Comments for JimMcLeod.Net

Comment on The Potential Dangers of the Read Committed Snapshot Isolation Level by Chef Zoff

Chef Zoff — Tue, 09 Mar 2010 16:20:17 +0000

I must say that the example is not the best, but also I have to recognize that it is a true real life example of how bad people write queries. Obviously that we can write better, more consistent and efficient code ways, but the ugly true is that you will find always code like the example, how many developers knows the SQL hints? I think that the example provides maybe one of the most common and lame scenario that we can fine.

Comment on The Potential Dangers of the Read Committed Snapshot Isolation Level by Lions and Tigers and Deadlocks OMY! - rosslotharius.com

Lions and Tigers and Deadlocks OMY! - rosslotharius.com — Mon, 08 Mar 2010 16:30:08 +0000

[...] There are known concerns with Read Committed Snapshot that mainly exist in older applications that were developed without this isolation level in mind. For a more detailed description, I recommend checking out this blog post here. [...]

Comment on Don’t Feed Dogs Sultanas! by sue small

sue small — Mon, 22 Feb 2010 15:12:02 +0000

My dog has just stolen a whole six pack of hot cross buns. I have just phoned the vet to check if I need to take him in…..they are checking the toxin chart.

Comment on Applications using Hashing with SQL Server 2005/2008 by Jim

Jim — Wed, 13 Jan 2010 10:52:19 +0000

Hi Suranga,

Unfortunately, Hashbytes() only gives you two choices - a 16 character hash (128 bit), or a 20 character hash (160 bit). You may be able to find a different hashing algorithm on the Internet that only uses 10 bytes, or you can use a 128 bit algorithm and simply ignore the extra 6 bytes. Regardless of whether you use a different algorithm or trim a longer one down, you are more likely to encounter a hash collision, simply due to the fewer number of combinations that can be made. In practice, however, you may never encounter a collision, but you should have some way of resolving collisions.

Comment on Applications using Hashing with SQL Server 2005/2008 by Suranga

Suranga — Wed, 13 Jan 2010 08:08:11 +0000

Sir I want to know above hash value length,How to limit

For Ex;
Always keep the hashvalue with 10 characters

Comment on Don’t Feed Dogs Sultanas! by Jill

Jill — Fri, 18 Dec 2009 07:30:11 +0000

My dogs shared nearly a kilo of dried mixed fruit last night after I left it on the bench when I went shopping. After conducting an internet search I decided to take them to the emergency vet. They were given an emetic and both bought up large quantities of the fruit. Interesting that the dog suspected of raiding the packet was not the dog that had eaten the most.
The vet thought that it all came up and they are not suffering any effects today never less I will be keeping a close eye on them.
Your experience makes me shudder as to what could have occurred.

I would like to reiterate your sentiments get them to the vet as soon as possible after ingesting dried fruit. The vet said that only 60gms of raisins could do them damage.

Comment on Oops, didn’t mean to run the entire script… by Jim

Jim — Wed, 09 Dec 2009 12:20:09 +0000

Thanks, Emil - that’s a great idea. You could always put a WAITFOR DELAY ‘00:00:01′ in the loop to slow down the impact of the print statement.

Comment on Oops, didn’t mean to run the entire script… by Emil Fridriksson - Valar

Emil Fridriksson - Valar — Wed, 09 Dec 2009 04:23:24 +0000

I use this. Infinite loop, Uses a tiny little bit of server resources, but you’ll notice and stop the execution asap anyway and you don’t have to sacrifice any features.

– Security code
select ‘SAFETY SWTICH’
while 1=1 print ‘SAFETY SWTICH’
—————–

Comment on Oops, didn’t mean to run the entire script… by Ian McLeod

Ian McLeod — Tue, 17 Nov 2009 13:36:24 +0000

Hi Jim.

Is there a possibility that you can rollback a transaction/whole script when an error occurs while using SQLCMD?

Comment on Welcome, Dashiell! by Deepak

Deepak — Wed, 07 Oct 2009 05:31:19 +0000

Hello Jim,

Congratulations for becoming a father..Hope mom and son are doing good. God bless you all..

- Deepak