This article shows you how to identify SQL Server performance problems and explains how the SERIALIZABLE transaction isolation level effected the performance of an OLTP application.
2003-05-22
1,874 reads
Joe discusses why he prefers command line tools over GUI, then launches into a how-to about querying sysperfinfo to resolve performance issues. Couple nice sample queries included!
2006-04-21 (first published: 2003-05-14)
32,864 reads
We've had a lot of coverage of dynamic sql (including another great one from Robert Marda later this week) but this one is a little different. Done in a question/answer format, Andy tries to explain to junior developers why dynamic sql is to be avoided, how to do so, what to do when you can't.
2005-08-26 (first published: 2003-04-23)
48,501 reads
We've all seen the numbers published about how well very db vendors do on the TPC tests - have you ever visited the site that sponsors the tests? Or looked to see what hardware and software configuration was used to achieve the score? Lots of good information on this site!
2003-04-10
825 reads
Quite a while back Andy wrote an article about why not using primary keys and clustered indexes was a worst practice. Chris weighs in this week with a great article that gives some more in depth info on clustered indexes and why he thinks they should be used on every table.
2003-03-30
18,801 reads
This white paper discusses the basics of indexes, such as density and selectivity, effects of many versus few indexes, long versus short keys, covering indexes, and how the SQL Server optimizer chooses indexes
2003-03-14
2,224 reads
In this series by Quest Software's Kevin Kline, he shows you some tips to performance tuning T-SQL. This was contributed by Quest from their recent webcast. This white paper discusses various T-SQL discovery, optimization and tuning techniques using the SET and DBCC commands.
2003-03-06
2,669 reads
Disk space is getting cheaper everyday. Why should you worry about the amount of space your data is consuming? This article by Neil Boyle presents some great reasons why you should be concerned.
2003-02-21
10,059 reads
In this article, James Travis covers a common performance topic of prefixing stored procedures sp_. Does it really slow down performance?
2002-11-14
7,102 reads
In this article new columnist Christoffer Hedgate offers his advice on what performs better, COUNT(*) or COUNT(column).
2002-09-23
17,583 reads
By Vinay Thakur
Continuing from Day 3 where we covered LLM models open/closed and their parameters, Today...
By Steve Jones
One of the nice things about Flyway Desktop is that it helps you manage...
By HeyMo0sh
Microsoft Fabric (not to be confused with the more general term “fabric” in DevOps)...
I'm fairly certain I know the answer to this from digging into it yesterday,...
Hi Team, I am trying to refresh the Azure Synapse Dedicated pool from production...
hi everyone I am not sure how to write the query that will produce...
I have some data in a table:
CREATE TABLE #test_data
(
id INT PRIMARY KEY,
name VARCHAR(100),
birth_date DATE
);
-- Step 2: Insert rows
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT *
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t; See possible answers