ABAP Select data from SAP table USRCD_W into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM USRCD_W
*  INTO TABLE @DATA(IT_USRCD_W2).
*--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_USRCD_W INDEX 1 INTO DATA(WA_USRCD_W2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<USRCD_W>-BNAME = 1.
<USRCD_W>-CHANGENR = 1.
<USRCD_W>-USERNAME = 1.
<USRCD_W>-NAME_FIRST = 1.
<USRCD_W>-NAME_LAST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_USRCD_W-DEPARTMENT, sy-vline,
  WA_USRCD_W-UDATE, sy-vline,
  WA_USRCD_W-UTIME, sy-vline,
  WA_USRCD_W-MODDA, sy-vline,
  WA_USRCD_W-MODTI, sy-vline,
  WA_USRCD_W-COUNTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_USRCD_W 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_USRCD_W 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_USRCD_W INTO WA_USRCD_W.


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

*Conversion exit USTYP, internal->external for field USTYP
CALL FUNCTION 'CONVERSION_EXIT_USTYP_OUTPUT'
  EXPORTING
    input =                      WA_USRCD_W-USTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USRCD_W-USTYP.
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_USRCD_W_STR, 
BNAME TYPE STRING,
CHANGENR TYPE STRING,
USERNAME TYPE STRING,
NAME_FIRST TYPE STRING,
NAME_LAST TYPE STRING,
DEPARTMENT TYPE STRING,
UDATE TYPE STRING,
UTIME TYPE STRING,
MODDA TYPE STRING,
MODTI TYPE STRING,
COUNTER TYPE STRING,
STATUS TYPE STRING,
TSTATUS TYPE STRING,
TNRPRO TYPE STRING,
PROFILE TYPE STRING,
AGR_NAME TYPE STRING,
TPWD TYPE STRING,
TPWDINIT TYPE STRING,
TGLTGV TYPE STRING,
TGLTGB TYPE STRING,
USTYP TYPE STRING,
CLASS TYPE STRING,
TUFLAG TYPE STRING,
ACCNT TYPE STRING,
SECURITY_POLICY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_USRCD_W_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_USRCD_W_STR-BNAME sy-vline 
WA_USRCD_W_STR-CHANGENR sy-vline 
WA_USRCD_W_STR-USERNAME sy-vline 
WA_USRCD_W_STR-NAME_FIRST sy-vline 
WA_USRCD_W_STR-NAME_LAST sy-vline 
WA_USRCD_W_STR-DEPARTMENT sy-vline 
WA_USRCD_W_STR-UDATE sy-vline 
WA_USRCD_W_STR-UTIME sy-vline 
WA_USRCD_W_STR-MODDA sy-vline 
WA_USRCD_W_STR-MODTI sy-vline 
WA_USRCD_W_STR-COUNTER sy-vline 
WA_USRCD_W_STR-STATUS sy-vline 
WA_USRCD_W_STR-TSTATUS sy-vline 
WA_USRCD_W_STR-TNRPRO sy-vline 
WA_USRCD_W_STR-PROFILE sy-vline 
WA_USRCD_W_STR-AGR_NAME sy-vline 
WA_USRCD_W_STR-TPWD sy-vline 
WA_USRCD_W_STR-TPWDINIT sy-vline 
WA_USRCD_W_STR-TGLTGV sy-vline 
WA_USRCD_W_STR-TGLTGB sy-vline 
WA_USRCD_W_STR-USTYP sy-vline 
WA_USRCD_W_STR-CLASS sy-vline 
WA_USRCD_W_STR-TUFLAG sy-vline 
WA_USRCD_W_STR-ACCNT sy-vline 
WA_USRCD_W_STR-SECURITY_POLICY sy-vline      INTO ld_text SEPARATED BY SPACE.

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