ABAP Select data from SAP table /DSD/ME_TOUR_SCN 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_TOUR_SCN 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_TOUR_SCN. 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_TOUR_SCN 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_TOUR_SCN TYPE STANDARD TABLE OF /DSD/ME_TOUR_SCN,
      WA_/DSD/ME_TOUR_SCN TYPE /DSD/ME_TOUR_SCN,
      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_TOUR_SCN> TYPE /DSD/ME_TOUR_SCN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /DSD/ME_TOUR_SCN
*  INTO TABLE @DATA(IT_/DSD/ME_TOUR_SCN2).
*--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_TOUR_SCN INDEX 1 INTO DATA(WA_/DSD/ME_TOUR_SCN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</DSD/ME_TOUR_SCN>-MANDT = 1.
</DSD/ME_TOUR_SCN>-TOUR_SCENARIO = 1.
</DSD/ME_TOUR_SCN>-SHTYP = 1.
</DSD/ME_TOUR_SCN>-CO_MAT = 1.
</DSD/ME_TOUR_SCN>-CO_PAYMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/DSD/ME_TOUR_SCN-CI_MAT, sy-vline,
  WA_/DSD/ME_TOUR_SCN-CI_PAYMENT, sy-vline,
  WA_/DSD/ME_TOUR_SCN-SALES_ORDER, sy-vline,
  WA_/DSD/ME_TOUR_SCN-RETURN_ORDER, sy-vline,
  WA_/DSD/ME_TOUR_SCN-FREE_ORDER, sy-vline,
  WA_/DSD/ME_TOUR_SCN-DELIVERY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/DSD/ME_TOUR_SCN 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_TOUR_SCN 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_TOUR_SCN INTO WA_/DSD/ME_TOUR_SCN.


*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.
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_TOUR_SCN_STR, 
MANDT TYPE STRING,
TOUR_SCENARIO TYPE STRING,
SHTYP TYPE STRING,
CO_MAT TYPE STRING,
CO_PAYMENT TYPE STRING,
CI_MAT TYPE STRING,
CI_PAYMENT TYPE STRING,
SALES_ORDER TYPE STRING,
RETURN_ORDER TYPE STRING,
FREE_ORDER TYPE STRING,
DELIVERY TYPE STRING,
RETURN_DELV TYPE STRING,
FREE_DELV TYPE STRING,
CREDIT_CHECK TYPE STRING,
EXPENSE TYPE STRING,
HH_COLLECTION TYPE STRING,
INVENTORY_ADJ TYPE STRING,
END_ODOMETER 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,
RELOAD TYPE STRING,
BARCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/DSD/ME_TOUR_SCN_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_TOUR_SCN_STR-MANDT sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-TOUR_SCENARIO sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-SHTYP sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-CO_MAT sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-CO_PAYMENT sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-CI_MAT sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-CI_PAYMENT sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-SALES_ORDER sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-RETURN_ORDER sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-FREE_ORDER sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-DELIVERY sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-RETURN_DELV sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-FREE_DELV sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-CREDIT_CHECK sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXPENSE sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-HH_COLLECTION sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-INVENTORY_ADJ sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-END_ODOMETER sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD1 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD2 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD3 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD4 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD5 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD6 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD7 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD8 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD9 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-EXTFLD10 sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-RELOAD sy-vline 
WA_/DSD/ME_TOUR_SCN_STR-BARCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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