ABAP Select data from SAP table SYBMON_IOCONTROLLER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SYBMON_IOCONTROLLER
*  INTO TABLE @DATA(IT_SYBMON_IOCONTROLLER2).
*--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_SYBMON_IOCONTROLLER INDEX 1 INTO DATA(WA_SYBMON_IOCONTROLLER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SYBMON_IOCONTROLLER>-INSTANCEID = 1.
<SYBMON_IOCONTROLLER>-CONTROLLERID = 1.
<SYBMON_IOCONTROLLER>-KTID = 1.
<SYBMON_IOCONTROLLER>-ENGINENUMBER = 1.
<SYBMON_IOCONTROLLER>-BLOCKINGPOLLS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SYBMON_IOCONTROLLER-NONBLOCKINGPOLLS, sy-vline,
  WA_SYBMON_IOCONTROLLER-EVENTPOLLS, sy-vline,
  WA_SYBMON_IOCONTROLLER-NONBLOCKINGEVENTPOLLS, sy-vline,
  WA_SYBMON_IOCONTROLLER-FULLPOLLS, sy-vline,
  WA_SYBMON_IOCONTROLLER-EVENTS, sy-vline,
  WA_SYBMON_IOCONTROLLER-EVENTS_PER_EVENTPOLL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SYBMON_IOCONTROLLER 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_SYBMON_IOCONTROLLER 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_SYBMON_IOCONTROLLER INTO WA_SYBMON_IOCONTROLLER.


*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_SYBMON_IOCONTROLLER_STR, 
INSTANCEID TYPE STRING,
CONTROLLERID TYPE STRING,
KTID TYPE STRING,
ENGINENUMBER TYPE STRING,
BLOCKINGPOLLS TYPE STRING,
NONBLOCKINGPOLLS TYPE STRING,
EVENTPOLLS TYPE STRING,
NONBLOCKINGEVENTPOLLS TYPE STRING,
FULLPOLLS TYPE STRING,
EVENTS TYPE STRING,
EVENTS_PER_EVENTPOLL TYPE STRING,
EVENTHWM TYPE STRING,
PENDING_SAMPLE TYPE STRING,
COMPLETED TYPE STRING,
READS TYPE STRING,
WRITES TYPE STRING,
READS_PER_SEC TYPE STRING,
WRITES_PER_SEC TYPE STRING,
DEFERRED TYPE STRING,
CONTROLLER_TYPE TYPE STRING,
CONTROLLER_TYPE_CNT TYPE STRING,
SNAPSHOT_TIMESTAMP TYPE STRING,
TIMESTAMP_FROM TYPE STRING,
TIMESTAMP_TO TYPE STRING,
TIME_PERIOD TYPE STRING,
SOURCE_HOSTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SYBMON_IOCONTROLLER_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_SYBMON_IOCONTROLLER_STR-INSTANCEID sy-vline 
WA_SYBMON_IOCONTROLLER_STR-CONTROLLERID sy-vline 
WA_SYBMON_IOCONTROLLER_STR-KTID sy-vline 
WA_SYBMON_IOCONTROLLER_STR-ENGINENUMBER sy-vline 
WA_SYBMON_IOCONTROLLER_STR-BLOCKINGPOLLS sy-vline 
WA_SYBMON_IOCONTROLLER_STR-NONBLOCKINGPOLLS sy-vline 
WA_SYBMON_IOCONTROLLER_STR-EVENTPOLLS sy-vline 
WA_SYBMON_IOCONTROLLER_STR-NONBLOCKINGEVENTPOLLS sy-vline 
WA_SYBMON_IOCONTROLLER_STR-FULLPOLLS sy-vline 
WA_SYBMON_IOCONTROLLER_STR-EVENTS sy-vline 
WA_SYBMON_IOCONTROLLER_STR-EVENTS_PER_EVENTPOLL sy-vline 
WA_SYBMON_IOCONTROLLER_STR-EVENTHWM sy-vline 
WA_SYBMON_IOCONTROLLER_STR-PENDING_SAMPLE sy-vline 
WA_SYBMON_IOCONTROLLER_STR-COMPLETED sy-vline 
WA_SYBMON_IOCONTROLLER_STR-READS sy-vline 
WA_SYBMON_IOCONTROLLER_STR-WRITES sy-vline 
WA_SYBMON_IOCONTROLLER_STR-READS_PER_SEC sy-vline 
WA_SYBMON_IOCONTROLLER_STR-WRITES_PER_SEC sy-vline 
WA_SYBMON_IOCONTROLLER_STR-DEFERRED sy-vline 
WA_SYBMON_IOCONTROLLER_STR-CONTROLLER_TYPE sy-vline 
WA_SYBMON_IOCONTROLLER_STR-CONTROLLER_TYPE_CNT sy-vline 
WA_SYBMON_IOCONTROLLER_STR-SNAPSHOT_TIMESTAMP sy-vline 
WA_SYBMON_IOCONTROLLER_STR-TIMESTAMP_FROM sy-vline 
WA_SYBMON_IOCONTROLLER_STR-TIMESTAMP_TO sy-vline 
WA_SYBMON_IOCONTROLLER_STR-TIME_PERIOD sy-vline 
WA_SYBMON_IOCONTROLLER_STR-SOURCE_HOSTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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