There are times when you want some users to see part of a column value but not the whole thing, but you want other users to see the complete column value without any masking. The new SQL Server 2016 Dynamic Data Masking feature will allow you to define these different kinds of masking rules - Greg Larson explains.
2016-09-29
5,212 reads
DBCC CHECKDB is a built-in SQL Server command that allows you to check database integrity and consistency in one simple command, but running it on large databases can be a nightmare. In this article, Ahmad Yaseen explains how you can enhance the command to run faster in SQL Server 2016.
2016-09-28
3,423 reads
Desired State Configuration (DSC) allows you to automate the way that you manage configuration data for software services as well as the environment in which these services run. DSC uses a set of built-in and custom 'resources' as the building blocks for a configuration. If you have specific requirements you may need to create the relevant resource to make the configuration happen. Nicolas Prigent provides a practical guide to DSC resources.
2016-09-27
3,764 reads
Erin Stellato goes into detail about some practical use cases for a new DBCC command in SQL Server 2014 SP2 : DBCC CLONEDATABASE.
2016-09-26
3,488 reads
It’s been said that one of the drawbacks to normalization to the third form (3NF) is more cumbersome data extraction due to the greater number of tables. These require careful linking via JOIN clauses. Improper table joining can easily result in erroneous results or even in the dreaded Cartesian Product. In today’s article, Rob Gravelle explores how table joins are achieved in MySQL.
2016-09-23
3,720 reads
Rob Farley explains why AT TIME ZONE is his new favourite feature in SQL Server 2016, but also shows that it can make a mess of cardinality estimates.
2016-09-22
4,108 reads
The SQL Server Error Log is quite large and it's not always easy to view the contents with the Log File Viewer. Greg Robidoux presents an easy way to search and find errors using T-SQL.
2016-09-20
5,284 reads
In-memory OLTP was introduced in SQL Server 2014, but greatly improved in SQL Server 2016. If you have a heavily-used transaction-processing that is processing a lot of data, it is definitely worth considering the new 'In-Memory' features of SQL Server 2016. Grant Fritchey explains why.
2016-09-19
5,042 reads
To demonstrate that dynamic modules in PowerShell can be used to easily create objects with methods and properties, Phil Factor implements an expression analyser written in PowerShell, using a variation of Dijstra's Shunting Algorithm.
2016-09-16
5,804 reads
Row Level Security is one of many new features in SQL Server 2016. It provides a much easier, consistent, and maintainable solution for row-based security rules. In this blog post, Data Platform MVP Steve Jones introduces this new feature, and walks through how Redgate SQL Compare can safely and reliably handle RLS changes.
2016-09-15
3,121 reads
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
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Comments posted to this topic are about the item Cognitive Coverage
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