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
Tim Smith shares some ideas about how to handle and alert on irregular data coming from APIs when loading your database.
2016-09-14
3,377 reads
Power BI allows you to connect directly to the data just as if it were a “standard” connection, and modify and extend the data to support analytics. By using DirectQuery, you can build reports based on extremely large datasets where re-importing data not a practical solution. It also allows you to do data aggregations on the server. There are, of course, restrictions as well but it is nevertheless a worthwhile technique to use where appropriate. Adam Aspin explains all.
2016-09-13
4,392 reads
Arshad Ali takes a look at traditional analytics architecture, the challenges it faces, and how the newly introduced Real-time Operational Analytics feature overcomes those challenges.
2016-09-12
3,683 reads
Gerg Robidoux demonstrates a couple of methods for determining which version of SQL Server you're running, as well as what service pack or hotfix is installed.
2016-09-09
4,482 reads
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On SQL Server 2025, when I run this, what is returned?
SELECT EDIT_DISTANCE_SIMILARITY('SQL Server', 'MySQL') See possible answers