Many ISV applications use ODBC API Server Cursors. One source of developer confusion when coding and debugging API Server Cursors against previous versions of SQL Server (6.5, 7.0, & 2000) was Implicit Cursor Conversions, also known as cursor degradation...

MARS is a powerful tool, but you may shoot yourself by the foot if you don't use it correctly. In the following several talks, I will talk about how to use MARS safely. This talk will cover the session/request context management. In later talks, I will...

When the user code will try to access a resource outside of the SQL server it will run in the security context under which SQL Server is running. But this is not the ideal situation since it could become a security issue when the logged user that calls...

Assembly redirection is not supported in SQL CLR. Assembly redirection can be done using publisher, application configuration and machine configuration files. SQL Server 2005 uses application configuration to redirect assembly call after Alter Assembly...

Recently several users of SQL Server ran into interesting issues related to hashing of T-SQL text by SQL Server for caching purposes. This blog post will describe how SQL Server performs this hashing, and the differences in behavior between 2000 and 2005...

This is a sample on how to register satellite assemblies in SQL Server 2005. Based on the CultureInfo on the executing thread, CLR will try to load the respective resource assembly. It should not be a difference between satellite assemblies inside...

TSQL uses a copy-in/copy-out semantics to pass parameters to stored procedures and functions. This is a different semantics then the usual by-value or by-reference parameter passing semantics supported by most languages. What does this mean? When a...

I part 1 we created a nice user defined aggregate. Now we are going to make it more sophisticated and let its value depend on two parameters ShipCountry and ShipShipCity. You might try having two parameters in Accumulate function of the aggregate but...

SQL Server 2005 allows creating of User Defined Aggregate in any of the .NET languages such as C# or VB. For simple cases like SUM or MAX you probably want to use built-in aggregates, however there are cases where build-ins are insufficient. In such cases...

In this section, i am going to introduce some basic diagnostic tools. You may already be familiar with Dynamic Management Views. We modified a few existing DMVs and added a few new ones to help with some transparency to the execution of sqlclr code in...