What's "Actually" going on with that Seek?
Rob Farley digs deeper into seeks and actual rows read, demonstrating a case where you want a non-sargable expression in the WHERE clause.
2016-07-07
3,150 reads
Additional Articles
Introduction to the Azure SQL Database Advisor
One of the challenges associated with running your workloads in Azure SQL Database is the limited level of management oversight. Fortunately, there is an alternative approach that leverages the functionality incorporated into the recently introduced Azure SQL Database Advisor - Marcin Policht provides a brief overview.
2016-07-06
3,869 reads
3 Built-In Technologies for Centralizing SQL Server Administration
DBAs can be more effective in managing their workload by centralizing their procedures. There are several features of SQL server that can be harnessed to this end: PowerShell is only part of the solution: there is also Central Management Server, Master /Target Agent and the Remote Server Administration Tools. It's time to work out your objectives and pick the most suitable technologies to meet them.
2016-07-05
3,753 reads
Difference between SQL Server Unique Indexes and Unique Constraints
Uniqueness of values in specific columns can be enforced in a SQL Server table by creating a unique constraint or a unique index on those columns. In this article, Sergey Gigoyan looks at what the differences between the two are, and how SQL Server handles them both.
2016-07-04
4,824 reads
Mutating Table Error In Oracle: Why It Happens And What You Can Do About It
David Fitzjarrell takes a look at why the mutating table error is thrown, why it's not going to create data problems, and how to possibly fix it.
2016-07-01
3,541 reads
Using SSIS to Load Data Into Azure SQL Data Warehouse
It is a good time to get familiar with Azure SQL Data Warehouse. The first objective must be to get data into it. SSIS is a good way to start, and it’s certainly worth gaining confidence with the ETL processes supported by SSIS before setting off in other directions. Rob Sheldon provides a simple guide to getting up and running.
2016-06-30
3,793 reads
PowerShell Interview Questions for SQL Server DBAs
With PowerShell playing a more important role in administration of various types of servers, more SQL Server DBA candidates should have PowerShell knowledge and skills. In this article, Jeffrey Yao lists some common SQL Server DBA tasks that may be completed easier with PS than T-SQL.
2016-06-29
3,232 reads
SQL Server Sargability - Queries on an Indexed Table Sometimes have Slow Performance
The solution here was to slightly modify the slow queries, so the index could be fully used. We made the queries Search Argumentable, or "SARGABLE."
2016-06-28
4,654 reads
The Plain Simple Password Page Not So Simple Anymore
The requirements for the management of passwords have become far more complex over the past few years in response to the increasing sophistication of security breaches. Nowadays, you need to provide a range of features such as hashing, routine change of passwords, preventiion of repeat passwords, email confirmation, auto-generation of random passwords and password quality checks. Dino Esposito explains.
2016-06-27
3,535 reads
Persistent PowerShell: The PowerShell Profile
You can mould PowerShell to the way you want to work, with all the settings and modules that you require, by using the profiles. Profiles are PowerShell scripts that run at startup, and once you have understood where they are and when each is used, they have a whole range of uses that make using PowerShell a lot more convenient.
2016-06-24
5,348 reads
Blogs
Programmatic Tool Calling with the Claude SDK
Programmatic Tool Calling with the Claude SDK Every morning somebody on the team runs the...
A New Word: Mauerbauertraurigkeit
By Steve Jones
mauerbauertraurigkeit – n. inexplicable urge to push people away, even close friends whose company...
Methodology for dealing with bad data in production
By Brian Kelley
Pinal Dave wrote up his methodology for what to do when you discover bad...
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Question of the Day
BIT_COUNT() IV
In SQL Server 2025, I run this code:
select bit_count('A')
What is returned? See possible answers