ABAP Select data from SAP table V_N1MATVM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_N1MATVM 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 V_N1MATVM. 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 V_N1MATVM 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_V_N1MATVM TYPE STANDARD TABLE OF V_N1MATVM,
      WA_V_N1MATVM TYPE V_N1MATVM,
      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: <V_N1MATVM> TYPE V_N1MATVM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_N1MATVM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_N1MATVM
  INTO TABLE IT_V_N1MATVM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_N1MATVM
*  INTO TABLE @DATA(IT_V_N1MATVM2).
*--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_V_N1MATVM INDEX 1 INTO DATA(WA_V_N1MATVM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_N1MATVM ASSIGNING <V_N1MATVM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_N1MATVM>-MANDT = 1.
<V_N1MATVM>-LNRLM = 1.
<V_N1MATVM>-LNRLM_P = 1.
<V_N1MATVM>-FALNR = 1.
<V_N1MATVM>-EINRI = 1.

ENDLOOP.

LOOP AT IT_V_N1MATVM INTO WA_V_N1MATVM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_N1MATVM-LNRLS, sy-vline,
  WA_V_N1MATVM-MATNR, sy-vline,
  WA_V_N1MATVM-MBLNR, sy-vline,
  WA_V_N1MATVM-MBPOS, sy-vline,
  WA_V_N1MATVM-MJAHR, sy-vline,
  WA_V_N1MATVM-EXMAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_N1MATVM 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_V_N1MATVM 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_V_N1MATVM INTO WA_V_N1MATVM.


*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 LNRLM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-LNRLM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-LNRLM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRLM_P
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-LNRLM_P
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-LNRLM_P.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRLS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-LNRLS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-LNRLS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EXMAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-EXMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-EXMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANFOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-ANFOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-ANFOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANPOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-ANPOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-ANPOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ERBOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-ERBOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-ERBOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AUSSMEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-AUSSMEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-AUSSMEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-STBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-STBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRLS_M
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N1MATVM-LNRLS_M
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N1MATVM-LNRLS_M.
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_V_N1MATVM_STR, 
MANDT TYPE STRING,
LNRLM TYPE STRING,
LNRLM_P TYPE STRING,
FALNR TYPE STRING,
EINRI TYPE STRING,
LNRLS TYPE STRING,
MATNR TYPE STRING,
MBLNR TYPE STRING,
MBPOS TYPE STRING,
MJAHR TYPE STRING,
EXMAT TYPE STRING,
ANFOE TYPE STRING,
ANPOE TYPE STRING,
ERBOE TYPE STRING,
PREIS TYPE STRING,
WAERS TYPE STRING,
ABRKZ TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
CHARG TYPE STRING,
TCODE TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
AUSSMEN TYPE STRING,
AUSSMEINH TYPE STRING,
VARBKZ TYPE STRING,
ENDDATE TYPE STRING,
WERKS TYPE STRING,
SHKZG TYPE STRING,
STBEL TYPE STRING,
LNRLS_M TYPE STRING,
SERNR TYPE STRING,
FRTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_N1MATVM_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_V_N1MATVM_STR-MANDT sy-vline 
WA_V_N1MATVM_STR-LNRLM sy-vline 
WA_V_N1MATVM_STR-LNRLM_P sy-vline 
WA_V_N1MATVM_STR-FALNR sy-vline 
WA_V_N1MATVM_STR-EINRI sy-vline 
WA_V_N1MATVM_STR-LNRLS sy-vline 
WA_V_N1MATVM_STR-MATNR sy-vline 
WA_V_N1MATVM_STR-MBLNR sy-vline 
WA_V_N1MATVM_STR-MBPOS sy-vline 
WA_V_N1MATVM_STR-MJAHR sy-vline 
WA_V_N1MATVM_STR-EXMAT sy-vline 
WA_V_N1MATVM_STR-ANFOE sy-vline 
WA_V_N1MATVM_STR-ANPOE sy-vline 
WA_V_N1MATVM_STR-ERBOE sy-vline 
WA_V_N1MATVM_STR-PREIS sy-vline 
WA_V_N1MATVM_STR-WAERS sy-vline 
WA_V_N1MATVM_STR-ABRKZ sy-vline 
WA_V_N1MATVM_STR-MENGE sy-vline 
WA_V_N1MATVM_STR-MEINS sy-vline 
WA_V_N1MATVM_STR-CHARG sy-vline 
WA_V_N1MATVM_STR-TCODE sy-vline 
WA_V_N1MATVM_STR-ERDAT sy-vline 
WA_V_N1MATVM_STR-ERUSR sy-vline 
WA_V_N1MATVM_STR-UPDAT sy-vline 
WA_V_N1MATVM_STR-UPUSR sy-vline 
WA_V_N1MATVM_STR-STORN sy-vline 
WA_V_N1MATVM_STR-STUSR sy-vline 
WA_V_N1MATVM_STR-AUSSMEN sy-vline 
WA_V_N1MATVM_STR-AUSSMEINH sy-vline 
WA_V_N1MATVM_STR-VARBKZ sy-vline 
WA_V_N1MATVM_STR-ENDDATE sy-vline 
WA_V_N1MATVM_STR-WERKS sy-vline 
WA_V_N1MATVM_STR-SHKZG sy-vline 
WA_V_N1MATVM_STR-STBEL sy-vline 
WA_V_N1MATVM_STR-LNRLS_M sy-vline 
WA_V_N1MATVM_STR-SERNR sy-vline 
WA_V_N1MATVM_STR-FRTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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