FIX: PolyBase defaults string mapping for Microsoft Spark ODBC driver in SQL Server 2019

Applies to: SQL Server 2019 on Windows

Symptoms


When you use PolyBase GenericODBC connector to query Spark that uses the Microsoft Spark ODBC Driver, the type mapping for the"STRING" typewill recommend CHAR(8000) instead of VARCHAR(MAX) in SQL Server 2019.

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. 

Resolution


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:

References


Learn about the terminology that Microsoft uses to describe software updates.