If you have a server that has more than one CPU core, you may experience high values of CXPACKET wait types. This is typically due to queries that run in parallel and the real issue is to understand how different versions of a query can impact CXPACKET waits. In this tip we examine how changing a query can impact CXPACKET waits.
2010-07-13
4,058 reads
In the concluding part of the Physical Operators series we look at the Hash operator.
2010-07-12
3,790 reads
One of the most integral components and critical success factors of any enterprise data warehousing initiative is the Solutions Architecture document, a high-level conceptual model of a data warehousing solution. Learn why this collaborative effort that addresses the needs of all major stakeholders, including both the business units and Information Technology (IT), is essential.
2010-07-09
2,224 reads
You can create a database under the assumption that SQL looks after all the problems of concurrency. It will probably work fine under test conditions: then, in the production environment, it starts losing data in subtle ways that defy repetition. It is every Database Developer's nightmare. In an excerpt from his acclaimed book, Alex Kuznetsov explains why it happens, and how you can avoid such problems.
2010-07-09
3,657 reads
In this part of NULL Defense series, we will discuss how to create NULL Defense in Script Transformation.
2010-07-08
3,480 reads
The staging area tends to be one of the more overlooked components of a data warehouse architecture, and yet it is an integral part of the ETL component design. Learn why it is best to design the staging layer right the first time, enabling support of various ETL processes and related methodology, recoverability and scalability.
2010-07-07
6,197 reads
How is it possible to pass multiple parameters to a SQL Server 2005 CLR aggregate?
2010-07-06
2,370 reads
Part II of the Physical Joins series looks at the Merge operator.
2010-07-05
4,112 reads
Geospatial Visualization is one of the key new features of SQL Server 2008 R2 Reporting Services. This step-by-step tutorial demonstrates the creation of a Map Report.
2010-07-02
3,764 reads
Customer interactions create a wealth of timely data that marketing departments are eager to exploit. The customer status fact table provides a central switchboard for using this fast-moving data.
2010-07-01
2,416 reads
By Steve Jones
It’s Prime Day. A few of my recommendations, since I want to do some...
With Fabric Mirroring, Microsoft is promoting a nice and appealing story for operational reporting...
If you’ve been watching AI roll through the data community and thinking, “this seems...
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
Comments posted to this topic are about the item Concurrency and Baseline Control: Level...
Comments posted to this topic are about the item Spending Time in the Office
I have this code on SQL Server 2022. What happens when it runs all at once?
DROP TABLE IF EXISTS dbo.Commission GO CREATE TABLE dbo.Commission (id INT NOT NULL IDENTITY(1,1) CONSTRAINT CommissionPK PRIMARY KEY , salesperson VARCHAR(20) , commission VARCHAR(20) ) GO INSERT dbo.Commission ( salesperson, commission) VALUES ( 'Brian', 12 ), ( 'Brian', 'None' ) GOSee possible answers