ABAP Select data from SAP table VCH_MBOM_ITEM_FIELDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VCH_MBOM_ITEM_FIELDS
*  INTO TABLE @DATA(IT_VCH_MBOM_ITEM_FIELDS2).
*--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_VCH_MBOM_ITEM_FIELDS INDEX 1 INTO DATA(WA_VCH_MBOM_ITEM_FIELDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VCH_MBOM_ITEM_FIELDS>-KNOBJ = 1.
<VCH_MBOM_ITEM_FIELDS>-DATUV = 1.
<VCH_MBOM_ITEM_FIELDS>-TECHV = 1.
<VCH_MBOM_ITEM_FIELDS>-AENNR = 1.
<VCH_MBOM_ITEM_FIELDS>-ANDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VCH_MBOM_ITEM_FIELDS-ANNAM, sy-vline,
  WA_VCH_MBOM_ITEM_FIELDS-AEDAT, sy-vline,
  WA_VCH_MBOM_ITEM_FIELDS-AENAM, sy-vline,
  WA_VCH_MBOM_ITEM_FIELDS-PSWRK, sy-vline,
  WA_VCH_MBOM_ITEM_FIELDS-POSNR, sy-vline,
  WA_VCH_MBOM_ITEM_FIELDS-SORTF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VCH_MBOM_ITEM_FIELDS 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_VCH_MBOM_ITEM_FIELDS 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_VCH_MBOM_ITEM_FIELDS INTO WA_VCH_MBOM_ITEM_FIELDS.


*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 AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VCH_MBOM_ITEM_FIELDS-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VCH_MBOM_ITEM_FIELDS-AENNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VCH_MBOM_ITEM_FIELDS-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VCH_MBOM_ITEM_FIELDS-MEINS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field ROMEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VCH_MBOM_ITEM_FIELDS-ROMEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VCH_MBOM_ITEM_FIELDS-ROMEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LTXSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_VCH_MBOM_ITEM_FIELDS-LTXSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VCH_MBOM_ITEM_FIELDS-LTXSP.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field NLFMV
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VCH_MBOM_ITEM_FIELDS-NLFMV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VCH_MBOM_ITEM_FIELDS-NLFMV.
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_VCH_MBOM_ITEM_FIELDS_STR, 
KNOBJ TYPE STRING,
DATUV TYPE STRING,
TECHV TYPE STRING,
AENNR TYPE STRING,
ANDAT TYPE STRING,
ANNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
PSWRK TYPE STRING,
POSNR TYPE STRING,
SORTF TYPE STRING,
MEINS TYPE STRING,
FMENG TYPE STRING,
AUSCH TYPE STRING,
AVOAU TYPE STRING,
NETAU TYPE STRING,
SCHGT TYPE STRING,
BEIKZ TYPE STRING,
ERSKZ TYPE STRING,
RVREL TYPE STRING,
SANFE TYPE STRING,
SANIN TYPE STRING,
SANKA TYPE STRING,
SANKO TYPE STRING,
SANVS TYPE STRING,
STKKZ TYPE STRING,
REKRI TYPE STRING,
REKRS TYPE STRING,
CADPO TYPE STRING,
NLFZT TYPE STRING,
VERTI TYPE STRING,
ALPOS TYPE STRING,
EWAHR TYPE STRING,
EKGRP TYPE STRING,
LIFZT TYPE STRING,
LIFNR TYPE STRING,
PREIS TYPE STRING,
PEINH TYPE STRING,
WAERS TYPE STRING,
SAKTO TYPE STRING,
ROANZ TYPE STRING,
ROMS1 TYPE STRING,
ROMS2 TYPE STRING,
ROMS3 TYPE STRING,
ROMEI TYPE STRING,
ROMEN TYPE STRING,
RFORM TYPE STRING,
UPSKZ TYPE STRING,
LTXSP TYPE STRING,
POTX1 TYPE STRING,
POTX2 TYPE STRING,
OBJTY TYPE STRING,
MATKL TYPE STRING,
WEBAZ TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
CSSTR TYPE STRING,
EKORG TYPE STRING,
LGORT TYPE STRING,
KZKUP TYPE STRING,
INTRM TYPE STRING,
STVKN TYPE STRING,
DSPST TYPE STRING,
ALPST TYPE STRING,
ALPRF TYPE STRING,
ALPGR TYPE STRING,
NFGRP TYPE STRING,
KZNFP TYPE STRING,
NFEAG TYPE STRING,
PRVBE TYPE STRING,
NLFZV TYPE STRING,
NLFMV TYPE STRING,
ALEKZ TYPE STRING,
ITSOB TYPE STRING,
RFPNT TYPE STRING,
GUIDX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VCH_MBOM_ITEM_FIELDS_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_VCH_MBOM_ITEM_FIELDS_STR-KNOBJ sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-DATUV sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-TECHV sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-AENNR sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ANDAT sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ANNAM sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-AEDAT sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-AENAM sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-PSWRK sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-POSNR sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-SORTF sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-MEINS sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-FMENG sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-AUSCH sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-AVOAU sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-NETAU sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-SCHGT sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-BEIKZ sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ERSKZ sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-RVREL sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-SANFE sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-SANIN sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-SANKA sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-SANKO sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-SANVS sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-STKKZ sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-REKRI sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-REKRS sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-CADPO sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-NLFZT sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-VERTI sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ALPOS sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-EWAHR sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-EKGRP sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-LIFZT sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-LIFNR sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-PREIS sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-PEINH sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-WAERS sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-SAKTO sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ROANZ sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ROMS1 sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ROMS2 sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ROMS3 sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ROMEI sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ROMEN sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-RFORM sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-UPSKZ sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-LTXSP sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-POTX1 sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-POTX2 sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-OBJTY sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-MATKL sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-WEBAZ sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-DOKAR sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-DOKNR sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-DOKVR sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-DOKTL sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-CSSTR sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-EKORG sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-LGORT sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-KZKUP sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-INTRM sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-STVKN sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-DSPST sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ALPST sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ALPRF sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ALPGR sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-NFGRP sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-KZNFP sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-NFEAG sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-PRVBE sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-NLFZV sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-NLFMV sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ALEKZ sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-ITSOB sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-RFPNT sy-vline 
WA_VCH_MBOM_ITEM_FIELDS_STR-GUIDX sy-vline      INTO ld_text SEPARATED BY SPACE.

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