Assume that you use PolyBase in SQL Server 2019. When you run a query that uses XML PATH, you may receive an error message that resembles the following:
Msg 7320, Level 16, State 110, Line LineNumber
Cannot execute the query "Remote Query" against OLE DB provider "MSOLEDBSQL" for linked server "(null)". Unknown type Xml at GetSqlTypeId.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This issue is fixed in the following cumulative update for SQL Server:
About cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server: