ABAP Select data from SAP table MPES_RTGV_BOM_LIST_ITEM_INST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MPES_RTGV_BOM_LIST_ITEM_INST 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_RTGV_BOM_LIST_ITEM_INST. 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_RTGV_BOM_LIST_ITEM_INST 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_RTGV_BOM_LIST_ITEM_INST TYPE STANDARD TABLE OF MPES_RTGV_BOM_LIST_ITEM_INST,
      WA_MPES_RTGV_BOM_LIST_ITEM_INST TYPE MPES_RTGV_BOM_LIST_ITEM_INST,
      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_RTGV_BOM_LIST_ITEM_INST> TYPE MPES_RTGV_BOM_LIST_ITEM_INST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_RTGV_BOM_LIST_ITEM_INST
*  INTO TABLE @DATA(IT_MPES_RTGV_BOM_LIST_ITEM_INST2).
*--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_RTGV_BOM_LIST_ITEM_INST INDEX 1 INTO DATA(WA_MPES_RTGV_BOM_LIST_ITEM_INST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_RTGV_BOM_LIST_ITEM_INST>-PLNTY = 1.
<MPES_RTGV_BOM_LIST_ITEM_INST>-PLNNR = 1.
<MPES_RTGV_BOM_LIST_ITEM_INST>-PLNAL = 1.
<MPES_RTGV_BOM_LIST_ITEM_INST>-VERSN = 1.
<MPES_RTGV_BOM_LIST_ITEM_INST>-AUFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_RTGV_BOM_LIST_ITEM_INST-STLAN, sy-vline,
  WA_MPES_RTGV_BOM_LIST_ITEM_INST-WERKS, sy-vline,
  WA_MPES_RTGV_BOM_LIST_ITEM_INST-MATNR, sy-vline,
  WA_MPES_RTGV_BOM_LIST_ITEM_INST-STLTY, sy-vline,
  WA_MPES_RTGV_BOM_LIST_ITEM_INST-STLNR, sy-vline,
  WA_MPES_RTGV_BOM_LIST_ITEM_INST-STLAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_RTGV_BOM_LIST_ITEM_INST 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_RTGV_BOM_LIST_ITEM_INST 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_RTGV_BOM_LIST_ITEM_INST INTO WA_MPES_RTGV_BOM_LIST_ITEM_INST.


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

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

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

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGV_BOM_LIST_ITEM_INST-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGV_BOM_LIST_ITEM_INST-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_RTGV_BOM_LIST_ITEM_INST_STR, 
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
VERSN TYPE STRING,
AUFNR TYPE STRING,
STLAN TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
BOM_VERSN TYPE STRING,
STLKN TYPE STRING,
STVKN TYPE STRING,
STLKN_REFERENCE TYPE STRING,
MAKTX TYPE STRING,
PTEXT TYPE STRING,
NOT_CHANGEABLE TYPE STRING,
STATE TYPE STRING,
PHANTOM TYPE STRING,
ASSGMT_STATUS TYPE STRING,
OAN_ELEMENT_NUMBER_EXT TYPE STRING,
VERSN_TRACK_GUID TYPE STRING,
SOURCE_OA_ID TYPE STRING,
DELTA_TYPE TYPE STRING,
IDNRK TYPE STRING,
POSTP TYPE STRING,
POSNR TYPE STRING,
MATKL TYPE STRING,
MEINS TYPE STRING,
MENGE TYPE STRING,
FMENG TYPE STRING,
AUSCH TYPE STRING,
AVOAU TYPE STRING,
NETAU TYPE STRING,
SCHGT TYPE STRING,
PSWRK TYPE STRING,
LGORT TYPE STRING,
ITSOB TYPE STRING,
PRVBE TYPE STRING,
INSMK TYPE STRING,
STVKN_VERSN TYPE STRING,
ASSEMBLY_TYPE TYPE STRING,
OAN_ELEMENT_NUMBER TYPE STRING,
HAS_BOM_ITEM_INSTANCES TYPE STRING,
DUMMY_STPO_INCL_EEW_PS TYPE STRING,
INST_COUNTER TYPE STRING,
INST_VALUE TYPE STRING,
INST_GUID TYPE STRING,
TMXGUID TYPE STRING,
TMXGUID_REFERENCE TYPE STRING,
REF_DESIGNATOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_RTGV_BOM_LIST_ITEM_INST_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_RTGV_BOM_LIST_ITEM_INST_STR-PLNTY sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-PLNNR sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-PLNAL sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-VERSN sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-AUFNR sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-STLAN sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-WERKS sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-MATNR sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-STLTY sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-STLNR sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-STLAL sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-BOM_VERSN sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-STLKN sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-STVKN sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-STLKN_REFERENCE sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-MAKTX sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-PTEXT sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-NOT_CHANGEABLE sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-STATE sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-PHANTOM sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-ASSGMT_STATUS sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-OAN_ELEMENT_NUMBER_EXT sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-VERSN_TRACK_GUID sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-SOURCE_OA_ID sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-DELTA_TYPE sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-IDNRK sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-POSTP sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-POSNR sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-MATKL sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-MEINS sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-MENGE sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-FMENG sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-AUSCH sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-AVOAU sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-NETAU sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-SCHGT sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-PSWRK sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-LGORT sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-ITSOB sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-PRVBE sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-INSMK sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-STVKN_VERSN sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-ASSEMBLY_TYPE sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-OAN_ELEMENT_NUMBER sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-HAS_BOM_ITEM_INSTANCES sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-DUMMY_STPO_INCL_EEW_PS sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-INST_COUNTER sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-INST_VALUE sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-INST_GUID sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-TMXGUID sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-TMXGUID_REFERENCE sy-vline 
WA_MPES_RTGV_BOM_LIST_ITEM_INST_STR-REF_DESIGNATOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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