In earlier installments of this series we looked at T-SQL Performance optimizations along with different T-SQL practices, we can now turn our attention to the second part of this series which is index Tuning
Audits for technology groups can be time consuming and stress employees out. An article Steve Jones finds says an insurance company only needed 30 minutes to ace their audit.
How do you recover from corruption if your organization doesn't have a disaster recovery handbook? And how can you prevent the same corruption from recurring?
As a production Database Administrator, I do not want to give Developers direct access to the SQL Server Agent job log especially for servers in the DMZ. Another problem we have is that when there is a lot of log data for a job, the default job log doesn't contain the full log detail and that makes it harder to troubleshoot. Most of all, we are trying not to use a different code set for deployment based on the environment. Basically we want to use the same methods to deploy our jobs to Development, Test and Production.
Phil Factor on his renewed appreciation for the "customer-focused" culture of the Data Platform Group at Microsoft
There is likely still a lot of 32-bit software out there, even as the x86 platform appears to be dying away. Steve Jones notes that you'll likely be dealing with 32/64 bit issues in your career.
This articles shows a technique that generates and launches an SSIS package to update statistics in parallel.
The most critical task for all DBAs is to have a Backup and Recovery strategy that ensures, every day, that in the event of a disaster they can restore and recover any database, within acceptable limits for data loss and downtime. Even with all the required backups in place, it's easy to miss subtle failings in the overall plan that can, and eventually will, defeat your recovery plans.
Now that we've seen the basics of indexing, and taken a deeper dive into Nonclustered Indexes, this Level will focus on searching the table, which will, in turn, will lead us to a discussion of clustered indexes.
This Friday Steve Jones takes a break from serious technical discussions. With the Oscar nominees announced there were lots of films left out of the awards. Are there some of these you'd recommend?
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Comments posted to this topic are about the item Server-Level Table sizes
There is a table tmp_tab:
CREATE TABLE tmp_tab ( id int, val int );
INSERT INTO tmp_tab VALUES (1, 1), (2, NULL), (3, 3), (4, 4), (5, 5);You want to order the rows ids by the following expression:
ISNULL(val, id) + 1Which of the following queries produces the expected ordering and why? (Select all correct) See possible answers