mysql> SELECT avg(coalesce(idata_value,0)) FROM idata_134 WHERE item_id=26 and idata_timestamp between 1381494998 and 1381497638;
+------------------------------+
| avg(coalesce(idata_value,0)) |
+------------------------------+
|                           22 |
+------------------------------+
1 row in set (0.00 sec)

Script:

startTime = 1381494998;
stopTime = 1381497638;
object = FindNodeObject(null,"TERM1");
trace(0, "*** VALUE: " . GetAvgDCIValue(object, FindDCIByDescription(object,"npThermoValue"), startTime, stopTime));
trace(0, "*** MAX: " . GetMaxDCIValue(object, FindDCIByDescription(object,"npThermoValue"), startTime, stopTime));
trace(0, "*** MIN: " . GetMinDCIValue(object, FindDCIByDescription(object,"npThermoValue"), startTime, stopTime));

Result:

[11-Oct-2013 17:34:24.413] [INFO ] *** VALUE: 2.000000
[11-Oct-2013 17:34:24.414] [INFO ] *** MAX: 22.000000
[11-Oct-2013 17:34:24.414] [INFO ] *** MIN: 22.000000

It's interested to note that MAX and MIN are showing correct numbers, however GetAvg still results to strange

[11-Oct-2013 14:00:55.172] [INFO ] *** TIME: 1381482055
[11-Oct-2013 14:00:55.173] [INFO ] *** VALUE: 4.000000
[11-Oct-2013 14:00:55.173] [INFO ] *** MAX: 369.000000
[11-Oct-2013 14:00:55.174] [INFO ] *** MIN: 359.000000

PS. I did direct Mysql query like you provided above and result was good value.

That's very strange. I just install MySQL 5.1 server, create new database, create dummy DCI of type "integer" with transformation script

return 22;

If I run the following script from console:

startTime = time() - 1800;
object = FindNodeObject(null,"HP8570W");
trace(0, "*** VALUE: " . GetAvgDCIValue(object, FindDCIByDescription(object,"TEST"), startTime, time()));

I got expected results:

netxmsd: exec avg
[11-Oct-2013 11:46:17.797] [INFO ] *** VALUE: 22.000000
INFO: Script finished with rc=0

Can you re-test it with some another DCI?

Best regards,
Victor

startTime = time() - 1800;
object = FindNodeObject(null,"TERM1");
trace(0, "*** VALUE: " . GetAvgDCIValue(FindNodeObject(null,"TERM1"), FindDCIByDescription(FindNodeObject(null,"TERM1"),"npThermoValue"), startTime, time()));

All DCI values in history are 22  (integer).

And the script output is:

*** VALUE: 2.000000

It seems like there is some sort of issue between NetXMS and MySQL, the output I get after executing the script is:

*** VALUE: 1.000000

Regards

Anders

I test this on Oracle and PostgreSQL - everything works as expected. Now I want to try this on MySQL.
You can try to create script in script library which will print received values to log:

startTime = time() - 3600;
trace(0, "*** VALUE: " . GetAvgDCIValue(FindObject("TEMPNODE01"), 176, startTime, time()));

and run it from server's console with exec command. What value it will show in log?

Best regards,
Victor

Sorry for nagging, I'm just curious to know if you can see any solution to my problem, or if I can assist with some additional data / information to solve this problem?

Regards

Anders

Sorry for the delay. I'm running a MySQL 5.1 server. I tried to execute the SQL query that you suggested and the result is: 104.7 which seems to be about the result that I'm expecting.

Regards

Anders

What database you are using? Basically all that GetAvgDCIValue does is SQL query like this:

SELECT avg(coalesce(idata_value,0)) FROM idata_<node_id> WHERE item_id=<dci_id> and idata_timestamp between <time_from> and <time_to>

If possible, try to run such query by hand and check the output for correctness.

Best regards,
Victor