ABAP Select data from SAP table /IWFND/S_MED_MDL_RW_PROPERTY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /IWFND/S_MED_MDL_RW_PROPERTY
*  INTO TABLE @DATA(IT_/IWFND/S_MED_MDL_RW_PROPERTY2).
*--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_/IWFND/S_MED_MDL_RW_PROPERTY INDEX 1 INTO DATA(WA_/IWFND/S_MED_MDL_RW_PROPERTY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</IWFND/S_MED_MDL_RW_PROPERTY>-NAME = 1.
</IWFND/S_MED_MDL_RW_PROPERTY>-EXTERNAL_NAME = 1.
</IWFND/S_MED_MDL_RW_PROPERTY>-DATA = 1.
</IWFND/S_MED_MDL_RW_PROPERTY>-UUID = 1.
</IWFND/S_MED_MDL_RW_PROPERTY>-DECIMALS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/IWFND/S_MED_MDL_RW_PROPERTY-UUID_TYPE, sy-vline,
  WA_/IWFND/S_MED_MDL_RW_PROPERTY-LENGTH, sy-vline,
  WA_/IWFND/S_MED_MDL_RW_PROPERTY-IS_ENABLED, sy-vline,
  WA_/IWFND/S_MED_MDL_RW_PROPERTY-SEMANTIC, sy-vline,
  WA_/IWFND/S_MED_MDL_RW_PROPERTY-CORE_TYPE, sy-vline,
  WA_/IWFND/S_MED_MDL_RW_PROPERTY-DOCU_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/IWFND/S_MED_MDL_RW_PROPERTY 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_/IWFND/S_MED_MDL_RW_PROPERTY 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_/IWFND/S_MED_MDL_RW_PROPERTY INTO WA_/IWFND/S_MED_MDL_RW_PROPERTY.


*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 DECIMALS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/IWFND/S_MED_MDL_RW_PROPERTY-DECIMALS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IWFND/S_MED_MDL_RW_PROPERTY-DECIMALS.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field INTERNAL_LENGTH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/IWFND/S_MED_MDL_RW_PROPERTY-INTERNAL_LENGTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IWFND/S_MED_MDL_RW_PROPERTY-INTERNAL_LENGTH.
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_/IWFND/S_MED_MDL_RW_PROPERTY_STR, 
NAME TYPE STRING,
EXTERNAL_NAME TYPE STRING,
DATA TYPE STRING,
UUID TYPE STRING,
DECIMALS TYPE STRING,
UUID_TYPE TYPE STRING,
LENGTH TYPE STRING,
IS_ENABLED TYPE STRING,
SEMANTIC TYPE STRING,
CORE_TYPE TYPE STRING,
DOCU_ID TYPE STRING,
INPUT_MASK TYPE STRING,
NAME TYPE STRING,
IS_KEY TYPE STRING,
IS_OPTIONAL TYPE STRING,
EXTERNAL_NAME TYPE STRING,
DATA TYPE STRING,
IS_READ_ONLY TYPE STRING,
DECIMALS TYPE STRING,
IS_TECHNICAL TYPE STRING,
LENGTH TYPE STRING,
CONTENT_TYPE TYPE STRING,
CORE_TYPE TYPE STRING,
CREATABLE TYPE STRING,
FILTERABLE TYPE STRING,
INPUT_MASK TYPE STRING,
IS_KEY TYPE STRING,
SORTABLE TYPE STRING,
IS_OPTIONAL TYPE STRING,
INTERNAL_TYPE TYPE STRING,
IS_READ_ONLY TYPE STRING,
INTERNAL_LENGTH TYPE STRING,
CONTENT_TYPE TYPE STRING,
IS_EXT_FIELD TYPE STRING,
CREATABLE TYPE STRING,
EDM_PRECISION TYPE STRING,
EDM_SCALE TYPE STRING,
FILTERABLE TYPE STRING,
SORTABLE TYPE STRING,
UNIT_PROPERTY TYPE STRING,
DEFAULT_VALUE TYPE STRING,
INTERNAL_TYPE TYPE STRING,
INTERNAL_LENGTH TYPE STRING,
USE_STRICT_DECIMAL_CHECK TYPE STRING,
NODE TYPE STRING,
VALUE_CONTROL_PROPERTY TYPE STRING,
UUID TYPE STRING,
USE_STRICT_FUNCTION_PARAM_CHK TYPE STRING,
NODE TYPE STRING,
UUID_TYPE TYPE STRING,
UUID TYPE STRING,
UUID_TYPE TYPE STRING,
VALUE_LIST TYPE STRING,
UUID TYPE STRING,
UUID_TYPE TYPE STRING,
IS_ENABLED TYPE STRING,
SEMANTIC TYPE STRING,
DOCU_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/IWFND/S_MED_MDL_RW_PROPERTY_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_/IWFND/S_MED_MDL_RW_PROPERTY_STR-NAME sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-EXTERNAL_NAME sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-DATA sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-UUID sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-DECIMALS sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-UUID_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-LENGTH sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_ENABLED sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-SEMANTIC sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-CORE_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-DOCU_ID sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-INPUT_MASK sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-NAME sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_KEY sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_OPTIONAL sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-EXTERNAL_NAME sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-DATA sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_READ_ONLY sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-DECIMALS sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_TECHNICAL sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-LENGTH sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-CONTENT_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-CORE_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-CREATABLE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-FILTERABLE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-INPUT_MASK sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_KEY sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-SORTABLE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_OPTIONAL sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-INTERNAL_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_READ_ONLY sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-INTERNAL_LENGTH sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-CONTENT_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_EXT_FIELD sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-CREATABLE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-EDM_PRECISION sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-EDM_SCALE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-FILTERABLE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-SORTABLE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-UNIT_PROPERTY sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-DEFAULT_VALUE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-INTERNAL_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-INTERNAL_LENGTH sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-USE_STRICT_DECIMAL_CHECK sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-NODE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-VALUE_CONTROL_PROPERTY sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-UUID sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-USE_STRICT_FUNCTION_PARAM_CHK sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-NODE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-UUID_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-UUID sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-UUID_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-VALUE_LIST sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-UUID sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-UUID_TYPE sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-IS_ENABLED sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-SEMANTIC sy-vline 
WA_/IWFND/S_MED_MDL_RW_PROPERTY_STR-DOCU_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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