One important tool in managing disk space is to make sure the system accurately reports space used by tables. DBCC UPDATEUSAGE will update the values returned by sp_spaceused.
The output of sp_spaceused “displays the number of rows, disk space reserved, and disk space used by a table, indexed view, or Service Broker queue in the current database, or displays the disk space reserved and used by the whole database.” One thing to note when reviewing the output is you may see the the reserved size is disportionately larger than the data and index space used. The reserved space should always be greater, but in one case I did see > 20 GB of difference. The space reported by system can get out of whack (technical term) from repeated use of TRUNCATE statements and frequent DDL statements.
Excellent article on DBCC UPDATEUSAGE by Armando Prato.
Google search for DBCC UPDATEUSAGE.
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Quick script to see active processes and to grab the query plan. It leverages some DMVs to get the query text and plan. Only can be used on SQL 2005 and above. It is a great and light wight way to see what is going on with the server and performance tuning.
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Good Explanantion and usage examples of the Except and Intersect Operators in SQL 2005 ( 2008).
From decipherinfosys
In SQL Server 2005, MSFT introduced two new operators in their T-SQL language: Except and Intersect. We had briefly touched upon these while discussing the MERGE command in Oracle – you can read more on that post here. EXCEPT returns the distinct data value from the left query (query on left side of the operand) which does not exist in the right query (query on the right side of the operand). INTERSECT returns data value which is common in both queries. In Oracle, the equivalent of the EXCEPT operator is MINUS and INTERSECT is same as INTERSECT. In SQL 2005, using EXCEPT and INTERSECT, one can also simulate the MERGE command in Oracle (see the blog post that is mentioned above).
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Using My Favorite Tech Service –http://www.Google.Com.
I Found this Posting for a Proper case T-Sql User Defined Function on Jeff’s SQL Server Blog — Go to the post as it has an port to MySQL and a couple of other ‘ADVANCED’ examples in the comments.
From the original Blog :
I posted this one a long time ago and needed to use it today, so I thought I’d post it up here as well in case anyone finds it useful. This simply attempts to capitalize the first letter of each word for the string passed in. Use it to help clean up some pre-existing data, but don’t use it as a way of presenting your data that is stored improperly since it isn’t exact.�
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