-->
SQL Clone
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 

SQLStudies

My name is Kenneth Fisher and I am Senior DBA for a large (multi-national) insurance company. I have been working with databases for over 20 years starting with Clarion and Foxpro. I’ve been working with SQL Server for 12 years but have only really started “studying” the subject for the last 3. I don’t have any real "specialities" but I enjoy trouble shooting and teaching. Thus far I’ve earned by MCITP Database Administrator 2008, MCTS Database Administrator 2005, and MCTS Database Developer 2008. I’m currently studying for my MCITP Database Developer 2008 and should start in on the 2012 exams next year. My blog is at www.sqlstudies.com.

Running multiple queries at the same time.

I read an interesting question today. Someone wanted to be able to run the same stored procedure multiple times, at the same time, but with different parameters each time. One way to do it would be to open multiple query windows, and run them all as close to at… Read more

2 comments, 136 reads

Posted in SQLStudies on 24 May 2017

What’s in a partition?

In my last post on partitioning I used the $Partition command in passing. I’ve been thinking it deserves a bit more attention.

So what does it do? Per BOL

Returns the partition number into which a set of partitioning column values would be mapped for any specified partition function in…

Read more

0 comments, 85 reads

Posted in SQLStudies on 22 May 2017

T-SQL FizzBuzz

I was looking around for something to write about this evening and came across one of Russ Thomas’ (b/t) old monthly challenges (Feb 2016).

The challenge is two-fold. A FizzBuzz problem is a common programming interview challenge that asks a coder to print the numbers from…

Read more

14 comments, 2,154 reads

Posted in SQLStudies on 17 May 2017

Why shouldn’t I shrink my database log file?

TL;DR: It’s pretty pointless and can cause performance issues.

Let’s start by asking why you might want to shrink your log.

It’s too big
I find that people who say this frequently don’t have a firm idea of what is too big or even why it might be as big… Read more

0 comments, 134 reads

Posted in SQLStudies on 15 May 2017

Dynamic SQL and the joys of QUOTENAME

I’m a big fan of dynamic SQL. In the past I’ve written a How to, a Best Practices and even a Generic Dynamic SP although that last one was a bit so so in my opinion. Depending on what type of dynamic code you are writing QUOTENAME will be… Read more

5 comments, 149 reads

Posted in SQLStudies on 11 May 2017

Continuous Integration

It’s T-SQL Tuesday again! This month we are being hosted by James Anderson (b/t). Thanks James! He has asked us to talk about Shipping Database Changes. I actually have some experience with an aspect of this at a previous company and I thought this would… Read more

0 comments, 142 reads

Posted in SQLStudies on 9 May 2017

Partitioning on a nullable column


tl;dr; If you are SWITCHing data into a table and the partitioning column is nullable you will need to add AND ColName IS NOT NULL to the constraint of the table that holds the data you are SWITCHing in.


Partitioning is a really handy, if rather complex tool. It can… Read more

3 comments, 665 reads

Posted in SQLStudies on 3 May 2017

Simple Security Report

Quite a while ago I created a couple of little security scripts to help me out with permissions research. Over time they grew into the procedures sp_dbpermissions and sp_srvpermissions. I recently updated them to v 6.0 and one of the main reasons was so I could add an output Read more

2 comments, 1,654 reads

Posted in SQLStudies on 1 May 2017

Why is a Windows authenticated login more secure than a SQL authenticated one?

I had this question come up at work the other day and while I knew it was true I wasn’t as sure about why as I’d like. The person I was working with wanted a real answer, not just Because I say so, so off to the internet I… Read more

8 comments, 2,478 reads

Posted in SQLStudies on 26 April 2017

SSMS Tips: Copy Full Path

When you right click on a tab you’ll see a number of different options. You can set up new horizontal or vertical tab groups, pin tabs, close tabs etc. But in this particular case take a look at these options.

  • Copy Full Path
  • Open Containing Folder

 
They… Read more

0 comments, 112 reads

Posted in SQLStudies on 24 April 2017

When should I add an index?

We all know indexes are good and I’m hoping everyone knows you can have too many indexes. That means we should be careful when adding new indexes right? So when should we add a new index?

Here are my general rules of thumb, although of course, you should always… Read more

7 comments, 2,070 reads

Posted in SQLStudies on 19 April 2017

What is the “cost” in Cost Threshold for Parallelism?

tl;dr; While at one point the cost of a query was an estimated time to run in seconds, today it’s just an estimated number used to give an idea of scale.

Cost Threshold for Parallelism has come up several times recently. Just so far this year I’ve found the following… Read more

2 comments, 183 reads

Posted in SQLStudies on 17 April 2017

No space queries

You know, sometimes you get a silly idea in your head and you just HAVE to try it out. The idea? Can I write a query without any white space? No spaces, no carriage returns etc. As it happens, yes. Yes I can.

SELECT*FROM[Person].[Person]WHERE[LastName]='Duffy';

You’ll notice I had to use… Read more

2 comments, 153 reads

Posted in SQLStudies on 13 April 2017

The more things change, the more they stay the same

Koen Verbeeck (b/t) is hosting T-SQL Tuesday this month and our topic is The times they are a-changing. In other words How does the cloud impact you and your job?

Well, to discuss how I feel about the cloud I have to go back a… Read more

2 comments, 240 reads

Posted in SQLStudies on 11 April 2017

How do I change the increment of an identity column?

Wellll .. technically there is no native way to do it. I even went through my notes on identity columns. No luck.

So how do we do it then? Well, believe it or not, there is a way. The other day Adam Machanic (b/t) pointed out… Read more

1 comments, 159 reads

Posted in SQLStudies on 5 April 2017

Hiding tables in SSMS Object Explorer

Extended Properties

Sometimes you find out the strangest things about SQL Server. I’ve written about extended properties before but had no idea they actually did anything beyond documentation. Then the other day I was reading a forum entry (no clue why) and saw a really interesting answer to the question.… Read more

0 comments, 152 reads

Posted in SQLStudies on 3 April 2017

Increasing and decreasing the performance level of your Azure SQL Database

One of the big benefits of Azure, and in fact any of the cloud offerings I’ve seen, is the ability to increase and decrease your capacity as needed. This is easy enough with Azure SQL Databases.

  1. In the Overview blade you can see current pricing tier.
  2. Under settings, just below…

Read more

0 comments, 150 reads

Posted in SQLStudies on 29 March 2017

sp_SrvPermissions & sp_DBPermissions V6.0 Finally!

It’s been almost 3 years since I updated these SPs! I can’t believe so much time has gone by! Well, I’m sure all of you have been holding your collective breath but I finally have some new updates. I’m particularly excited about the @DropTempTables and @Output options.

Just as a… Read more

4 comments, 171 reads

Posted in SQLStudies on 27 March 2017

Creating a list of random numbers

I was working on a blog post this weekend that required a list of random numbers. Now, this isn’t exactly an uncommon task, but it’s not as easy as it would seem. The random number function RAND() has a few inherent flaws. And from what I can remember the random… Read more

1 comments, 1,681 reads

Posted in SQLStudies on 22 March 2017

The parts of an object’s name

Any object within a database in SQL Server has what is called a four part name. Which rather implies four pieces right? Simple enough

Server.Database.Schema.ObjectName

And you can find the lists of each of those pieces in

 
The breakdown is nice but how about usage?… Read more

0 comments, 137 reads

Posted in SQLStudies on 20 March 2017

Older posts