ABAP Select data from SAP table VUSER001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VUSER001 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 VUSER001. 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 VUSER001 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_VUSER001 TYPE STANDARD TABLE OF VUSER001,
      WA_VUSER001 TYPE VUSER001,
      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: <VUSER001> TYPE VUSER001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VUSER001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VUSER001
  INTO TABLE IT_VUSER001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VUSER001
*  INTO TABLE @DATA(IT_VUSER0012).
*--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_VUSER001 INDEX 1 INTO DATA(WA_VUSER0012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VUSER001 ASSIGNING <VUSER001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VUSER001>-MANDT = 1.
<VUSER001>-BNAME = 1.
<VUSER001>-STCOD = 1.
<VUSER001>-SPLD = 1.
<VUSER001>-SPLG = 1.

ENDLOOP.

LOOP AT IT_VUSER001 INTO WA_VUSER001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VUSER001-SPDB, sy-vline,
  WA_VUSER001-SPDA, sy-vline,
  WA_VUSER001-DATFM, sy-vline,
  WA_VUSER001-DCPFM, sy-vline,
  WA_VUSER001-HDEST, sy-vline,
  WA_VUSER001-HMAND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VUSER001 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_VUSER001 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_VUSER001 INTO WA_VUSER001.


*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 SPDEV, internal->external for field SPLD
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_VUSER001-SPLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VUSER001-SPLD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_VUSER001-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VUSER001-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit USTYP, internal->external for field USTYP
CALL FUNCTION 'CONVERSION_EXIT_USTYP_OUTPUT'
  EXPORTING
    input =                      WA_VUSER001-USTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VUSER001-USTYP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_VUSER001-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VUSER001-SPRAS.
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_VUSER001_STR, 
MANDT TYPE STRING,
BNAME TYPE STRING,
STCOD TYPE STRING,
SPLD TYPE STRING,
SPLG TYPE STRING,
SPDB TYPE STRING,
SPDA TYPE STRING,
DATFM TYPE STRING,
DCPFM TYPE STRING,
HDEST TYPE STRING,
HMAND TYPE STRING,
HNAME TYPE STRING,
MENON TYPE STRING,
MENUE TYPE STRING,
STRTT TYPE STRING,
LANGU TYPE STRING,
CATTKENNZ TYPE STRING,
BCODE TYPE STRING,
GLTGV TYPE STRING,
GLTGB TYPE STRING,
USTYP TYPE STRING,
CLASS TYPE STRING,
LOCNT TYPE STRING,
UFLAG TYPE STRING,
ACCNT TYPE STRING,
ANAME TYPE STRING,
ERDAT TYPE STRING,
TRDAT TYPE STRING,
LTIME TYPE STRING,
OCOD1 TYPE STRING,
BCDA1 TYPE STRING,
CODV1 TYPE STRING,
OCOD2 TYPE STRING,
BCDA2 TYPE STRING,
CODV2 TYPE STRING,
OCOD3 TYPE STRING,
BCDA3 TYPE STRING,
CODV3 TYPE STRING,
OCOD4 TYPE STRING,
BCDA4 TYPE STRING,
CODV4 TYPE STRING,
