Arun Sirpal demonstrates how to use query labels in Azure SQL Data Warehouse:
Using a query label in Azure SQL DW (Data Warehouse) can be a really handy technique to track queries via DMVs. You might want to do this to see what problematic queries are doing under the covers.
Let’s check out an example. First I will show you how things would look without using a query label. I connect to SQL DW and issue the following basic example query.
It’s an interesting approach and solves a problem I saw in Polybase around figuring out which session details were yours after the fact.