Data mining introduction part 4: the Naïve Bayes algorithm
This chapter explains the Naïve Bayes algorithm. How does it works, what information is displayed.
Modeling the Earth
Microsoft Research has a variety of interesting projects underway, including one to try and model the Earth. Many of these involve lots of data in some way, and would be interesting projects to work on, according to Steve Jones.
Managing SQL Server Statistics
Accurate statistics about the data held in tables are used to provide the best execution strategy for SQL queries. but if the statistics don't accurately reflect the current contents of the table you'll get a poorly-performing query. How do you find out if statistics are correct, and what can you do if the automatic update of statistics isn't right for the way a table is used?
dbWarden - A Free SQL Server Monitoring Package
dbWarden is a comprehensive monitoring and alerting solution for SQL Server 2005 or newer. It features an emailed Health Report and includes email and text notifications with customizable metrics for alerts such as Blocking, Long Running Queries and SQL Jobs, CPU %, Log file and TempDB growth.
The DBA Office
The environment in which we work can have an affect on the way in which we work. Steve Jones asks today if you have a preference for your environment.
Comparing Multiple Rows Insert vs Single Row Insert with Three Data Load Methods
The performance of 'extract, transform, load' (ETL) processes for large quantities of data can always be improved by objective testing and experiment with alternative techniques. The cause of poor performance can sometimes be surprising.
Do you regularly run queries and scripts in SSMS?
SQL Server Management Studio is where most SQL scripts and queries are run, and although it does a decent job, it doesn't provide much help storing, sharing and managing the scripts particularly in the context of a team. Red Gate is considering building functionality into SSMS to help its users consume and share queries and scripts. Please help us by completing this short survey to help us define the requirements.
Brad's Sure Guide to SQL Server 2008
SQL Server 2008 has hundreds of new features and improvements for Production DBAs, Developer DBAs, and Business Intelligence specialists…in this book I focus on what I thought were the ten most important new features for Production DBAs.
Don't Accept Defaults
All software has default values, some of which might not suit your environment. This is especially true with regards to security settings.
Tracking Business Metrics
There can be more to managing a SQL Server instance than just examining the performance metrics. There are times when understanding how your system is performing for the application is important.
Blogs
Data Engineering Books Worth Having on Your Shelf (or your tablet)
Good documentation gets you started. Good books get you deep. After years of working...
SSMS Evaluation – future ready
By Vinay Thakur
In previous posts, we looked at the SQL Server engine. for us DBAs, the...
Claude.ai vs Claude API
By Arun Sirpal
You have used Claude. But which Claude? The Claude app (claude.ai, the desktop and...
Forums
SQL Server Showing Out of Space But Plenty of Drive Space
We have a SQL Server installed. We have a 500GB drive for the database....
Creating a JSON Document IV
Comments posted to this topic are about the item Creating a JSON Document IV
Restoring Azure Key Vault Keys and Validating SQL Server TDE Recovery: Level 7 of the Stairway to TDE
By VishnuGupthanSQLPowershellDBA
Comments posted to this topic are about the item Restoring Azure Key Vault Keys...
Question of the Day
Creating a JSON Document IV
I have this data in a table called dbo.NFLTeams
TeamID TeamName City YearEstablished ------ -------- ---- --------------- 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960 5 49ers San Francisco 1946 6 Broncos Denver 1960 7 Seahawks Seattle 1976 8 Patriots New England 1960If I run this code, how many rows are returned?
SELECT YearEstablished, json_objectagg(city : TeamName) FROM dbo.NFLTeams GROUP BY YearEstablished;See possible answers