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<@U03S4ADAQ5T> your 1st microservice produces a specific attributed per workflow and you want to get a trace with that attribute and calculate avg latency breakdown by service?

Also, are you interested in 1 trace of that workflow and calculate avg latency per service in that trace or you want to do know the avg latency per service of all the traces matching that criteria? Criteria being the presence of a specific attribute in the rootspan (or any span if it's unique to the 1st service)

the usecase is very interesting. I will be willing to look deeper into this. Please try to share more details :slightly_smiling_face:

basic on how to write clickhouse queries <https://signoz.io/docs/tutorial/writing-clickhouse-queries-in-dashboard/>

but we can help you write better queries too