Operational Defect Database
BugZero found this defect 1308 days ago.
Data sources
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Microsoft SQL Server | 11455807
KB4056955 - FIX: Queries that cast string or binary data to XML take a long time to compile in SQL Server 2016 and 2017 - Microsoft Support
Last update date:
8/2/2023
Affected products:
SQL Server 2016 Service Pack 1
SQL Server 2016 Developer - duplicate (do not use)
SQL Server 2016 Enterprise - duplicate (do not use)
SQL Server 2016 Enterprise Core - duplicate (do not use)
SQL Server 2016 Standard - duplicate (do not use)
SQL Server 2017 on Windows (all editions)
SQL Server 2017 on Linux (all editions)
Affected releases:
build lower than 14.0.3022.28
Fixed releases:
14.0.3022.28
Description:
Symptoms
Assume that you run a query that casts string or binary data to Extended Markup Language (XML) datatype in Microsoft SQL Server 2016 and 2017. You may notice that the compilation time taken by the query might be much longer when compared to the compilation time taken in the earlier versions of SQL Server.
Resolution
This issue is fixed in the following cumulative updates for SQL Server: Cumulative Update 4 for SQL Server 2017 Cumulative Update 7 for SQL Server 2016 SP1
