ABAP Select data from SAP table /IWBEP/S_GWS_BASIC_PRODUCT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /IWBEP/S_GWS_BASIC_PRODUCT
*  INTO TABLE @DATA(IT_/IWBEP/S_GWS_BASIC_PRODUCT2).
*--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_/IWBEP/S_GWS_BASIC_PRODUCT INDEX 1 INTO DATA(WA_/IWBEP/S_GWS_BASIC_PRODUCT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</IWBEP/S_GWS_BASIC_PRODUCT>-PRODUCT_ID = 1.
</IWBEP/S_GWS_BASIC_PRODUCT>-TYPE_CODE = 1.
</IWBEP/S_GWS_BASIC_PRODUCT>-CATEGORY = 1.
</IWBEP/S_GWS_BASIC_PRODUCT>-NAME = 1.
</IWBEP/S_GWS_BASIC_PRODUCT>-NAME_LANGUAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/IWBEP/S_GWS_BASIC_PRODUCT-DESCRIPTION, sy-vline,
  WA_/IWBEP/S_GWS_BASIC_PRODUCT-DESCRIPTION_LANGUAGE, sy-vline,
  WA_/IWBEP/S_GWS_BASIC_PRODUCT-SUPPLIER_ID, sy-vline,
  WA_/IWBEP/S_GWS_BASIC_PRODUCT-SUPPLIER_NAME, sy-vline,
  WA_/IWBEP/S_GWS_BASIC_PRODUCT-TAX_TARIF_CODE, sy-vline,
  WA_/IWBEP/S_GWS_BASIC_PRODUCT-MEASURE_UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/IWBEP/S_GWS_BASIC_PRODUCT 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_/IWBEP/S_GWS_BASIC_PRODUCT 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_/IWBEP/S_GWS_BASIC_PRODUCT INTO WA_/IWBEP/S_GWS_BASIC_PRODUCT.


*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 NAME_LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/IWBEP/S_GWS_BASIC_PRODUCT-NAME_LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IWBEP/S_GWS_BASIC_PRODUCT-NAME_LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field DESCRIPTION_LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/IWBEP/S_GWS_BASIC_PRODUCT-DESCRIPTION_LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IWBEP/S_GWS_BASIC_PRODUCT-DESCRIPTION_LANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEASURE_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/IWBEP/S_GWS_BASIC_PRODUCT-MEASURE_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IWBEP/S_GWS_BASIC_PRODUCT-MEASURE_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WEIGHT_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/IWBEP/S_GWS_BASIC_PRODUCT-WEIGHT_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IWBEP/S_GWS_BASIC_PRODUCT-WEIGHT_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DIM_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/IWBEP/S_GWS_BASIC_PRODUCT-DIM_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IWBEP/S_GWS_BASIC_PRODUCT-DIM_UNIT.
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_/IWBEP/S_GWS_BASIC_PRODUCT_STR, 
PRODUCT_ID TYPE STRING,
TYPE_CODE TYPE STRING,
CATEGORY TYPE STRING,
NAME TYPE STRING,
NAME_LANGUAGE TYPE STRING,
DESCRIPTION TYPE STRING,
DESCRIPTION_LANGUAGE TYPE STRING,
SUPPLIER_ID TYPE STRING,
SUPPLIER_NAME TYPE STRING,
TAX_TARIF_CODE TYPE STRING,
MEASURE_UNIT TYPE STRING,
WEIGHT_MEASURE TYPE STRING,
WEIGHT_UNIT TYPE STRING,
CURRENCY_CODE TYPE STRING,
PRICE TYPE STRING,
WIDTH TYPE STRING,
DEPTH TYPE STRING,
HEIGHT TYPE STRING,
DIM_UNIT TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_AT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/IWBEP/S_GWS_BASIC_PRODUCT_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_/IWBEP/S_GWS_BASIC_PRODUCT_STR-PRODUCT_ID sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-TYPE_CODE sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-CATEGORY sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-NAME sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-NAME_LANGUAGE sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-DESCRIPTION sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-DESCRIPTION_LANGUAGE sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-SUPPLIER_ID sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-SUPPLIER_NAME sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-TAX_TARIF_CODE sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-MEASURE_UNIT sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-WEIGHT_MEASURE sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-WEIGHT_UNIT sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-CURRENCY_CODE sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-PRICE sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-WIDTH sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-DEPTH sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-HEIGHT sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-DIM_UNIT sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-CREATED_AT sy-vline 
WA_/IWBEP/S_GWS_BASIC_PRODUCT_STR-CHANGED_AT sy-vline      INTO ld_text SEPARATED BY SPACE.

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