Randy starts a multiple part series on tuning queries. We've asked Randy to really start from scratch and walk through the process. This week he takes a look at viewing query plans in Query Analyzer.
2019-11-11 (first published: 2003-08-19)
26,089 reads
In this article Randy Dyness shows you how to avoid temp tables whenever to maximize the performance of your queries.
2017-08-18 (first published: 2002-04-09)
69,775 reads
Building high performance applications with SQL Server can be a challenge if you do not understand how the query processor works and how the server uses indexes. SQL Server expert Randy Dyess brings a look at how bookmark lookups are used when satisfying a query and how this can impact the performance of your query.
2008-07-18 (first published: 2005-05-30)
38,910 reads
Did you know that you can obtain the execution plans for your SQL Server 2000 queries using Profiler? It is an interesting concept, especially when you need to troubleshoot the queries on a system that you did not develop and cannot obtain source code for. SQL Server guru andy Dyess brings us the technique you can use to find those queries and execution plans.
2005-04-18
16,764 reads
Understanding the different types of joins used by the optimizer will help developers and DBAs understand how the optimizer is routing their queries. Developers often create queries without knowing that it would only take a few tweaks to produce an execution plan that utilizes one optimizer join method over another. These small tweaks can have dramatic effects on the optimization of the query and the ultimate satisfaction of the query by the end-users.
2005-02-09
22,512 reads
Some good info on password changes in Yukon (SQL 2005). Based on the beta, but worth taking a look at.
2004-03-19
8,916 reads
Randy says that the biggest reason we have so many injection vulnerabilities is that all the asp books use inline sql for their examples! We STILL encounter developers who don't understand injection. Read and pass on to your dev team.
2004-02-24
15,776 reads
We've had a good run of jobs about job management lately, Randy sent us another one that looks at the job of job management and shows us how he tackled the problem.
2003-04-02
24,097 reads
This article explains how to use a simple batch file and script file to manage multiple databases on multiple servers.
2002-10-24
9,990 reads
This article briefly discusses SQL Server's data and procedure cache and shows you the common Transact-SQL statements/command and system tables that you can use to interact with the cache through Transact-SQL.
2002-08-15
14,206 reads
By Steve Jones
Superheroes and saints never make art. Only imperfect beings can make art because art...
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hi, i noticed the sqlhealth extended event is on by default , and it...
Using New-AzSqlInstanceServerTrustCertificate to import a certificate and get the message New-AzSqlInstanceServerTrustCertificate: Long running operation...
I am currently working with Sql Server 2022 and AdventureWorks database. First of all, let's set the "Read Committed Snapshot" to ON:
use master; go alter database AdventureWorks set read_committed_snapshot on with no_wait; goThen, from Session 1, I execute the following code:
--Session 1 use AdventureWorks; go create table ##t1 (id int, f1 varchar(10)); go insert into ##t1 values (1, 'A');From another session, called Session 2, I open a transaction and execute the following update:
--Session 2 use AdventureWorks; go begin tran; update ##t1 set f1 = 'B' where id = 1;Now, going back to Session 1, what happens if I execute this statement?
--Session 1 select f1 from ##t1 where id = 1;See possible answers