ABAP Select data from SAP table SIM_RSUSR200_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SIM_RSUSR200_ALV 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 SIM_RSUSR200_ALV. 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 SIM_RSUSR200_ALV 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_SIM_RSUSR200_ALV TYPE STANDARD TABLE OF SIM_RSUSR200_ALV,
      WA_SIM_RSUSR200_ALV TYPE SIM_RSUSR200_ALV,
      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: <SIM_RSUSR200_ALV> TYPE SIM_RSUSR200_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SIM_RSUSR200_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SIM_RSUSR200_ALV
  INTO TABLE IT_SIM_RSUSR200_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SIM_RSUSR200_ALV
*  INTO TABLE @DATA(IT_SIM_RSUSR200_ALV2).
*--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_SIM_RSUSR200_ALV INDEX 1 INTO DATA(WA_SIM_RSUSR200_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SIM_RSUSR200_ALV ASSIGNING <SIM_RSUSR200_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SIM_RSUSR200_ALV>-BNAME = 1.
<SIM_RSUSR200_ALV>-SYSTEM = 1.
<SIM_RSUSR200_ALV>-CLASS = 1.
<SIM_RSUSR200_ALV>-USTYP = 1.
<SIM_RSUSR200_ALV>-ANAME = 1.

ENDLOOP.

LOOP AT IT_SIM_RSUSR200_ALV INTO WA_SIM_RSUSR200_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SIM_RSUSR200_ALV-ERDAT, sy-vline,
  WA_SIM_RSUSR200_ALV-GLTGV, sy-vline,
  WA_SIM_RSUSR200_ALV-GLTGB, sy-vline,
  WA_SIM_RSUSR200_ALV-TRDAT1, sy-vline,
  WA_SIM_RSUSR200_ALV-LTIME, sy-vline,
  WA_SIM_RSUSR200_ALV-ICON_STATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SIM_RSUSR200_ALV 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_SIM_RSUSR200_ALV 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_SIM_RSUSR200_ALV INTO WA_SIM_RSUSR200_ALV.


*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 SYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SIM_RSUSR200_ALV-SYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SIM_RSUSR200_ALV-SYSTEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit USTYP, internal->external for field USTYP
CALL FUNCTION 'CONVERSION_EXIT_USTYP_OUTPUT'
  EXPORTING
    input =                      WA_SIM_RSUSR200_ALV-USTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SIM_RSUSR200_ALV-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_SIM_RSUSR200_ALV_STR, 
BNAME TYPE STRING,
SYSTEM TYPE STRING,
CLASS TYPE STRING,
USTYP TYPE STRING,
ANAME TYPE STRING,
ERDAT TYPE STRING,
GLTGV TYPE STRING,
GLTGB TYPE STRING,
TRDAT1 TYPE STRING,
LTIME TYPE STRING,
ICON_STATE TYPE STRING,
BCDA1 TYPE STRING,
ICON_LOCKED TYPE STRING,
LOCK_REASON TYPE STRING,
LOCNT TYPE STRING,
CODVN TYPE STRING,
USR02FLAG TYPE STRING,
TRDAT TYPE STRING,
COLOR TYPE STRING,
PWDLOCKDATE TYPE STRING,
RELEASE TYPE STRING,
SECURITY_POLICY TYPE STRING,
NAME_FIRST TYPE STRING,
NAME_LAST TYPE STRING,
DEPARTMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SIM_RSUSR200_ALV_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_SIM_RSUSR200_ALV_STR-BNAME sy-vline 
WA_SIM_RSUSR200_ALV_STR-SYSTEM sy-vline 
WA_SIM_RSUSR200_ALV_STR-CLASS sy-vline 
WA_SIM_RSUSR200_ALV_STR-USTYP sy-vline 
WA_SIM_RSUSR200_ALV_STR-ANAME sy-vline 
WA_SIM_RSUSR200_ALV_STR-ERDAT sy-vline 
WA_SIM_RSUSR200_ALV_STR-GLTGV sy-vline 
WA_SIM_RSUSR200_ALV_STR-GLTGB sy-vline 
WA_SIM_RSUSR200_ALV_STR-TRDAT1 sy-vline 
WA_SIM_RSUSR200_ALV_STR-LTIME sy-vline 
WA_SIM_RSUSR200_ALV_STR-ICON_STATE sy-vline 
WA_SIM_RSUSR200_ALV_STR-BCDA1 sy-vline 
WA_SIM_RSUSR200_ALV_STR-ICON_LOCKED sy-vline 
WA_SIM_RSUSR200_ALV_STR-LOCK_REASON sy-vline 
WA_SIM_RSUSR200_ALV_STR-LOCNT sy-vline 
WA_SIM_RSUSR200_ALV_STR-CODVN sy-vline 
WA_SIM_RSUSR200_ALV_STR-USR02FLAG sy-vline 
WA_SIM_RSUSR200_ALV_STR-TRDAT sy-vline 
WA_SIM_RSUSR200_ALV_STR-COLOR sy-vline 
WA_SIM_RSUSR200_ALV_STR-PWDLOCKDATE sy-vline 
WA_SIM_RSUSR200_ALV_STR-RELEASE sy-vline 
WA_SIM_RSUSR200_ALV_STR-SECURITY_POLICY sy-vline 
WA_SIM_RSUSR200_ALV_STR-NAME_FIRST sy-vline 
WA_SIM_RSUSR200_ALV_STR-NAME_LAST sy-vline 
WA_SIM_RSUSR200_ALV_STR-DEPARTMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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