The Bit Bucket

Temp tables are visible within the scope where they are declared but also in sub-scopes. This means that you can declare a temp table in one stored procedure but access it in another stored procedure that is executed from within the first stored procedure.

There are two reasons that people do this. One reason is basically sloppy code, a bit like having all your variables global in a high level programming language. But the more appropriate reason is to avoid the overhead of moving large amounts of data around, and because we only have READONLY table valued parameters.

2012-01-05

We have a very common customer scenario where the customer decides to upgrade to a new version (in this case let’s say SQL Server 2012). They run upgrade advisor and note that there are a whole lot of problems. They think “Hey that’s way too much to deal with right now. I don’t have time”.

So they don’t deal with them. They upgrade the server to 2012 but leave their db_compat level at a lower level with the intention of dealing with the problems later.

2011-12-24

Well it’s been a while since I’ve posted up a new podcast. (I know, I know).

But I’ve just started a new series for SQL Server 2012. First out of the gate is Roger Doherty (Senior Program Manager in the SQL Server team) with an overview of all the key SQL Server 2012 pillars and enhancements.

You’ll find it here:

https://podcast.sqldownunder.com

Enjoy!

2011-12-21

Nice to see the increase in maximum database size on SQL Azure kicked up to 150GB.

In most enterprises I go into, there are a few databases that wouldn’t fit but now the vast majority of databases would fit in SQL Azure.

Also included in the November release are federations and an updated management portal.

More info here: http://msdn.microsoft.com/en-us/library/windowsazure/ff602419.aspx

2011-12-13

Over the years, I’ve seen several causes of this error in SQL Server Integration Services but today I came across another one.

You can get this error if you’ve used 3rd party components (particularly data sources) and the licensing for those components has expired.

Hope that helps someone sometime.

2011-12-13

When you first make a connection to the new LocalDB edition of SQL Server Express, the system files, etc. that are required for a new version are spun up. (The system files such as the master database files, etc. end up in

C:\\Users\\<username>\\AppData\\Local\\Microsoft\\Microsoft SQL Server Local DB\\Instances\\LocalDBApp1) 

That can take a while on a slower machine, so this means that the default connection timeout of 30 seconds (in most client libraries) could be exceeded.

2011-11-30

One of the things that I have been pestering the SQL team to do is to name their updates according to what is contained in them. For example, instead of just:

sqlncli.msi 

What I’d prefer is that the file was called something like:

SQLServerNativeClient2k8SP1CU3x64.msi

So I normally rename them as soon as I receive them, to avoid confusion in future. However, today I found that doing so caused me a problem. After renaming the file, and installing it, the installation failed with the error:

2011-11-26

It’s great to see that volume 2 of MVP Deep Dives is now available and will be distributed at the PASS summit next week. I’m really sad that I won’t be at the book signing next week but I’d encourage you all to get along, order a copy and have it signed.

A huge thanks has to go to Kalen Delaney for her management of this project and a big thanks to my fellow editors Louis Davidson, Brad McGehee, Paul Nielsen, Paul Randal, and Kimberly Tripp for their efforts. A special mention for Paul Nielsen whose ideas and spirit around volume 1 that have continued into this new volume.

2011-10-06

Part of the value in the ongoing evolution of the T-SQL language is that we are moving further and further towards being declarative rather than prescriptive ie: we are able to tell SQL Server what we want, rather than how to do it. Over time, that raises more and more possibilities for the optimizer to work with us to achieve a better outcome.

For example, note the following query against the AdventureWorksDW database:

2011-09-11

With SQL Server, there often seems to be an over-emphasis on the items that provide bullet points for the marketing brochure. Yet, small but useful changes to the product can make a more profound impact on DBAs/developers than the new items that are highlighted by those bullet points.

One of the things I loved about Reporting Services in SQL Server 2008 R2 is the amount of focus they provided on ease of use. In particular, the addition of data bars, lookup functions, pagination control, rendering targets in expressions, domain scope, etc. made a huge difference to anyone that really needs to build reports.

2011-09-11