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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /DSD/ME_TOUR_HEADER
*  INTO TABLE @DATA(IT_/DSD/ME_TOUR_HEADER2).
*--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_HEADER INDEX 1 INTO DATA(WA_/DSD/ME_TOUR_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</DSD/ME_TOUR_HEADER>-CLIENT = 1.
</DSD/ME_TOUR_HEADER>-TOUR_ID = 1.
</DSD/ME_TOUR_HEADER>-SHIP_TYPE = 1.
</DSD/ME_TOUR_HEADER>-DOC_TYPE = 1.
</DSD/ME_TOUR_HEADER>-DRIVER_ID1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/DSD/ME_TOUR_HEADER-DRIVER_ID2, sy-vline,
  WA_/DSD/ME_TOUR_HEADER-CARRIER, sy-vline,
  WA_/DSD/ME_TOUR_HEADER-VEHICLE_ID, sy-vline,
  WA_/DSD/ME_TOUR_HEADER-TRAILER_ID, sy-vline,
  WA_/DSD/ME_TOUR_HEADER-ROUTE, sy-vline,
  WA_/DSD/ME_TOUR_HEADER-ROUTE_DESC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/DSD/ME_TOUR_HEADER 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_HEADER 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_HEADER INTO WA_/DSD/ME_TOUR_HEADER.


*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 EAN11, internal->external for field SUPPLIER_GLN
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/ME_TOUR_HEADER-SUPPLIER_GLN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/ME_TOUR_HEADER-SUPPLIER_GLN.
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_TOUR_HEADER_STR, 
CLIENT TYPE STRING,
TOUR_ID TYPE STRING,
SHIP_TYPE TYPE STRING,
DOC_TYPE TYPE STRING,
DRIVER_ID1 TYPE STRING,
DRIVER_ID2 TYPE STRING,
CARRIER TYPE STRING,
VEHICLE_ID TYPE STRING,
TRAILER_ID TYPE STRING,
ROUTE TYPE STRING,
ROUTE_DESC TYPE STRING,
DISTANCE TYPE STRING,
BEG_MILE TYPE STRING,
END_MILE TYPE STRING,
PSTART_DATE TYPE STRING,
PSTART_TIME TYPE STRING,
PEND_DATE TYPE STRING,
PEND_TIME TYPE STRING,
ASTART_DATE TYPE STRING,
ASTART_TIME TYPE STRING,
AEND_DATE TYPE STRING,
AEND_TIME TYPE STRING,
TOUR_STAT TYPE STRING,
EXTFLD1 TYPE STRING,
EXTFLD2 TYPE STRING,
EXTFLD3 TYPE STRING,
EXTFLD4 TYPE STRING,
EXTFLD5 TYPE STRING,
EXTFLD6 TYPE STRING,
ME_ACTION TYPE STRING,
DRIVER_NAME1 TYPE STRING,
EXTI1 TYPE STRING,
TXJCD_SF TYPE STRING,
RELOAD_STATUS TYPE STRING,
SUPPLIER_GLN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/DSD/ME_TOUR_HEADER_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_HEADER_STR-CLIENT sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-TOUR_ID sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-SHIP_TYPE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-DOC_TYPE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-DRIVER_ID1 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-DRIVER_ID2 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-CARRIER sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-VEHICLE_ID sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-TRAILER_ID sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-ROUTE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-ROUTE_DESC sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-DISTANCE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-BEG_MILE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-END_MILE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-PSTART_DATE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-PSTART_TIME sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-PEND_DATE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-PEND_TIME sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-ASTART_DATE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-ASTART_TIME sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-AEND_DATE sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-AEND_TIME sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-TOUR_STAT sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-EXTFLD1 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-EXTFLD2 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-EXTFLD3 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-EXTFLD4 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-EXTFLD5 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-EXTFLD6 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-ME_ACTION sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-DRIVER_NAME1 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-EXTI1 sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-TXJCD_SF sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-RELOAD_STATUS sy-vline 
WA_/DSD/ME_TOUR_HEADER_STR-SUPPLIER_GLN sy-vline      INTO ld_text SEPARATED BY SPACE.

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