ABAP Select data from SAP table WSTP_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSTP_ITEM
*  INTO TABLE @DATA(IT_WSTP_ITEM2).
*--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_WSTP_ITEM INDEX 1 INTO DATA(WA_WSTP_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSTP_ITEM>-MATNR = 1.
<WSTP_ITEM>-MAKTX = 1.
<WSTP_ITEM>-PMATA = 1.
<WSTP_ITEM>-SATNR = 1.
<WSTP_ITEM>-MENGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSTP_ITEM-MEINH, sy-vline,
  WA_WSTP_ITEM-DATAB, sy-vline,
  WA_WSTP_ITEM-DATBI, sy-vline,
  WA_WSTP_ITEM-KSCHL, sy-vline,
  WA_WSTP_ITEM-KBETR, sy-vline,
  WA_WSTP_ITEM-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSTP_ITEM 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_WSTP_ITEM 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_WSTP_ITEM INTO WA_WSTP_ITEM.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTP_ITEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTP_ITEM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PMATA
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTP_ITEM-PMATA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTP_ITEM-PMATA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WSTP_ITEM-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTP_ITEM-SATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_WSTP_ITEM-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTP_ITEM-EAN11.
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_WSTP_ITEM_STR, 
MATNR TYPE STRING,
MAKTX TYPE STRING,
PMATA TYPE STRING,
SATNR TYPE STRING,
MENGE TYPE STRING,
MEINH TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
KSCHL TYPE STRING,
KBETR TYPE STRING,
WAERS TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
EAN11 TYPE STRING,
VBETR_EWU TYPE STRING,
VWAER_EWU TYPE STRING,
OWNPRICE TYPE STRING,
MATNR_HYPERLINK TYPE STRING,
XAKTION TYPE STRING,
X_ALL_EAN TYPE STRING,
CHANGE_DATE TYPE STRING,
X_CHANGE_TYPE TYPE STRING,
PFAND TYPE STRING,
PREIS_MIT_PFAND TYPE STRING,
PFAND_EWU TYPE STRING,
PREIS_MIT_PFAND_EWU TYPE STRING,
XCHANGE TYPE STRING,
DATAB_CHAR TYPE STRING,
DATBI_CHAR TYPE STRING,
KBETR_CHAR TYPE STRING,
KBETR_NEW TYPE STRING,
SALES_CURRENCY TYPE STRING,
XSTATUS TYPE STRING,
WAERS_PFAND TYPE STRING,
PROMO_START_DATE TYPE STRING,
XPRICE_OF_DAY TYPE STRING,
LOEVM TYPE STRING,
XDAYPRICE_ALLOWED TYPE STRING,
KBETR1 TYPE STRING,
WAERS1 TYPE STRING,
PROMO_END_DATE TYPE STRING,
HINT TYPE STRING,
XDEPOSIT_OF_DAY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSTP_ITEM_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_WSTP_ITEM_STR-MATNR sy-vline 
WA_WSTP_ITEM_STR-MAKTX sy-vline 
WA_WSTP_ITEM_STR-PMATA sy-vline 
WA_WSTP_ITEM_STR-SATNR sy-vline 
WA_WSTP_ITEM_STR-MENGE sy-vline 
WA_WSTP_ITEM_STR-MEINH sy-vline 
WA_WSTP_ITEM_STR-DATAB sy-vline 
WA_WSTP_ITEM_STR-DATBI sy-vline 
WA_WSTP_ITEM_STR-KSCHL sy-vline 
WA_WSTP_ITEM_STR-KBETR sy-vline 
WA_WSTP_ITEM_STR-WAERS sy-vline 
WA_WSTP_ITEM_STR-KPEIN sy-vline 
WA_WSTP_ITEM_STR-KMEIN sy-vline 
WA_WSTP_ITEM_STR-EAN11 sy-vline 
WA_WSTP_ITEM_STR-VBETR_EWU sy-vline 
WA_WSTP_ITEM_STR-VWAER_EWU sy-vline 
WA_WSTP_ITEM_STR-OWNPRICE sy-vline 
WA_WSTP_ITEM_STR-MATNR_HYPERLINK sy-vline 
WA_WSTP_ITEM_STR-XAKTION sy-vline 
WA_WSTP_ITEM_STR-X_ALL_EAN sy-vline 
WA_WSTP_ITEM_STR-CHANGE_DATE sy-vline 
WA_WSTP_ITEM_STR-X_CHANGE_TYPE sy-vline 
WA_WSTP_ITEM_STR-PFAND sy-vline 
WA_WSTP_ITEM_STR-PREIS_MIT_PFAND sy-vline 
WA_WSTP_ITEM_STR-PFAND_EWU sy-vline 
WA_WSTP_ITEM_STR-PREIS_MIT_PFAND_EWU sy-vline 
WA_WSTP_ITEM_STR-XCHANGE sy-vline 
WA_WSTP_ITEM_STR-DATAB_CHAR sy-vline 
WA_WSTP_ITEM_STR-DATBI_CHAR sy-vline 
WA_WSTP_ITEM_STR-KBETR_CHAR sy-vline 
WA_WSTP_ITEM_STR-KBETR_NEW sy-vline 
WA_WSTP_ITEM_STR-SALES_CURRENCY sy-vline 
WA_WSTP_ITEM_STR-XSTATUS sy-vline 
WA_WSTP_ITEM_STR-WAERS_PFAND sy-vline 
WA_WSTP_ITEM_STR-PROMO_START_DATE sy-vline 
WA_WSTP_ITEM_STR-XPRICE_OF_DAY sy-vline 
WA_WSTP_ITEM_STR-LOEVM sy-vline 
WA_WSTP_ITEM_STR-XDAYPRICE_ALLOWED sy-vline 
WA_WSTP_ITEM_STR-KBETR1 sy-vline 
WA_WSTP_ITEM_STR-WAERS1 sy-vline 
WA_WSTP_ITEM_STR-PROMO_END_DATE sy-vline 
WA_WSTP_ITEM_STR-HINT sy-vline 
WA_WSTP_ITEM_STR-XDEPOSIT_OF_DAY sy-vline      INTO ld_text SEPARATED BY SPACE.

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