ABAP Select data from SAP table INOMHDRFLD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INOMHDRFLD
*  INTO TABLE @DATA(IT_INOMHDRFLD2).
*--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_INOMHDRFLD INDEX 1 INTO DATA(WA_INOMHDRFLD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INOMHDRFLD>-MANDT = 1.
<INOMHDRFLD>-NOMINATIONDOC = 1.
<INOMHDRFLD>-NOMINATIONTYPE = 1.
<INOMHDRFLD>-NOMINATIONEXTNUMBER = 1.
<INOMHDRFLD>-NOMINATIONHEADERSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INOMHDRFLD-TRANSPORTSYSTEM, sy-vline,
  WA_INOMHDRFLD-NOMINATIONPIPELINECYCLEID, sy-vline,
  WA_INOMHDRFLD-VEHICLEID, sy-vline,
  WA_INOMHDRFLD-NOMINATIONCARRIER, sy-vline,
  WA_INOMHDRFLD-NOMINATIONSHIPPER, sy-vline,
  WA_INOMHDRFLD-NOMINATIONUNITOFMEASURE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INOMHDRFLD 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_INOMHDRFLD 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_INOMHDRFLD INTO WA_INOMHDRFLD.


*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 NOMINATIONDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_INOMHDRFLD-NOMINATIONDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_INOMHDRFLD-NOMINATIONDOC.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field NOMINATIONHEADERUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_INOMHDRFLD-NOMINATIONHEADERUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_INOMHDRFLD-NOMINATIONHEADERUOM.
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_INOMHDRFLD_STR, 
MANDT TYPE STRING,
NOMINATIONDOC TYPE STRING,
NOMINATIONTYPE TYPE STRING,
NOMINATIONEXTNUMBER TYPE STRING,
NOMINATIONHEADERSTATUS TYPE STRING,
TRANSPORTSYSTEM TYPE STRING,
NOMINATIONPIPELINECYCLEID TYPE STRING,
VEHICLEID TYPE STRING,
NOMINATIONCARRIER TYPE STRING,
NOMINATIONSHIPPER TYPE STRING,
NOMINATIONUNITOFMEASURE TYPE STRING,
BULKSHIPMENTTYPE TYPE STRING,
TRANSPORTATIONPLANNINGPOINT TYPE STRING,
INTRANSITPLANT TYPE STRING,
INTRANSITSTORAGELOCATION TYPE STRING,
NOMINATIONMODEOFTRANSPORT TYPE STRING,
VEHICLEIDENTIFIER TYPE STRING,
NOMINATIONCREATEDBYUSER TYPE STRING,
NOMINATIONCREATIONDATE TYPE STRING,
NOMINATIONCHANGEDDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
BUSINESSTYPE TYPE STRING,
NOMINATIONDOCISBLOCKED TYPE STRING,
SHIPPINGROUTE TYPE STRING,
ISBOOKEDTRANSPORTSYSTEM TYPE STRING,
NOMINATIONEVENTDEFAULTGROUP TYPE STRING,
NOMINATIONHEADERUOM TYPE STRING,
NOMINATIONLASTHEADERACTIONDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INOMHDRFLD_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_INOMHDRFLD_STR-MANDT sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONDOC sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONTYPE sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONEXTNUMBER sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONHEADERSTATUS sy-vline 
WA_INOMHDRFLD_STR-TRANSPORTSYSTEM sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONPIPELINECYCLEID sy-vline 
WA_INOMHDRFLD_STR-VEHICLEID sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONCARRIER sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONSHIPPER sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONUNITOFMEASURE sy-vline 
WA_INOMHDRFLD_STR-BULKSHIPMENTTYPE sy-vline 
WA_INOMHDRFLD_STR-TRANSPORTATIONPLANNINGPOINT sy-vline 
WA_INOMHDRFLD_STR-INTRANSITPLANT sy-vline 
WA_INOMHDRFLD_STR-INTRANSITSTORAGELOCATION sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONMODEOFTRANSPORT sy-vline 
WA_INOMHDRFLD_STR-VEHICLEIDENTIFIER sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONCREATEDBYUSER sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONCREATIONDATE sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONCHANGEDDATE sy-vline 
WA_INOMHDRFLD_STR-LASTCHANGEDBYUSER sy-vline 
WA_INOMHDRFLD_STR-BUSINESSTYPE sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONDOCISBLOCKED sy-vline 
WA_INOMHDRFLD_STR-SHIPPINGROUTE sy-vline 
WA_INOMHDRFLD_STR-ISBOOKEDTRANSPORTSYSTEM sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONEVENTDEFAULTGROUP sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONHEADERUOM sy-vline 
WA_INOMHDRFLD_STR-NOMINATIONLASTHEADERACTIONDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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