Expiring Today—Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

otential performance differences between the following 3 SQL statements

Posted on 2011-02-24
2
Medium Priority
?
315 Views
Last Modified: 2012-05-11
Based on the listed assumptions, what are the potential performance differences between the following 3 SQL statements?  All statements are run on Server A.

>> select * from CustData..Cust c join CustData..Dept d on (c.DeptID = d.DeptID)

LinkServerA: Linked server definition, defined on Server A, that points back to itself

>> select * from CustData..Cust c join LinkServerA.CustData..Dept d on (c.DeptID = d.DeptID)

LinkServerB: Linked server definition, defined on Server A, that points to remote Server B

>> select * from CustData..Cust c join LinkServerB.CustData..Dept d on (c.DeptID = d.DeptID)
0
Comment
Question by:tesla764
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 15

Accepted Solution

by:
Aaron Shilo earned 2000 total points
ID: 34972081
hi
one thing i ran into is that Because linked server is using OS memory rather than the buffer pool and if there is not enough memory, your query performance will degrade.


--------------------------------------------------------------------------------
0
 

Author Closing Comment

by:tesla764
ID: 35140117
Thanks
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
What if you have to shut down the entire Citrix infrastructure for hardware maintenance, software upgrades or "the unknown"? I developed this plan for "the unknown" and hope that it helps you as well. This article explains how to properly shut down …
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
Via a live example, show how to set up a backup for SQL Server using a Maintenance Plan and how to schedule the job into SQL Server Agent.

719 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question