Articles

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Predicates With Subqueries

The ALL, SOME and ANY predicates aren't much used in SQL Server, but they are there. You can use the Exists() predicate instead but the logic is more contorted and difficult to read at a glance. Set-oriented predicates can greatly simplify the answering of many real-life business questions, so it is worth getting familiar with them. Joe Celko explains.

2016-10-03

8,250 reads

External Article

SQL Server for Linux

Although SQL Server for Linux removes the concern that adopting SQL Server forces you to also adopt the Windows platform, it could also provide a useful alternative platform, and a more obvious alternative to Oracle. There are, however, several obvious concerns as to how such a product could ever achieve parity with the existing Windows-based product. Microsoft have made an interesting move with several ramifications, as Robert Sheldon explains.

2016-09-30

6,963 reads

External Article

PowerShell Desired State Configuration: DSC Resources

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

External Article

Querying Multiple MySQL Tables

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

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Using OPENJSON

By Steve Jones - SSC Editor

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Question of the Day

Using OPENJSON

I have some data in a table that looks like this:

BeerID BeerName    brewer               beerdescription
1      Becks       Interbrew            Beck's is a German-style pilsner beer 
2      Fat Tire    New Belgium          Toasty malt, gentle sweetness, flash of fresh hop bitterness.
3      Mac n Jacks Mac & Jack's Brewery This beer erupts with a floral, hoppy taste
4      Alaskan Amber Alaskan Brewing     Alaskan Brewing Amber Ale is an "alt" style beer
8      Kirin       Kirin Brewing         Kirin Ichiban is a Lager-type beer
If I run this, what is returned?
select t1.key
    from openjson((select t.* FROM Beer AS t for json path)) t1

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