Validate XML using XSD inside TSQL function in SQL Server 2012?

I need to validate XML using XSD inside TSQL. To make this task semi automated I need to do this inside TSQL function.

To make validation I have to set value to XML and if it is not valid I will receive an error.

My problem is that inside the TSQL function I can not use TRY / CATCH. Is this the propper way and if it is even possible to do this?

One option (possibly your only option if doing this within the context of a scalar function is a hard requirement) is to use SQLCLR. SQLCLR scalar functions can do try / catch / finally structures within the C# or VB.NET code. So, you could pass in both the XML document and the XSD, both as the SqlXml type, and do the validation there. Just return a SqlBoolean for whether or not it validated.

Be sure to do the following so that the SQLCLR function can participate in parallel plans:

• specify IsDeterministic = true in the SqlFunction attribute.

• make sure that the function is in an Assembly that is marked as WITH PERMISSION_SET = SAFE.

StackExchange Database Administrators Q#125116, answer score: 2