ABAP Select data from SAP table /SCA/ASN_DISPL_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCA/ASN_DISPL_ITEM
*  INTO TABLE @DATA(IT_/SCA/ASN_DISPL_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_/SCA/ASN_DISPL_ITEM INDEX 1 INTO DATA(WA_/SCA/ASN_DISPL_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCA/ASN_DISPL_ITEM>-ITEMID = 1.
</SCA/ASN_DISPL_ITEM>-MATNR = 1.
</SCA/ASN_DISPL_ITEM>-PRODUCTIDDESC = 1.
</SCA/ASN_DISPL_ITEM>-PRTMATNR = 1.
</SCA/ASN_DISPL_ITEM>-PRTMAKTX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCA/ASN_DISPL_ITEM-MANUFACT_DATE, sy-vline,
  WA_/SCA/ASN_DISPL_ITEM-COUNTRY_ORIGIN, sy-vline,
  WA_/SCA/ASN_DISPL_ITEM-BESTBEFORE_DATE, sy-vline,
  WA_/SCA/ASN_DISPL_ITEM-PRODUCTCHANGENO, sy-vline,
  WA_/SCA/ASN_DISPL_ITEM-BATCH_ID, sy-vline,
  WA_/SCA/ASN_DISPL_ITEM-DG_CLASS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCA/ASN_DISPL_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_/SCA/ASN_DISPL_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_/SCA/ASN_DISPL_ITEM INTO WA_/SCA/ASN_DISPL_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 CUNIT, internal->external for field QUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCA/ASN_DISPL_ITEM-QUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCA/ASN_DISPL_ITEM-QUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit DLVCV, internal->external for field INT_ASNID
CALL FUNCTION 'CONVERSION_EXIT_DLVCV_OUTPUT'
  EXPORTING
    input =                      WA_/SCA/ASN_DISPL_ITEM-INT_ASNID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCA/ASN_DISPL_ITEM-INT_ASNID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ASNCUMUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCA/ASN_DISPL_ITEM-ASNCUMUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCA/ASN_DISPL_ITEM-ASNCUMUNIT.
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_/SCA/ASN_DISPL_ITEM_STR, 
ITEMID TYPE STRING,
MATNR TYPE STRING,
PRODUCTIDDESC TYPE STRING,
PRTMATNR TYPE STRING,
PRTMAKTX TYPE STRING,
MANUFACT_DATE TYPE STRING,
COUNTRY_ORIGIN TYPE STRING,
BESTBEFORE_DATE TYPE STRING,
PRODUCTCHANGENO TYPE STRING,
BATCH_ID TYPE STRING,
DG_CLASS TYPE STRING,
DG_SUBCLASS TYPE STRING,
QUANTITY TYPE STRING,
QUANTITYUNIT TYPE STRING,
RCVDQUAN TYPE STRING,
RCVDQUAN_UNIT TYPE STRING,
RECEIVEDTST TYPE STRING,
DELVRYSTATUS TYPE STRING,
ITEMVALIDSTATUS TYPE STRING,
POREF TYPE STRING,
POREFITEM TYPE STRING,
SOORDNO TYPE STRING,
SOITMNO TYPE STRING,
PACKLIST TYPE STRING,
ITEMGROSSWEIGHT TYPE STRING,
ITEMNETWEIGHT TYPE STRING,
WEIGHTUNIT TYPE STRING,
ITEMVOLUME TYPE STRING,
VOLUMEUNIT TYPE STRING,
INT_ASNID TYPE STRING,
INT_ITMGUID TYPE STRING,
ASNCUMSUPL TYPE STRING,
ASNCUMCUST TYPE STRING,
ASNCUMUNIT TYPE STRING,
EXECSTATUS TYPE STRING,
EXECSTARTDATE TYPE STRING,
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,
TEXT4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCA/ASN_DISPL_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_/SCA/ASN_DISPL_ITEM_STR-ITEMID sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-MATNR sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-PRODUCTIDDESC sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-PRTMATNR sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-PRTMAKTX sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-MANUFACT_DATE sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-COUNTRY_ORIGIN sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-BESTBEFORE_DATE sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-PRODUCTCHANGENO sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-BATCH_ID sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-DG_CLASS sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-DG_SUBCLASS sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-QUANTITY sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-QUANTITYUNIT sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-RCVDQUAN sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-RCVDQUAN_UNIT sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-RECEIVEDTST sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-DELVRYSTATUS sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-ITEMVALIDSTATUS sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-POREF sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-POREFITEM sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-SOORDNO sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-SOITMNO sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-PACKLIST sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-ITEMGROSSWEIGHT sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-ITEMNETWEIGHT sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-WEIGHTUNIT sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-ITEMVOLUME sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-VOLUMEUNIT sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-INT_ASNID sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-INT_ITMGUID sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-ASNCUMSUPL sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-ASNCUMCUST sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-ASNCUMUNIT sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-EXECSTATUS sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-EXECSTARTDATE sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-TEXT1 sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-TEXT2 sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-TEXT3 sy-vline 
WA_/SCA/ASN_DISPL_ITEM_STR-TEXT4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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