Inside the Optimizer: Constructing a Plan - Part 2
How does the query optimizer build an execution plan for your queries? Paul White shows is in part two of a four-part series exploring the internals of query optimization.
Webinar: Turn your backups into live databases with SQL Virtual Restore
Find out in this webinar how easy it is with Red Gate's SQL Virtual Restore to mount live, fully functional databases direct from backups – without performing a physical restore. Learn how you can use SQL Virtual Restore to save storage space and time across a wide range of database administration activities.
AdvanceTimePolicy and Point Event Streams In StreamInsight.
There are a number of ways to issues CTIs (Current Time Increments) into your StreamInsight streams but a quite useful way is to do it declaratively on your source factory like this
An Informal Look at Database Performance
A review on the basic steps to correct a poorly performing query
The DIS-Information Principle: A Splitting Headache
You can easily re-factor bad DML code, but if a database design is wrong, you can do little to rescue the problem, even with expert queries. So what constitutes 'wrong RDBMS design? What are these errors that continually crop up? How can you recognise them and fix them? Joe embarks on a new series of articles by identifying a series of bad practices based on the habit of 'splitting' that which shouldn't be split.
Early September Free Training from PASS VCs
Hope you got plenty of rest over your Labor Day holiday because the PASS Virtual Chapters have some great free training lined up for you.
Inside the Optimizer: Constructing a Plan - Part 1
Part one of a four-part series exploring the internals of query optimization from T-SQL guru, Paul White.
Talking To You Makes Me Smarter
There's a lot of value in the interactions that professionals have with each other. A guest editorial from Andy Warren talks about the benefits of meeting new people.
Extended Protection available in SQL Server 2008 R2
We use Internet Protocol Security (IPSec) within the trusted domains, but use the Negotiate Security Support Provider for our web applications. What other security methods can we employ with SQL Server?
4-4-5 Calendar Functions, Part 1
New author Cliff Corder has a SQL Server function to report on a 4-4-5 Calendar Accounting Year.
Blogs
Automatic Index Compaction
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
The Goldilocks problem – Materialized Views
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
Monday Monitor Tips: Virtual Machine Usage and Cost
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
How We Handled a Vendor Retry That Loaded Twice in Snowflake
Comments posted to this topic are about the item How We Handled a Vendor...
Cognitive Coverage
Comments posted to this topic are about the item Cognitive Coverage
Question of the Day
Getting the Average
I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers