ABAP Select data from SAP table ICHGRECBOMITVH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICHGRECBOMITVH
*  INTO TABLE @DATA(IT_ICHGRECBOMITVH2).
*--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_ICHGRECBOMITVH INDEX 1 INTO DATA(WA_ICHGRECBOMITVH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICHGRECBOMITVH>-MANDT = 1.
<ICHGRECBOMITVH>-MATERIAL = 1.
<ICHGRECBOMITVH>-PLANT = 1.
<ICHGRECBOMITVH>-BILLOFMATERIALVARIANTUSAGE = 1.
<ICHGRECBOMITVH>-BILLOFMATERIALVARIANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICHGRECBOMITVH-BILLOFMATERIALITEMNUMBER, sy-vline,
  WA_ICHGRECBOMITVH-BILLOFMATERIALITEMUUID, sy-vline,
  WA_ICHGRECBOMITVH-BILLOFMATERIALCOMPONENT, sy-vline,
  WA_ICHGRECBOMITVH-MATERIALNAME, sy-vline,
  WA_ICHGRECBOMITVH-PLANTNAME, sy-vline,
  WA_ICHGRECBOMITVH-BILLOFMATERIALVARIANTUSAGEDESC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICHGRECBOMITVH 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_ICHGRECBOMITVH 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_ICHGRECBOMITVH INTO WA_ICHGRECBOMITVH.


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

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

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

*Conversion exit MATN1, internal->external for field BILLOFMATERIALCOMPONENT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ICHGRECBOMITVH-BILLOFMATERIALCOMPONENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICHGRECBOMITVH-BILLOFMATERIALCOMPONENT.
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_ICHGRECBOMITVH_STR, 
MANDT TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
BILLOFMATERIALVARIANTUSAGE TYPE STRING,
BILLOFMATERIALVARIANT TYPE STRING,
BILLOFMATERIALITEMNUMBER TYPE STRING,
BILLOFMATERIALITEMUUID TYPE STRING,
BILLOFMATERIALCOMPONENT TYPE STRING,
MATERIALNAME TYPE STRING,
PLANTNAME TYPE STRING,
BILLOFMATERIALVARIANTUSAGEDESC TYPE STRING,
BILLOFMATERIALCOMPONENTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICHGRECBOMITVH_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_ICHGRECBOMITVH_STR-MANDT sy-vline 
WA_ICHGRECBOMITVH_STR-MATERIAL sy-vline 
WA_ICHGRECBOMITVH_STR-PLANT sy-vline 
WA_ICHGRECBOMITVH_STR-BILLOFMATERIALVARIANTUSAGE sy-vline 
WA_ICHGRECBOMITVH_STR-BILLOFMATERIALVARIANT sy-vline 
WA_ICHGRECBOMITVH_STR-BILLOFMATERIALITEMNUMBER sy-vline 
WA_ICHGRECBOMITVH_STR-BILLOFMATERIALITEMUUID sy-vline 
WA_ICHGRECBOMITVH_STR-BILLOFMATERIALCOMPONENT sy-vline 
WA_ICHGRECBOMITVH_STR-MATERIALNAME sy-vline 
WA_ICHGRECBOMITVH_STR-PLANTNAME sy-vline 
WA_ICHGRECBOMITVH_STR-BILLOFMATERIALVARIANTUSAGEDESC sy-vline 
WA_ICHGRECBOMITVH_STR-BILLOFMATERIALCOMPONENTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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