ABAP Select data from SAP table /DSD/ME_CUSTOMER_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /DSD/ME_CUSTOMER_ITEM
*  INTO TABLE @DATA(IT_/DSD/ME_CUSTOMER_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_/DSD/ME_CUSTOMER_ITEM INDEX 1 INTO DATA(WA_/DSD/ME_CUSTOMER_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</DSD/ME_CUSTOMER_ITEM>-KUNNR = 1.
</DSD/ME_CUSTOMER_ITEM>-PARVW = 1.
</DSD/ME_CUSTOMER_ITEM>-PARNR = 1.
</DSD/ME_CUSTOMER_ITEM>-TITLE = 1.
</DSD/ME_CUSTOMER_ITEM>-FIRSTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/DSD/ME_CUSTOMER_ITEM-LASTNAME, sy-vline,
  WA_/DSD/ME_CUSTOMER_ITEM-PO_BOX, sy-vline,
  WA_/DSD/ME_CUSTOMER_ITEM-HOUSE_NO, sy-vline,
  WA_/DSD/ME_CUSTOMER_ITEM-STR_SUPPL1, sy-vline,
  WA_/DSD/ME_CUSTOMER_ITEM-STR_SUPPL2, sy-vline,
  WA_/DSD/ME_CUSTOMER_ITEM-STR_SUPPL3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/DSD/ME_CUSTOMER_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_/DSD/ME_CUSTOMER_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_/DSD/ME_CUSTOMER_ITEM INTO WA_/DSD/ME_CUSTOMER_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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/ME_CUSTOMER_ITEM-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/ME_CUSTOMER_ITEM-LANGU.
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_/DSD/ME_CUSTOMER_ITEM_STR, 
KUNNR TYPE STRING,
PARVW TYPE STRING,
PARNR TYPE STRING,
TITLE TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
PO_BOX TYPE STRING,
HOUSE_NO TYPE STRING,
STR_SUPPL1 TYPE STRING,
STR_SUPPL2 TYPE STRING,
STR_SUPPL3 TYPE STRING,
LOCATION TYPE STRING,
BUILDING TYPE STRING,
FLOOR TYPE STRING,
ROOMNUMBER TYPE STRING,
STREET TYPE STRING,
CITY TYPE STRING,
DISTRICT TYPE STRING,
REGION TYPE STRING,
COUNTRY TYPE STRING,
LANGU TYPE STRING,
TEL_NUMBER TYPE STRING,
TEL_EXTENS TYPE STRING,
FAX_NUMBER TYPE STRING,
FAX_EXTENS TYPE STRING,
EXTFLD1 TYPE STRING,
EXTFLD2 TYPE STRING,
EXTFLD3 TYPE STRING,
EXTFLD4 TYPE STRING,
EXTFLD5 TYPE STRING,
EXTFLD6 TYPE STRING,
EXTFLD7 TYPE STRING,
EXTFLD8 TYPE STRING,
EXTFLD9 TYPE STRING,
EXTFLD10 TYPE STRING,
UNL_POINT TYPE STRING,
TIMFR1 TYPE STRING,
TIMTO1 TYPE STRING,
TIMFR2 TYPE STRING,
TIMTO2 TYPE STRING,
CUST_NO_SA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/DSD/ME_CUSTOMER_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_/DSD/ME_CUSTOMER_ITEM_STR-KUNNR sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-PARVW sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-PARNR sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-TITLE sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-FIRSTNAME sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-LASTNAME sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-PO_BOX sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-HOUSE_NO sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-STR_SUPPL1 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-STR_SUPPL2 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-STR_SUPPL3 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-LOCATION sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-BUILDING sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-FLOOR sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-ROOMNUMBER sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-STREET sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-CITY sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-DISTRICT sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-REGION sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-COUNTRY sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-LANGU sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-TEL_NUMBER sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-TEL_EXTENS sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-FAX_NUMBER sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-FAX_EXTENS sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD1 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD2 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD3 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD4 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD5 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD6 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD7 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD8 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD9 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-EXTFLD10 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-UNL_POINT sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-TIMFR1 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-TIMTO1 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-TIMFR2 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-TIMTO2 sy-vline 
WA_/DSD/ME_CUSTOMER_ITEM_STR-CUST_NO_SA sy-vline      INTO ld_text SEPARATED BY SPACE.

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