OCOD5 TYPE STRING,
BCDA5 TYPE STRING,
CODV5 TYPE STRING,
VERSN TYPE STRING,
CODVN TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
SALUT TYPE STRING,
ABTLG TYPE STRING,
KOSTL TYPE STRING,
BUINR TYPE STRING,
ROONR TYPE STRING,
STRAS TYPE STRING,
PFACH TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
REGIO TYPE STRING,
LAND1 TYPE STRING,
SPRAS TYPE STRING,
TELPR TYPE STRING,
TELNR TYPE STRING,
TEL01 TYPE STRING,
TEL02 TYPE STRING,
TELX1 TYPE STRING,
TELFX TYPE STRING,
TELTX TYPE STRING,
ORT02 TYPE STRING,
PSTL2 TYPE STRING,
TZONE TYPE STRING,
PROFILE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VUSER001_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_VUSER001_STR-MANDT sy-vline 
WA_VUSER001_STR-BNAME sy-vline 
WA_VUSER001_STR-STCOD sy-vline 
WA_VUSER001_STR-SPLD sy-vline 
WA_VUSER001_STR-SPLG sy-vline 
WA_VUSER001_STR-SPDB sy-vline 
WA_VUSER001_STR-SPDA sy-vline 
WA_VUSER001_STR-DATFM sy-vline 
WA_VUSER001_STR-DCPFM sy-vline 
WA_VUSER001_STR-HDEST sy-vline 
WA_VUSER001_STR-HMAND sy-vline 
WA_VUSER001_STR-HNAME sy-vline 
WA_VUSER001_STR-MENON sy-vline 
WA_VUSER001_STR-MENUE sy-vline 
WA_VUSER001_STR-STRTT sy-vline 
WA_VUSER001_STR-LANGU sy-vline 
WA_VUSER001_STR-CATTKENNZ sy-vline 
WA_VUSER001_STR-BCODE sy-vline 
WA_VUSER001_STR-GLTGV sy-vline 
WA_VUSER001_STR-GLTGB sy-vline 
WA_VUSER001_STR-USTYP sy-vline 
WA_VUSER001_STR-CLASS sy-vline 
WA_VUSER001_STR-LOCNT sy-vline 
WA_VUSER001_STR-UFLAG sy-vline 
WA_VUSER001_STR-ACCNT sy-vline 
WA_VUSER001_STR-ANAME sy-vline 
WA_VUSER001_STR-ERDAT sy-vline 
WA_VUSER001_STR-TRDAT sy-vline 
WA_VUSER001_STR-LTIME sy-vline 
WA_VUSER001_STR-OCOD1 sy-vline 
WA_VUSER001_STR-BCDA1 sy-vline 
WA_VUSER001_STR-CODV1 sy-vline 
WA_VUSER001_STR-OCOD2 sy-vline 
WA_VUSER001_STR-BCDA2 sy-vline 
WA_VUSER001_STR-CODV2 sy-vline 
WA_VUSER001_STR-OCOD3 sy-vline 
WA_VUSER001_STR-BCDA3 sy-vline 
WA_VUSER001_STR-CODV3 sy-vline 
WA_VUSER001_STR-OCOD4 sy-vline 
WA_VUSER001_STR-BCDA4 sy-vline 
WA_VUSER001_STR-CODV4 sy-vline 
WA_VUSER001_STR-OCOD5 sy-vline 
WA_VUSER001_STR-BCDA5 sy-vline 
WA_VUSER001_STR-CODV5 sy-vline 
WA_VUSER001_STR-VERSN sy-vline 
WA_VUSER001_STR-CODVN sy-vline 
WA_VUSER001_STR-NAME1 sy-vline 
WA_VUSER001_STR-NAME2 sy-vline 
WA_VUSER001_STR-NAME3 sy-vline 
WA_VUSER001_STR-NAME4 sy-vline 
WA_VUSER001_STR-SALUT sy-vline 
WA_VUSER001_STR-ABTLG sy-vline 
WA_VUSER001_STR-KOSTL sy-vline 
WA_VUSER001_STR-BUINR sy-vline 
WA_VUSER001_STR-ROONR sy-vline 
WA_VUSER001_STR-STRAS sy-vline 
WA_VUSER001_STR-PFACH sy-vline 
WA_VUSER001_STR-PSTLZ sy-vline 
WA_VUSER001_STR-ORT01 sy-vline 
WA_VUSER001_STR-REGIO sy-vline 
WA_VUSER001_STR-LAND1 sy-vline 
WA_VUSER001_STR-SPRAS sy-vline 
WA_VUSER001_STR-TELPR sy-vline 
WA_VUSER001_STR-TELNR sy-vline 
WA_VUSER001_STR-TEL01 sy-vline 
WA_VUSER001_STR-TEL02 sy-vline 
WA_VUSER001_STR-TELX1 sy-vline 
WA_VUSER001_STR-TELFX sy-vline 
WA_VUSER001_STR-TELTX sy-vline 
WA_VUSER001_STR-ORT02 sy-vline 
WA_VUSER001_STR-PSTL2 sy-vline 
WA_VUSER001_STR-TZONE sy-vline 
WA_VUSER001_STR-PROFILE sy-vline      INTO ld_text SEPARATED BY SPACE.

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