ABAP Select data from SAP table AUVT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AUVT
*  INTO TABLE @DATA(IT_AUVT2).
*--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_AUVT INDEX 1 INTO DATA(WA_AUVT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AUVT>-MANDT = 1.
<AUVT>-ABELN = 1.
<AUVT>-ABELP = 1.
<AUVT>-FIWRK = 1.
<AUVT>-VSTEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AUVT-VZWRK, sy-vline,
  WA_AUVT-LPRIO, sy-vline,
  WA_AUVT-ROUTE, sy-vline,
  WA_AUVT-FILWE, sy-vline,
  WA_AUVT-FILAG, sy-vline,
  WA_AUVT-SPDNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AUVT 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_AUVT 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_AUVT INTO WA_AUVT.


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

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

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

*Conversion exit ALPHA, internal->external for field SPDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AUVT-SPDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUVT-SPDNR.
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_AUVT_STR, 
MANDT TYPE STRING,
ABELN TYPE STRING,
ABELP TYPE STRING,
FIWRK TYPE STRING,
VSTEL TYPE STRING,
VZWRK TYPE STRING,
LPRIO TYPE STRING,
ROUTE TYPE STRING,
FILWE TYPE STRING,
FILAG TYPE STRING,
SPDNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
PLIFZ TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
ABLAD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AUVT_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_AUVT_STR-MANDT sy-vline 
WA_AUVT_STR-ABELN sy-vline 
WA_AUVT_STR-ABELP sy-vline 
WA_AUVT_STR-FIWRK sy-vline 
WA_AUVT_STR-VSTEL sy-vline 
WA_AUVT_STR-VZWRK sy-vline 
WA_AUVT_STR-LPRIO sy-vline 
WA_AUVT_STR-ROUTE sy-vline 
WA_AUVT_STR-FILWE sy-vline 
WA_AUVT_STR-FILAG sy-vline 
WA_AUVT_STR-SPDNR sy-vline 
WA_AUVT_STR-VKORG sy-vline 
WA_AUVT_STR-VTWEG sy-vline 
WA_AUVT_STR-SPART sy-vline 
WA_AUVT_STR-PLIFZ sy-vline 
WA_AUVT_STR-WERKS sy-vline 
WA_AUVT_STR-LGORT sy-vline 
WA_AUVT_STR-ABLAD sy-vline      INTO ld_text SEPARATED BY SPACE.

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