For those people who seek seeks, here’s a “Pro Tip”. Suppose you have a query that involves a Scan. It can be a Clustered Index Scan or an Index Scan, it really doesn’t matter. If it’s a Table Scan, then you have a Heap in play, and this tip doesn’t apply. I’m looking for the … Continue reading Turning a Scan into a Seek With A Pointless Predicate
Some people have missed the point about my last post, called Covering, Schmuvvering. If you haven’t read it, then do so. Have a think about what’s going on, and why the Covering Index really isn’t that good, and then come back here and see if you’ve understood it right. My point is that often in … Continue reading Covering Index because it’s Covering up the truth?
Exciting times for LobsterPot – Martin & Heidi joining the team, a new website (lobsterpot.com.au), and a Melbourne presence! In March, Martin Cairney joined the team. Martin is a long-time member of the local Adelaide SQL Server community, and has been a friend of mine for some years now. He has spoken at the Adelaide … Continue reading New hires, new site, new location
If you haven’t been caught by a client (or even yourself) installing SQL 2008 R2 Evaluation Edition and then letting it expire, you might not realise the pain that this causes. To say it’s frustrating is a serious understatement. Fellow SQL MVP and SQLBlog blogger Aaron Bertrand (@aaronbertrand) has an excellent post on the matter, … Continue reading PowerShell script to help uninstall SQL Server 2008 R2 Evaluation Edition
Take a look at this query plan. Yes, that arrow indicates a single row. This is an Index Seek, returning a single row. And yet it’s rubbish. That’s right – it’s rubbish! In fact, I had to provide a hint for it to use this index. A table scan would’ve been better, and this is … Continue reading Covering, schmuvvering – when a covering index is actually rubbish
I’m not going to ask you to vote for the abstracts that I submitted for the PASS Summit. I’m not even going to mention the abstracts that Roger and Ashley submitted. I figure if you’re reading this, you may have already read the post I wrote about them, back before SQLPASS had said that there’d … Continue reading New PASS Summit speakers that deserve votes
This T-SQL Tuesday is on the topic of CTEs, and is hosted by Bob Pusateri (@SQLBob). For a bunch more posts on the topic, follow the link to his Invitation Post, and you’ll see a pile of them, all about CTEs. If you’re reading this and it’s still May 10th 2011 (GMT), then why not … Continue reading CTEs – query-scoped views
My guys are great! When PASS started accepting abstract submissions for their Summit (in October this year), some of the LobsterPot employees immediately started looking into ideas for talks they could do. We rate communication as one of our key values at LobsterPot, and all my staff are keen presenters. Roger Noble was … Continue reading LobsterPot submissions for SQLPASS