ABAP Select data from SAP table IVERSNBOMITEMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IVERSNBOMITEMS
*  INTO TABLE @DATA(IT_IVERSNBOMITEMS2).
*--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_IVERSNBOMITEMS INDEX 1 INTO DATA(WA_IVERSNBOMITEMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IVERSNBOMITEMS>-MANDT = 1.
<IVERSNBOMITEMS>-BILLOFMATERIALCATEGORY = 1.
<IVERSNBOMITEMS>-BILLOFMATERIAL = 1.
<IVERSNBOMITEMS>-BILLOFMATERIALVARIANT = 1.
<IVERSNBOMITEMS>-BILLOFMATERIALITEMNODENUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IVERSNBOMITEMS-BILLOFMATERIALVERSION, sy-vline,
  WA_IVERSNBOMITEMS-BILLOFMATERIALCOMPONENT, sy-vline,
  WA_IVERSNBOMITEMS-BILLOFMATERIALITEMCATEGORY, sy-vline,
  WA_IVERSNBOMITEMS-BILLOFMATERIALITEMNUMBER, sy-vline,
  WA_IVERSNBOMITEMS-BILLOFMATERIALITEMUNIT, sy-vline,
  WA_IVERSNBOMITEMS-BILLOFMATERIALITEMQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IVERSNBOMITEMS 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_IVERSNBOMITEMS 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_IVERSNBOMITEMS INTO WA_IVERSNBOMITEMS.


*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 NUMCV, internal->external for field BILLOFMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_IVERSNBOMITEMS-BILLOFMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IVERSNBOMITEMS-BILLOFMATERIAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field BILLOFMATERIALCOMPONENT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IVERSNBOMITEMS-BILLOFMATERIALCOMPONENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IVERSNBOMITEMS-BILLOFMATERIALCOMPONENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field BILLOFMATERIALITEMNUMBER
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_IVERSNBOMITEMS-BILLOFMATERIALITEMNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IVERSNBOMITEMS-BILLOFMATERIALITEMNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BILLOFMATERIALITEMUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IVERSNBOMITEMS-BILLOFMATERIALITEMUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IVERSNBOMITEMS-BILLOFMATERIALITEMUNIT.
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_IVERSNBOMITEMS_STR, 
MANDT TYPE STRING,
BILLOFMATERIALCATEGORY TYPE STRING,
BILLOFMATERIAL TYPE STRING,
BILLOFMATERIALVARIANT TYPE STRING,
BILLOFMATERIALITEMNODENUMBER TYPE STRING,
BILLOFMATERIALVERSION TYPE STRING,
BILLOFMATERIALCOMPONENT TYPE STRING,
BILLOFMATERIALITEMCATEGORY TYPE STRING,
BILLOFMATERIALITEMNUMBER TYPE STRING,
BILLOFMATERIALITEMUNIT TYPE STRING,
BILLOFMATERIALITEMQUANTITY TYPE STRING,
BOMITEMDESCRIPTION TYPE STRING,
BOMITEMTEXT2 TYPE STRING,
FIXEDQUANTITY TYPE STRING,
BOMITEMCREATEDBYUSER TYPE STRING,
BOMITEMLASTCHANGEDATE TYPE STRING,
BOMITEMLASTCHANGEDBYUSER TYPE STRING,
BOMITEMRECORDCREATIONDATE TYPE STRING,
MATERIALISCOPRODUCT TYPE STRING,
ISBULKMATERIAL TYPE STRING,
MATERIALCOMPONENTISPHANTOMITEM TYPE STRING,
ISPHANTOMITEM TYPE STRING,
ISASSEMBLY TYPE STRING,
BILLOFMATERIALITEMCATEGORYDESC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IVERSNBOMITEMS_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_IVERSNBOMITEMS_STR-MANDT sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALCATEGORY sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIAL sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALVARIANT sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALITEMNODENUMBER sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALVERSION sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALCOMPONENT sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALITEMCATEGORY sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALITEMNUMBER sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALITEMUNIT sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALITEMQUANTITY sy-vline 
WA_IVERSNBOMITEMS_STR-BOMITEMDESCRIPTION sy-vline 
WA_IVERSNBOMITEMS_STR-BOMITEMTEXT2 sy-vline 
WA_IVERSNBOMITEMS_STR-FIXEDQUANTITY sy-vline 
WA_IVERSNBOMITEMS_STR-BOMITEMCREATEDBYUSER sy-vline 
WA_IVERSNBOMITEMS_STR-BOMITEMLASTCHANGEDATE sy-vline 
WA_IVERSNBOMITEMS_STR-BOMITEMLASTCHANGEDBYUSER sy-vline 
WA_IVERSNBOMITEMS_STR-BOMITEMRECORDCREATIONDATE sy-vline 
WA_IVERSNBOMITEMS_STR-MATERIALISCOPRODUCT sy-vline 
WA_IVERSNBOMITEMS_STR-ISBULKMATERIAL sy-vline 
WA_IVERSNBOMITEMS_STR-MATERIALCOMPONENTISPHANTOMITEM sy-vline 
WA_IVERSNBOMITEMS_STR-ISPHANTOMITEM sy-vline 
WA_IVERSNBOMITEMS_STR-ISASSEMBLY sy-vline 
WA_IVERSNBOMITEMS_STR-BILLOFMATERIALITEMCATEGORYDESC sy-vline      INTO ld_text SEPARATED BY SPACE.

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