ABAP Select data from SAP table USRCD_T into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP USRCD_T 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_T. 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_T 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_T TYPE STANDARD TABLE OF USRCD_T,
      WA_USRCD_T TYPE USRCD_T,
      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_T> TYPE USRCD_T.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM USRCD_T
*  INTO TABLE @DATA(IT_USRCD_T2).
*--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_T INDEX 1 INTO DATA(WA_USRCD_T2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_USRCD_T-DEPARTMENT, sy-vline,
  WA_USRCD_T-UDATE, sy-vline,
  WA_USRCD_T-UTIME, sy-vline,
  WA_USRCD_T-MODDA, sy-vline,
  WA_USRCD_T-MODTI, sy-vline,
  WA_USRCD_T-T_USH04, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_USRCD_T 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_T 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_T INTO WA_USRCD_T.


*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_T-CHANGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USRCD_T-CHANGENR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field ADDRNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_USRCD_T-ADDRNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USRCD_T-ADDRNUMBER.
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_T_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,
T_USH04 TYPE STRING,
T_USR04 TYPE STRING,
T_USH02 TYPE STRING,
T_USR21 TYPE STRING,
T_AGR_USERS TYPE STRING,
COUNTER TYPE STRING,
MODBE TYPE STRING,
TCODE TYPE STRING,
REPID TYPE STRING,
CMD TYPE STRING,
LCS TYPE STRING,
NRPRO TYPE STRING,
PROFS TYPE STRING,
AGR_NAME TYPE STRING,
TPWD16 TYPE STRING,
TPWD20 TYPE STRING,
TPWD255 TYPE STRING,
CODVN TYPE STRING,
PWDINITIAL TYPE STRING,
GLTGV TYPE STRING,
GLTGB TYPE STRING,
USTYP TYPE STRING,
CLASS TYPE STRING,
UFLAG TYPE STRING,
ACCNT TYPE STRING,
PERSNUMBER TYPE STRING,
ADDRNUMBER TYPE STRING,
KOSTL TYPE STRING,
START_MENU TYPE STRING,
PWDSALTEDHASH TYPE STRING,
SECURITY_POLICY TYPE STRING,
T_CDPOS TYPE STRING,
CHNGIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_USRCD_T_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_T_STR-BNAME sy-vline 
WA_USRCD_T_STR-CHANGENR sy-vline 
WA_USRCD_T_STR-USERNAME sy-vline 
WA_USRCD_T_STR-NAME_FIRST sy-vline 
WA_USRCD_T_STR-NAME_LAST sy-vline 
WA_USRCD_T_STR-DEPARTMENT sy-vline 
WA_USRCD_T_STR-UDATE sy-vline 
WA_USRCD_T_STR-UTIME sy-vline 
WA_USRCD_T_STR-MODDA sy-vline 
WA_USRCD_T_STR-MODTI sy-vline 
WA_USRCD_T_STR-T_USH04 sy-vline 
WA_USRCD_T_STR-T_USR04 sy-vline 
WA_USRCD_T_STR-T_USH02 sy-vline 
WA_USRCD_T_STR-T_USR21 sy-vline 
WA_USRCD_T_STR-T_AGR_USERS sy-vline 
WA_USRCD_T_STR-COUNTER sy-vline 
WA_USRCD_T_STR-MODBE sy-vline 
WA_USRCD_T_STR-TCODE sy-vline 
WA_USRCD_T_STR-REPID sy-vline 
WA_USRCD_T_STR-CMD sy-vline 
WA_USRCD_T_STR-LCS sy-vline 
WA_USRCD_T_STR-NRPRO sy-vline 
WA_USRCD_T_STR-PROFS sy-vline 
WA_USRCD_T_STR-AGR_NAME sy-vline 
WA_USRCD_T_STR-TPWD16 sy-vline 
WA_USRCD_T_STR-TPWD20 sy-vline 
WA_USRCD_T_STR-TPWD255 sy-vline 
WA_USRCD_T_STR-CODVN sy-vline 
WA_USRCD_T_STR-PWDINITIAL sy-vline 
WA_USRCD_T_STR-GLTGV sy-vline 
WA_USRCD_T_STR-GLTGB sy-vline 
WA_USRCD_T_STR-USTYP sy-vline 
WA_USRCD_T_STR-CLASS sy-vline 
WA_USRCD_T_STR-UFLAG sy-vline 
WA_USRCD_T_STR-ACCNT sy-vline 
WA_USRCD_T_STR-PERSNUMBER sy-vline 
WA_USRCD_T_STR-ADDRNUMBER sy-vline 
WA_USRCD_T_STR-KOSTL sy-vline 
WA_USRCD_T_STR-START_MENU sy-vline 
WA_USRCD_T_STR-PWDSALTEDHASH sy-vline 
WA_USRCD_T_STR-SECURITY_POLICY sy-vline 
WA_USRCD_T_STR-T_CDPOS sy-vline 
WA_USRCD_T_STR-CHNGIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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