ABAP Select data from SAP table ESH_U_MBOMHEADER into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_U_MBOMHEADER
*  INTO TABLE @DATA(IT_ESH_U_MBOMHEADER2).
*--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_ESH_U_MBOMHEADER INDEX 1 INTO DATA(WA_ESH_U_MBOMHEADER2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_U_MBOMHEADER-BILLOFMATERIALVARIANTUSAGE, sy-vline,
  WA_ESH_U_MBOMHEADER-BILLOFMATERIALVARIANTUSAGEDESC, sy-vline,
  WA_ESH_U_MBOMHEADER-BILLOFMATERIALVERSION, sy-vline,
  WA_ESH_U_MBOMHEADER-BOMITEMDESCRIPTION, sy-vline,
  WA_ESH_U_MBOMHEADER-BOMITEMTEXT2, sy-vline,
  WA_ESH_U_MBOMHEADER-BOM_ITEM_DESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_U_MBOMHEADER 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_ESH_U_MBOMHEADER 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_ESH_U_MBOMHEADER INTO WA_ESH_U_MBOMHEADER.


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

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

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

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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_MBOMHEADER-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_MBOMHEADER-MATERIAL.
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_ESH_U_MBOMHEADER_STR, 
MANDT TYPE STRING,
BILLOFMATERIAL TYPE STRING,
BILLOFMATERIALCATEGORY TYPE STRING,
BILLOFMATERIALCOMPONENT TYPE STRING,
BILLOFMATERIALVARIANT TYPE STRING,
BILLOFMATERIALVARIANTUSAGE TYPE STRING,
BILLOFMATERIALVARIANTUSAGEDESC TYPE STRING,
BILLOFMATERIALVERSION TYPE STRING,
BOMITEMDESCRIPTION TYPE STRING,
BOMITEMTEXT2 TYPE STRING,
BOM_ITEM_DESCRIPTION TYPE STRING,
CREATEDBYUSER TYPE STRING,
ENGINEERINGCHANGEDOCUMENT TYPE STRING,
BOM_ITEM_CHANGE_NUMBER TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_U_MBOMHEADER_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_ESH_U_MBOMHEADER_STR-MANDT sy-vline 
WA_ESH_U_MBOMHEADER_STR-BILLOFMATERIAL sy-vline 
WA_ESH_U_MBOMHEADER_STR-BILLOFMATERIALCATEGORY sy-vline 
WA_ESH_U_MBOMHEADER_STR-BILLOFMATERIALCOMPONENT sy-vline 
WA_ESH_U_MBOMHEADER_STR-BILLOFMATERIALVARIANT sy-vline 
WA_ESH_U_MBOMHEADER_STR-BILLOFMATERIALVARIANTUSAGE sy-vline 
WA_ESH_U_MBOMHEADER_STR-BILLOFMATERIALVARIANTUSAGEDESC sy-vline 
WA_ESH_U_MBOMHEADER_STR-BILLOFMATERIALVERSION sy-vline 
WA_ESH_U_MBOMHEADER_STR-BOMITEMDESCRIPTION sy-vline 
WA_ESH_U_MBOMHEADER_STR-BOMITEMTEXT2 sy-vline 
WA_ESH_U_MBOMHEADER_STR-BOM_ITEM_DESCRIPTION sy-vline 
WA_ESH_U_MBOMHEADER_STR-CREATEDBYUSER sy-vline 
WA_ESH_U_MBOMHEADER_STR-ENGINEERINGCHANGEDOCUMENT sy-vline 
WA_ESH_U_MBOMHEADER_STR-BOM_ITEM_CHANGE_NUMBER sy-vline 
WA_ESH_U_MBOMHEADER_STR-LASTCHANGEDBYUSER sy-vline 
WA_ESH_U_MBOMHEADER_STR-MATERIAL sy-vline 
WA_ESH_U_MBOMHEADER_STR-MATERIALNAME sy-vline 
WA_ESH_U_MBOMHEADER_STR-PLANT sy-vline 
WA_ESH_U_MBOMHEADER_STR-PLANTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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