Hi Mahesh ,
My Source agent is proficy historian and its version 4.5.
As you mentioned i have tried in Tag Aggregate Query i am not getting the latest values for a second.
Coming to Output structure part i am getting output as you mentioned above , my scenario is like i will be query for 180 tags or more for every minute . so by looping logic /xpath to make NA or zero will lead to performance issue.
I think i need to work around in other ways.
Thanks for sharing your ideas mahesh and rohit.
Regards,
Adhikesh