Category Archives: SQL

Schema visibility using xml_schema_namespace

One of the issues I’ve faced is the constant referencing and rereferencing of XML Schemas that are stored against a database.  the xml_schema_namespace dmv helps with this.  it takes 2 parameters.  the schema of the database object XML Schema and … Continue reading

Posted in SQL, XML, XML Schemas | Leave a comment

being silly with spatial data

Okay, a fun post with no educational value (sort of). My Adopted Twin, also a Database geek, has been under the weather recently so to cheer her up I have been playing with spatial data, under her orders to create … Continue reading

Posted in spatial data, SQL | 2 Comments

Schema validation using Reg Ex

One of the most powerful tools that XML in SQL Server brings to the table is Regular expresions. In XML Schemas Regular Expressions are an easy method to validate your data without having to bolt on complex CLR functions to … Continue reading

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XML .value simple syntax

There are several ways to get .value to extract an item of information from xml.  in the following article I will show some of the syntax and reasons why some methods are better than others. All the calls in this … Continue reading

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Reducing size of a nonclustered index with Filtering

SQL Server 2008 has a very nice new feature that enables a partial index to be created based on a specific where clause. I have recently used this as an solution checking a table that contained an isSent flag. by creating a … Continue reading

Posted in database performance, filtered indexes, non-clustered Indexes, SQL, Uncategorized | Leave a comment