ABAP Select data from SAP table VNMATVMZ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VNMATVMZ
*  INTO TABLE @DATA(IT_VNMATVMZ2).
*--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_VNMATVMZ INDEX 1 INTO DATA(WA_VNMATVMZ2).


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

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

ENDLOOP.

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

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


*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_VNMATVMZ-LNRLM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VNMATVMZ-LNRLM.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit GERNR, internal->external for field GERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_VNMATVMZ-GERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VNMATVMZ-GERNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field AUSSMEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VNMATVMZ-AUSSMEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VNMATVMZ-AUSSMEINH.
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_VNMATVMZ_STR, 
MANDT TYPE STRING,
LNRLM TYPE STRING,
LNRLM_P TYPE STRING,
FALNR TYPE STRING,
EINRI TYPE STRING,
LNRLS TYPE STRING,
MATNR TYPE STRING,
WERKS 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,
SHKZG 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,
STBEL TYPE STRING,
HCOKZ TYPE STRING,
UBLKZ TYPE STRING,
UAEKZ TYPE STRING,
MATFTEXT TYPE STRING,
EXCHARG TYPE STRING,
CONSDT TYPE STRING,
CONSTM TYPE STRING,
PERNR TYPE STRING,
GERNR TYPE STRING,
CONSVA TYPE STRING,
MATXT TYPE STRING,
MATKL TYPE STRING,
AUSSMEN TYPE STRING,
AUSSMEINH TYPE STRING,
VARBKZ TYPE STRING,
ENDDATE TYPE STRING,
SERNR TYPE STRING,
FRTXT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VNMATVMZ_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_VNMATVMZ_STR-MANDT sy-vline 
WA_VNMATVMZ_STR-LNRLM sy-vline 
WA_VNMATVMZ_STR-LNRLM_P sy-vline 
WA_VNMATVMZ_STR-FALNR sy-vline 
WA_VNMATVMZ_STR-EINRI sy-vline 
WA_VNMATVMZ_STR-LNRLS sy-vline 
WA_VNMATVMZ_STR-MATNR sy-vline 
WA_VNMATVMZ_STR-WERKS sy-vline 
WA_VNMATVMZ_STR-MBLNR sy-vline 
WA_VNMATVMZ_STR-MBPOS sy-vline 
WA_VNMATVMZ_STR-MJAHR sy-vline 
WA_VNMATVMZ_STR-EXMAT sy-vline 
WA_VNMATVMZ_STR-ANFOE sy-vline 
WA_VNMATVMZ_STR-ANPOE sy-vline 
WA_VNMATVMZ_STR-ERBOE sy-vline 
WA_VNMATVMZ_STR-PREIS sy-vline 
WA_VNMATVMZ_STR-WAERS sy-vline 
WA_VNMATVMZ_STR-ABRKZ sy-vline 
WA_VNMATVMZ_STR-MENGE sy-vline 
WA_VNMATVMZ_STR-MEINS sy-vline 
WA_VNMATVMZ_STR-SHKZG sy-vline 
WA_VNMATVMZ_STR-CHARG sy-vline 
WA_VNMATVMZ_STR-TCODE sy-vline 
WA_VNMATVMZ_STR-ERDAT sy-vline 
WA_VNMATVMZ_STR-ERUSR sy-vline 
WA_VNMATVMZ_STR-UPDAT sy-vline 
WA_VNMATVMZ_STR-UPUSR sy-vline 
WA_VNMATVMZ_STR-STORN sy-vline 
WA_VNMATVMZ_STR-STUSR sy-vline 
WA_VNMATVMZ_STR-STBEL sy-vline 
WA_VNMATVMZ_STR-HCOKZ sy-vline 
WA_VNMATVMZ_STR-UBLKZ sy-vline 
WA_VNMATVMZ_STR-UAEKZ sy-vline 
WA_VNMATVMZ_STR-MATFTEXT sy-vline 
WA_VNMATVMZ_STR-EXCHARG sy-vline 
WA_VNMATVMZ_STR-CONSDT sy-vline 
WA_VNMATVMZ_STR-CONSTM sy-vline 
WA_VNMATVMZ_STR-PERNR sy-vline 
WA_VNMATVMZ_STR-GERNR sy-vline 
WA_VNMATVMZ_STR-CONSVA sy-vline 
WA_VNMATVMZ_STR-MATXT sy-vline 
WA_VNMATVMZ_STR-MATKL sy-vline 
WA_VNMATVMZ_STR-AUSSMEN sy-vline 
WA_VNMATVMZ_STR-AUSSMEINH sy-vline 
WA_VNMATVMZ_STR-VARBKZ sy-vline 
WA_VNMATVMZ_STR-ENDDATE sy-vline 
WA_VNMATVMZ_STR-SERNR sy-vline 
WA_VNMATVMZ_STR-FRTXT sy-vline 
WA_VNMATVMZ_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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