Transact-SQL in SQL Server 2000 has some interesting features, many of which most DBAs will never use. While many DBAs are famliar with the basic aggregate functions, there are a few that are advanced and not well understood. The ROLLUP and COMPUTE operators are two of these and David Poole takes a look at how these work and a practical application for them.
The staff at SQLServerCentral.com really appreciates your support and contributions to the community. We are always looking to improve things here and we have made a couple changes to the way our email system works.
Andrew Zanevsky shares his trace-scrubbing procedures that make it easy for you to handle large trace files and aggregate transactions by type–even when captured T-SQL code has variations.
SQL Server Profiler is a veritable treasure trove when it comes to helping DBAs optimize their T-SQL code. But, the surfeit of riches (I'm reminded of the Arabian Nights tale of Aladdin) can be overwhelming. I recently had one of those "sinking" feelings when I first tried to make sense of the enormous amount of data collected by traces on a client's servers. At this particular client, the online transactions processing system executes more than 4 million database transactions per hour. That means that even a 30-minute trace that captures "SQL Batch Completed" events results in a table with 2 million rows. Of course, it's simply impractical to process so many records without some automation, and even selecting the longest or most expensive transactions doesn't necessarily help in identifying bottlenecks. After all, short transactions can be the culprits of poor performance when executed thousands of times per minute.
The Northern Virginia SQL Server Users group serves the Maryland and Virginia areas around Washinton DC. The group is being restarted by Brian Moran and Jeremy Kadlec. If you're in the area, please read about this announcement and give them your support.
Many thanks from Andy, Brian, and Steve to everyone for their participation and efforts in building the best SQL Server site and the best community on the Internet. In appreciation of their efforts, we've given away a few gifts to some random members.
Trey Johnson, a PASS board member and a senior business intelligence consultant, is doing a webcast on Tuesday. Join him for a great talk getting a business intelligence system up and successful in your environment.
Ken Henderson explains how to use PSSDiag, a diagnostics collection tool for SQL Server. PSSDiag is one of several Microsoft Product Support Services tools recently released to the Web that are now available for personal use. (26 printed pages)
Transactional replication is a type of replication provided by SQL Server 2000 that allows data modifications to be propagated incrementally between servers in a distributed environment.
This article contains information about the bugs that are fixed by Microsoft SQL Server 2000 Service Pack 4 Beta. (SP4).
If you are running Microsoft SQL Server databases to support critical enterprise applications, you are part of a growing trend.
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I have a database, DNRTest, that has a number of tables and other objects in it. The other day, I was trying to mock up a test and ran this code on the same server:
-- run yesterday CREATE DATABASE DNRTest2 GO USE DNRTest2 GO CREATE TABLE NewTable (id INT) GOToday, I realize that I need a copy of DNRTest for another mockup, and I run this:
-- run today USE Master BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak' GO RESTORE DATABASE DNRTest2 FROM DISK = 'dnrtest.bak' WITH REPLACEWhat happens? See possible answers