How to pass a NULL value in a message to a queue in SQL Server
The SEND Transact-SQL verb does not allow to send a NULL message body, attempting to do so will result in error: Msg 8433, Level 16, State 1, Line 11 The message body may not be NULL. A zero-length...
View ArticleFILESTREAM MVC: Download and Upload images from SQL Server
In a previous article I have shown how it is possible to use efficient streaming semantics when Download and Upload images from SQL Server via ASP.Net MVC. In this article I will go over an alternative...
View ArticleHow to use columnstore indexes in SQL Server
Column oriented storage is the data storage of choice for data warehouse and business analysis applications. Column oriented storage allows for a high data compression rate and as such it can increase...
View ArticleHow to update a table with a columnstore index
In my previous article How to use columnstore indexes in SQL Server we’ve seen how to create a columnstore index on a table and how certain queries can significantly reduce the IO needed and thus...
View ArticleOnline non-NULL with values column add in SQL Server 11
Prior to SQL Server 11 when you add a new non-NULLable column with default values to an existing table a size-of data operation occurs: every row in the table is updated to add the default value of the...
View ArticleHow to Multicast messages with SQL Server Service Broker
Starting with SQL Server 11 the the SEND verb has a new syntax and accepts multiple dialogs handles to send on: SEND ON CONVERSATION [(]conversation_handle [,.. @conversation_handle_n][)] [ MESSAGE...
View ArticleOnline Index Operations for indexes containing LOB columns
SQL Server supports online index and table rebuild operations which allow for maintenance operations to occur w/o significant downtime. While a table is being rebuild, or a new index is being built on...
View ArticleSQL Server table columns under the hood
You probably can easily answer a question like ‘What columns does this table have?’. Whether you use the SSMS object explorer, or sp_help, or you query sys.column, the answer is fairly easy to find....
View ArticleUnderstanding how SQL Server executes a query
If you are a developer writing applications that use SQL Server and you are wondering what exactly happens when you ‘run’ a query from your application, I hope this article will help you write better...
View ArticleHow to analyse SQL Server performance
So you have this SQL Server database that your application uses and it somehow seems to be slow. How do you troubleshoot this problem? Where do you look? What do you measure? I hope this article will...
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