ABAP Select data from SAP table VUSR02_PWD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VUSR02_PWD 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 VUSR02_PWD. 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 VUSR02_PWD 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_VUSR02_PWD TYPE STANDARD TABLE OF VUSR02_PWD,
      WA_VUSR02_PWD TYPE VUSR02_PWD,
      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: <VUSR02_PWD> TYPE VUSR02_PWD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VUSR02_PWD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VUSR02_PWD
  INTO TABLE IT_VUSR02_PWD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VUSR02_PWD
*  INTO TABLE @DATA(IT_VUSR02_PWD2).
*--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_VUSR02_PWD INDEX 1 INTO DATA(WA_VUSR02_PWD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VUSR02_PWD ASSIGNING <VUSR02_PWD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VUSR02_PWD>-MANDT = 1.
<VUSR02_PWD>-BNAME = 1.
<VUSR02_PWD>-BCODE = 1.
<VUSR02_PWD>-LTIME = 1.
<VUSR02_PWD>-CODVN = 1.

ENDLOOP.

LOOP AT IT_VUSR02_PWD INTO WA_VUSR02_PWD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VUSR02_PWD-PASSCODE, sy-vline,
  WA_VUSR02_PWD-PWDCHGDATE, sy-vline,
  WA_VUSR02_PWD-PWDHISTORY, sy-vline,
  WA_VUSR02_PWD-PWDLGNDATE, sy-vline,
  WA_VUSR02_PWD-PWDSETDATE, sy-vline,
  WA_VUSR02_PWD-PWDINITIAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VUSR02_PWD 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_VUSR02_PWD 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_VUSR02_PWD INTO WA_VUSR02_PWD.


*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_VUSR02_PWD_STR, 
MANDT TYPE STRING,
BNAME TYPE STRING,
BCODE TYPE STRING,
LTIME TYPE STRING,
CODVN TYPE STRING,
PASSCODE TYPE STRING,
PWDCHGDATE TYPE STRING,
PWDHISTORY TYPE STRING,
PWDLGNDATE TYPE STRING,
PWDSETDATE TYPE STRING,
PWDINITIAL TYPE STRING,
PWDSALTEDHASH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VUSR02_PWD_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_VUSR02_PWD_STR-MANDT sy-vline 
WA_VUSR02_PWD_STR-BNAME sy-vline 
WA_VUSR02_PWD_STR-BCODE sy-vline 
WA_VUSR02_PWD_STR-LTIME sy-vline 
WA_VUSR02_PWD_STR-CODVN sy-vline 
WA_VUSR02_PWD_STR-PASSCODE sy-vline 
WA_VUSR02_PWD_STR-PWDCHGDATE sy-vline 
WA_VUSR02_PWD_STR-PWDHISTORY sy-vline 
WA_VUSR02_PWD_STR-PWDLGNDATE sy-vline 
WA_VUSR02_PWD_STR-PWDSETDATE sy-vline 
WA_VUSR02_PWD_STR-PWDINITIAL sy-vline 
WA_VUSR02_PWD_STR-PWDSALTEDHASH sy-vline      INTO ld_text SEPARATED BY SPACE.

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