
WA_KWS_IO_PROP_STR-CHECKOUT_USER sy-vline 
WA_KWS_IO_PROP_STR-CHECKED_OUT sy-vline 
WA_KWS_IO_PROP_STR-IWB_STATE sy-vline 
WA_KWS_IO_PROP_STR-IWB_STATE_TXT sy-vline 
WA_KWS_IO_PROP_STR-IWB_TRANS_STATE sy-vline 
WA_KWS_IO_PROP_STR-IWB_NEVER_TRANSLATE sy-vline 
WA_KWS_IO_PROP_STR-IWB_TRANS_GRAPH sy-vline 
WA_KWS_IO_PROP_STR-CLASS_TYPE sy-vline 
WA_KWS_IO_PROP_STR-SOURCE_FORMAT sy-vline 
WA_KWS_IO_PROP_STR-EDIT_PROCESS sy-vline 
WA_KWS_IO_PROP_STR-VISIBLE_IN_CONTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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