ABAP Select data from SAP table CPRDBOMITEM into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CPRDBOMITEM 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 CPRDBOMITEM. 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 CPRDBOMITEM 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_CPRDBOMITEM TYPE STANDARD TABLE OF CPRDBOMITEM,
      WA_CPRDBOMITEM TYPE CPRDBOMITEM,
      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: <CPRDBOMITEM> TYPE CPRDBOMITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPRDBOMITEM
*  INTO TABLE @DATA(IT_CPRDBOMITEM2).
*--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_CPRDBOMITEM INDEX 1 INTO DATA(WA_CPRDBOMITEM2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPRDBOMITEM-PRODUCT, sy-vline,
  WA_CPRDBOMITEM-PLANT, sy-vline,
  WA_CPRDBOMITEM-BILLOFMATERIALITEMNODENUMBER, sy-vline,
  WA_CPRDBOMITEM-HEADERCHANGEDOCUMENT, sy-vline,
  WA_CPRDBOMITEM-BOMITEMINTERNALCHANGECOUNT, sy-vline,
  WA_CPRDBOMITEM-BILLOFMATERIALITEMUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPRDBOMITEM 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_CPRDBOMITEM 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_CPRDBOMITEM INTO WA_CPRDBOMITEM.


*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_CPRDBOMITEM-BILLOFMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPRDBOMITEM-BILLOFMATERIAL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field BILLOFMATERIALITEMUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPRDBOMITEM-BILLOFMATERIALITEMUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPRDBOMITEM-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_CPRDBOMITEM_STR, 
MANDT TYPE STRING,
BILLOFMATERIAL TYPE STRING,
BILLOFMATERIALCATEGORY TYPE STRING,
BILLOFMATERIALVARIANT TYPE STRING,
BILLOFMATERIALVERSION TYPE STRING,
PRODUCT TYPE STRING,
PLANT TYPE STRING,
BILLOFMATERIALITEMNODENUMBER TYPE STRING,
HEADERCHANGEDOCUMENT TYPE STRING,
BOMITEMINTERNALCHANGECOUNT TYPE STRING,
BILLOFMATERIALITEMUUID TYPE STRING,
BILLOFMATERIALCOMPONENT TYPE STRING,
COMPONENTDESCRIPTION TYPE STRING,
BILLOFMATERIALITEMUNIT TYPE STRING,
BILLOFMATERIALITEMQUANTITY TYPE STRING,
BILLOFMATERIALITEMCATEGORY TYPE STRING,
ARTICLECATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPRDBOMITEM_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_CPRDBOMITEM_STR-MANDT sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIAL sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIALCATEGORY sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIALVARIANT sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIALVERSION sy-vline 
WA_CPRDBOMITEM_STR-PRODUCT sy-vline 
WA_CPRDBOMITEM_STR-PLANT sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIALITEMNODENUMBER sy-vline 
WA_CPRDBOMITEM_STR-HEADERCHANGEDOCUMENT sy-vline 
WA_CPRDBOMITEM_STR-BOMITEMINTERNALCHANGECOUNT sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIALITEMUUID sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIALCOMPONENT sy-vline 
WA_CPRDBOMITEM_STR-COMPONENTDESCRIPTION sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIALITEMUNIT sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIALITEMQUANTITY sy-vline 
WA_CPRDBOMITEM_STR-BILLOFMATERIALITEMCATEGORY sy-vline 
WA_CPRDBOMITEM_STR-ARTICLECATEGORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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