ABAP Select data from SAP table MV03V into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MV03V 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 MV03V. 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 MV03V 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_MV03V TYPE STANDARD TABLE OF MV03V,
      WA_MV03V TYPE MV03V,
      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: <MV03V> TYPE MV03V.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MV03V.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MV03V
  INTO TABLE IT_MV03V.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MV03V
*  INTO TABLE @DATA(IT_MV03V2).
*--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_MV03V INDEX 1 INTO DATA(WA_MV03V2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MV03V ASSIGNING <MV03V>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MV03V>-MNTGA = 1.
<MV03V>-AENKZ = 1.
<MV03V>-TRTYP = 1.
<MV03V>-AUART_PP = 1.
<MV03V>-CNFKZ = 1.

ENDLOOP.

LOOP AT IT_MV03V INTO WA_MV03V.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MV03V-VKOMP, sy-vline,
  WA_MV03V-KZAKP, sy-vline,
  WA_MV03V-KOTYP, sy-vline,
  WA_MV03V-KOBEA, sy-vline,
  WA_MV03V-VFDIA, sy-vline,
  WA_MV03V-VKAPA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MV03V 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_MV03V 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_MV03V INTO WA_MV03V.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_MV03V_STR, 
MNTGA TYPE STRING,
AENKZ TYPE STRING,
TRTYP TYPE STRING,
AUART_PP TYPE STRING,
CNFKZ TYPE STRING,
VKOMP TYPE STRING,
KZAKP TYPE STRING,
KOTYP TYPE STRING,
KOBEA TYPE STRING,
VFDIA TYPE STRING,
VKAPA TYPE STRING,
CUOBJ TYPE STRING,
PWERT TYPE STRING,
WAERS TYPE STRING,
SERNR TYPE STRING,
EFFEX TYPE STRING,
LPRIO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MV03V_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_MV03V_STR-MNTGA sy-vline 
WA_MV03V_STR-AENKZ sy-vline 
WA_MV03V_STR-TRTYP sy-vline 
WA_MV03V_STR-AUART_PP sy-vline 
WA_MV03V_STR-CNFKZ sy-vline 
WA_MV03V_STR-VKOMP sy-vline 
WA_MV03V_STR-KZAKP sy-vline 
WA_MV03V_STR-KOTYP sy-vline 
WA_MV03V_STR-KOBEA sy-vline 
WA_MV03V_STR-VFDIA sy-vline 
WA_MV03V_STR-VKAPA sy-vline 
WA_MV03V_STR-CUOBJ sy-vline 
WA_MV03V_STR-PWERT sy-vline 
WA_MV03V_STR-WAERS sy-vline 
WA_MV03V_STR-SERNR sy-vline 
WA_MV03V_STR-EFFEX sy-vline 
WA_MV03V_STR-LPRIO sy-vline      INTO ld_text SEPARATED BY SPACE.

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