One new feature that SQL Server 2008 offers is more reliable dependency information. SQL Server 2005 offered a DMV (dynamic management view) called sys.sql_dependencies. It is now replaced by a more reliable sys.sql_expression_dependencies. The following script will show all the procedures that reference a given table name, along with the columns the procedure references also. [...]
Archive of posts filed under the SQL Server 2008 category.
Using the Merge Statement to populate a historical table with Effective Dating
One of my favorite uses for the MERGE statement introduced in SQL Server 2008 is the updating of a historical table. With versions prior to 2008 this operation had to be performed in two separate statements. Merge helps us to streamline the process. The advantage to the database engine when using a Merge statement is [...]
Using the Merge Statement’s OUTPUT Clause to Match Inserted IDENTITY Fields with Source Table Fields
With this project I needed to insert data into table1 from table2 while simultaneously retrieving the identity field of table1, then insert that identity into table3 which mapped to table2 on a key that table1 did not have. The OUTPUT clause when used with the input statment would not facilitate this because it could not [...]
SQL Server Slow Performance
This post deals with a random hanging that sometimes happens with SQL Server 2005+. In order to troubleshoot SQL Server Slowness, go here. The introduction of the new SQL Server 2005 Query Optimization engine has brought great things (including statement-level caching and smarter execution plan generation). There is however a little more overhead with the [...]
