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PolyBase, Excel, and the TOP Operator

I follow up on a bug from SQL Server 2019 CU2:

Back with SQL Server 2019 CU2, I reported an error with PolyBase connecting to Excel when trying to select TOP(10) from the table. I’m using the Microsoft Access Database Engine 2016 Redistributable’s Excel driver.

Click through for an explanation of what’s happened since then on this front.