ABAP Select data from SAP table ITORSTAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITORSTAGE
*  INTO TABLE @DATA(IT_ITORSTAGE2).
*--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_ITORSTAGE INDEX 1 INTO DATA(WA_ITORSTAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITORSTAGE>-MANDT = 1.
<ITORSTAGE>-TRANSPORTATIONORDERSTAGEUUID = 1.
<ITORSTAGE>-TRANSPORTATIONORDERUUID = 1.
<ITORSTAGE>-TRANSPORDSTAGESRCESTOPUUID = 1.
<ITORSTAGE>-TRANSPORDSTAGEDESTSTOPUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITORSTAGE-TRANSPORTATIONORDERSTAGE, sy-vline,
  WA_ITORSTAGE-TRANSPORDSTAGEDESTSTOPCATEGORY, sy-vline,
  WA_ITORSTAGE-TRANSPORDSTAGETYPE, sy-vline,
  WA_ITORSTAGE-TRANSPORDSTAGECATEGORY, sy-vline,
  WA_ITORSTAGE-TRANSPORDSTAGEPLNSTATUS, sy-vline,
  WA_ITORSTAGE-TRANSPORDSTAGEDISTANCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITORSTAGE 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_ITORSTAGE 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_ITORSTAGE INTO WA_ITORSTAGE.


*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 ALPHA, internal->external for field TRANSPORTATIONORDERSTAGE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITORSTAGE-TRANSPORTATIONORDERSTAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITORSTAGE-TRANSPORTATIONORDERSTAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CARRIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITORSTAGE-CARRIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITORSTAGE-CARRIER.
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_ITORSTAGE_STR, 
MANDT TYPE STRING,
TRANSPORTATIONORDERSTAGEUUID TYPE STRING,
TRANSPORTATIONORDERUUID TYPE STRING,
TRANSPORDSTAGESRCESTOPUUID TYPE STRING,
TRANSPORDSTAGEDESTSTOPUUID TYPE STRING,
TRANSPORTATIONORDERSTAGE TYPE STRING,
TRANSPORDSTAGEDESTSTOPCATEGORY TYPE STRING,
TRANSPORDSTAGETYPE TYPE STRING,
TRANSPORDSTAGECATEGORY TYPE STRING,
TRANSPORDSTAGEPLNSTATUS TYPE STRING,
TRANSPORDSTAGEDISTANCE TYPE STRING,
TRANSPORDSTAGENETDURATION TYPE STRING,
MEANSOFTRANSPORT TYPE STRING,
TRANSPORTATIONMODE TYPE STRING,
TRANSPORTATIONMODECATEGORY TYPE STRING,
CARRIERUUID TYPE STRING,
CARRIER TYPE STRING,
TRANSPORDSTAGESCACCODE TYPE STRING,
TRANSPORDSTAGEAIRLINEIATACODE TYPE STRING,
TRANSPORDSTAGEAIRWAYBILL TYPE STRING,
TRANSPORDSTAGEVOYAGE TYPE STRING,
TRANSPORDSTAGEFLIGHT TYPE STRING,
TRANSPORDSTAGEVESSEL TYPE STRING,
TRANSPORDSTAGEIMOSHIP TYPE STRING,
CARRIERBUSPURPOSEISCOMPLETED TYPE STRING,
TRANSPORDSTAGEMAXUTILZNRATIO TYPE STRING,
TRANSPORDSTAGEUTILZNMASSRATIO TYPE STRING,
TRANSPORDSTAGEUTILZNVOLRATIO TYPE STRING,
TRANSPORDSTAGEUTILZNLENRATIO TYPE STRING,
TRANSPORDSTAGEUTILZNQTYRATIO TYPE STRING,
REQUESTINGCOMPANYCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITORSTAGE_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_ITORSTAGE_STR-MANDT sy-vline 
WA_ITORSTAGE_STR-TRANSPORTATIONORDERSTAGEUUID sy-vline 
WA_ITORSTAGE_STR-TRANSPORTATIONORDERUUID sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGESRCESTOPUUID sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEDESTSTOPUUID sy-vline 
WA_ITORSTAGE_STR-TRANSPORTATIONORDERSTAGE sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEDESTSTOPCATEGORY sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGETYPE sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGECATEGORY sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEPLNSTATUS sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEDISTANCE sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGENETDURATION sy-vline 
WA_ITORSTAGE_STR-MEANSOFTRANSPORT sy-vline 
WA_ITORSTAGE_STR-TRANSPORTATIONMODE sy-vline 
WA_ITORSTAGE_STR-TRANSPORTATIONMODECATEGORY sy-vline 
WA_ITORSTAGE_STR-CARRIERUUID sy-vline 
WA_ITORSTAGE_STR-CARRIER sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGESCACCODE sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEAIRLINEIATACODE sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEAIRWAYBILL sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEVOYAGE sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEFLIGHT sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEVESSEL sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEIMOSHIP sy-vline 
WA_ITORSTAGE_STR-CARRIERBUSPURPOSEISCOMPLETED sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEMAXUTILZNRATIO sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEUTILZNMASSRATIO sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEUTILZNVOLRATIO sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEUTILZNLENRATIO sy-vline 
WA_ITORSTAGE_STR-TRANSPORDSTAGEUTILZNQTYRATIO sy-vline 
WA_ITORSTAGE_STR-REQUESTINGCOMPANYCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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