ABAP Select data from SAP table MATVP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MATVP
*  INTO TABLE @DATA(IT_MATVP2).
*--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_MATVP INDEX 1 INTO DATA(WA_MATVP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MATVP>-MATNR = 1.
<MATVP>-WERKS = 1.
<MATVP>-BERID = 1.
<MATVP>-MAKTX = 1.
<MATVP>-PLIFZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MATVP-EISBE, sy-vline,
  WA_MATVP-UMLMC, sy-vline,
  WA_MATVP-WEBAZ, sy-vline,
  WA_MATVP-BESKZ, sy-vline,
  WA_MATVP-SOBES, sy-vline,
  WA_MATVP-SOBKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MATVP 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_MATVP 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_MATVP INTO WA_MATVP.


*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_MATVP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MATVP-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field PRBME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MATVP-PRBME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MATVP-PRBME.
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_MATVP_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
MAKTX TYPE STRING,
PLIFZ TYPE STRING,
EISBE TYPE STRING,
UMLMC TYPE STRING,
WEBAZ TYPE STRING,
BESKZ TYPE STRING,
SOBES TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
MEINS TYPE STRING,
WZEIT TYPE STRING,
DZEIT TYPE STRING,
BEARZ TYPE STRING,
RUEZT TYPE STRING,
TRANZ TYPE STRING,
MTVFP TYPE STRING,
DISPO TYPE STRING,
WERTU TYPE STRING,
MENGU TYPE STRING,
QMATV TYPE STRING,
KZAUS TYPE STRING,
AUSDT TYPE STRING,
MISKZ TYPE STRING,
DISMM TYPE STRING,
DISST TYPE STRING,
VRMOD TYPE STRING,
VINT1 TYPE STRING,
VINT2 TYPE STRING,
PRGRP TYPE STRING,
PRWRK TYPE STRING,
UMREF TYPE STRING,
PRBME TYPE STRING,
STRGR TYPE STRING,
DISGR TYPE STRING,
CUOBJ TYPE STRING,
BASMG TYPE STRING,
KZWSM TYPE STRING,
KZPSP TYPE STRING,
SGT_RCAT TYPE STRING,
XCHPF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MATVP_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_MATVP_STR-MATNR sy-vline 
WA_MATVP_STR-WERKS sy-vline 
WA_MATVP_STR-BERID sy-vline 
WA_MATVP_STR-MAKTX sy-vline 
WA_MATVP_STR-PLIFZ sy-vline 
WA_MATVP_STR-EISBE sy-vline 
WA_MATVP_STR-UMLMC sy-vline 
WA_MATVP_STR-WEBAZ sy-vline 
WA_MATVP_STR-BESKZ sy-vline 
WA_MATVP_STR-SOBES sy-vline 
WA_MATVP_STR-SOBKZ sy-vline 
WA_MATVP_STR-KZVBR sy-vline 
WA_MATVP_STR-MEINS sy-vline 
WA_MATVP_STR-WZEIT sy-vline 
WA_MATVP_STR-DZEIT sy-vline 
WA_MATVP_STR-BEARZ sy-vline 
WA_MATVP_STR-RUEZT sy-vline 
WA_MATVP_STR-TRANZ sy-vline 
WA_MATVP_STR-MTVFP sy-vline 
WA_MATVP_STR-DISPO sy-vline 
WA_MATVP_STR-WERTU sy-vline 
WA_MATVP_STR-MENGU sy-vline 
WA_MATVP_STR-QMATV sy-vline 
WA_MATVP_STR-KZAUS sy-vline 
WA_MATVP_STR-AUSDT sy-vline 
WA_MATVP_STR-MISKZ sy-vline 
WA_MATVP_STR-DISMM sy-vline 
WA_MATVP_STR-DISST sy-vline 
WA_MATVP_STR-VRMOD sy-vline 
WA_MATVP_STR-VINT1 sy-vline 
WA_MATVP_STR-VINT2 sy-vline 
WA_MATVP_STR-PRGRP sy-vline 
WA_MATVP_STR-PRWRK sy-vline 
WA_MATVP_STR-UMREF sy-vline 
WA_MATVP_STR-PRBME sy-vline 
WA_MATVP_STR-STRGR sy-vline 
WA_MATVP_STR-DISGR sy-vline 
WA_MATVP_STR-CUOBJ sy-vline 
WA_MATVP_STR-BASMG sy-vline 
WA_MATVP_STR-KZWSM sy-vline 
WA_MATVP_STR-KZPSP sy-vline 
WA_MATVP_STR-SGT_RCAT sy-vline 
WA_MATVP_STR-XCHPF sy-vline      INTO ld_text SEPARATED BY SPACE.

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