ABAP Select data from SAP table MPES_PE_BOM_VERSN_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_PE_BOM_VERSN_ITEM
*  INTO TABLE @DATA(IT_MPES_PE_BOM_VERSN_ITEM2).
*--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_MPES_PE_BOM_VERSN_ITEM INDEX 1 INTO DATA(WA_MPES_PE_BOM_VERSN_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_PE_BOM_VERSN_ITEM>-MATNR = 1.
<MPES_PE_BOM_VERSN_ITEM>-WERKS = 1.
<MPES_PE_BOM_VERSN_ITEM>-STLAN = 1.
<MPES_PE_BOM_VERSN_ITEM>-STLNR = 1.
<MPES_PE_BOM_VERSN_ITEM>-STLAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_PE_BOM_VERSN_ITEM-BOM_VERSN, sy-vline,
  WA_MPES_PE_BOM_VERSN_ITEM-TECHS, sy-vline,
  WA_MPES_PE_BOM_VERSN_ITEM-STLKN, sy-vline,
  WA_MPES_PE_BOM_VERSN_ITEM-STPOZ, sy-vline,
  WA_MPES_PE_BOM_VERSN_ITEM-STVKN, sy-vline,
  WA_MPES_PE_BOM_VERSN_ITEM-STVKN_VERSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_PE_BOM_VERSN_ITEM 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_MPES_PE_BOM_VERSN_ITEM 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_MPES_PE_BOM_VERSN_ITEM INTO WA_MPES_PE_BOM_VERSN_ITEM.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MPES_PE_BOM_VERSN_ITEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_PE_BOM_VERSN_ITEM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_PE_BOM_VERSN_ITEM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_PE_BOM_VERSN_ITEM-MEINS.
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_MPES_PE_BOM_VERSN_ITEM_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
STLAN TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
BOM_VERSN TYPE STRING,
TECHS TYPE STRING,
STLKN TYPE STRING,
STPOZ TYPE STRING,
STVKN TYPE STRING,
STVKN_VERSN TYPE STRING,
AENNR TYPE STRING,
IDNRK TYPE STRING,
POSTP TYPE STRING,
POSNR TYPE STRING,
MEINS TYPE STRING,
MENGE TYPE STRING,
RFPNT TYPE STRING,
CATYP TYPE STRING,
EFFTYP TYPE STRING,
SEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_PE_BOM_VERSN_ITEM_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_MPES_PE_BOM_VERSN_ITEM_STR-MATNR sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-WERKS sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-STLAN sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-STLNR sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-STLAL sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-BOM_VERSN sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-TECHS sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-STLKN sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-STPOZ sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-STVKN sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-STVKN_VERSN sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-AENNR sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-IDNRK sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-POSTP sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-POSNR sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-MEINS sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-MENGE sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-RFPNT sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-CATYP sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-EFFTYP sy-vline 
WA_MPES_PE_BOM_VERSN_ITEM_STR-SEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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