Expression block in the stream analytics builder is not giving the output in the stream analytics builder

What product/components do you use and which version/fix level are you on?


Is your question related to the free trial, or to a production (customer) instance?


What are you trying to achieve? Please describe it in detail.

The logic in the expression block is input 1+ input 2.
When input2 is empty due to deletion.The input1+input2 is not giving any output.
How to solve this problem?

Do you get any error messages? Please provide a full error message screenshot and log file.


Have you installed all the latest fixes for the products and systems you are using?


I presume you refer to Analytics Builder here.
Can you attach a simple exported model to show this, with instructions how to reproduce?

Can you share the model as suggested by Robert?

The Expression block will only activate if all connected inputs are available. If one of them is not available but you still want the block to activate, you need to provide the value through other means. The exact approach is specific for the intended behavior of the model. Potential options:

  • Missing Data block to react if no data is available
  • Constant Value block to provide a default value

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