Writing aggregate queries is one of the most important tasks for anyone working with T-SQL. Determining the expressions required in the GROUP BY clause is not that difficult, but what do you do if you need to include different combinations of group by expressions in the same result set? Alfonso demonstrates how to use the GROUPING SETS operator to accomplish this task.
2017-12-18
4,860 reads
Vitor Montalvao explains how to work with the basic configuration settings for a SQL Azure database from the Microsoft Azure portal itself.
2017-12-15
4,054 reads
The General Data Protection Regulation (GDPR) will affect organisations in countries around the world, not just those in Europe. The GDPR regulates how personal data is stored, moved, handled, and destroyed. Not following the regulation will lead to dire consequences for your organisation. As a data professional or developer, you may have many questions and might be wondering how it will affect the way you will do your job. William Brewer answers common questions about the GDPR that you were too shy to ask.
2017-12-14
3,329 reads
Erik Darling partitions the Stack Overflow database, then uses sp_WhoIsActive's @get_locks = 1 parameter to demo locking.
2017-12-13
3,150 reads
Policy-Based Management, a feature of SQL Server, is a flexible tool that can help DBAs manage one or more SQL Server instances. It's used for monitoring and enforcing a standard set of policies for SQL Server throughout an organization. While there are many built-in conditions from which to choose, Dennes demonstrates how to set up a custom policy as well as a standard one. Viewing the policy status over many servers can be tedious, so he also explains how DBAs can evaluate the states of multiple servers with just one glance.
2017-12-12
2,640 reads
One of the most commonly requested Azure SQL Database features has been support for more granular control of server-level firewall settings. A recently announced public preview of Azure SQL Database and Data Warehouse VNET service endpoints and rules promises to address this limitation.
2017-12-11
2,346 reads
Have you ever wanted to know how many pages in your database have changed since the last full backup? If so, then you will be glad to hear that the SQL Server 2017 version of the DMV, sys.dm_db_file_spavce_usage, has a new column named modified_extent_page_count, which shows the number of pages that have changed since the last full backup.
2017-12-08
3,696 reads
Although it is easy to use SQL Server R Services to create R scripts that incorporate SQL Server data by passing in a T-SQL query as an argument when calling the sp_execute_external_script stored procedure, you are limited to that one query, unless you pass additional data directly between R and SQL Server via CSV files. It is simple to do, and opens up many additional opportunities for data analysis. Robert Sheldon explains how.
2017-12-07
3,542 reads
Power BI provides correlation plot visualization in the Power BI Visuals Gallery to create Correlation Plots for correlation analysis. In this post, Siddharth Mehta shows how to create a correlation plot in Power BI Desktop using a sample dataset of car performance.
2017-12-06
2,780 reads
Brent Ozar explains why DBAs should read this book about the future of database administration at scale.
2017-12-05
3,193 reads
Every Scooby-Doo mystery starts with a haunted house, a strange villain, and a trail...
By Steve Jones
Prompt AI released recently and I decided to try a few things with the...
By Kevin3NF
How should you respond when you get the dreaded Email/Slack/Text/DriveBy from someone yelling at...
i have sqlexpress on rds, is there any way i can get notifacation that...
Comments posted to this topic are about the item SQL Server, Heaps and Fragmentation
Comments posted to this topic are about the item Stairway to Azure SQL Hyperscale...
A table without a clustered index (heap) will NOT suffer from fragmentation during frequent updates or deletes. True or False?
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