Skip to main content

SQL Server 2012: Nice features for developers

I finally found some time to have a look at SQL Server 2012. There is still a lot to discover but I already want to highlight 2 great new features:
Sequence Objects

It’s a feature I already know from Oracle, but now SQL Server finally supports Sequence Objects too. A sequence object generates sequence of unique numeric values. It’s a nice alternative if you don’t want to use Identity fields or want to get a unique number up front.

Here is a sample that creates a sequence that starts with 1 and gets incremented by 1. The minimum value is 0 and maximum value is 100. If you go higher that 100 an error is thrown(if you don’t want this you can change this by specifying ‘cycle’ instead of  ‘no cycle’.

To increment the value we need to call the statement below:

Pagination

Another nice features that got added to SQL Server 2012 is the built-in support for pagination. Before I had to combine “ROW_NUMBER and “TOP” to get a subset of results. Now I can use  “OFFSET” and “FETCH’ commands to do pagination.

To skip the first 10 results and take the next 10 results from a Products table, I can write the following query:

Labels:

Popular posts from this blog

.NET 8–Keyed/Named Services

A feature that a lot of IoC container libraries support but that was missing in the default DI container provided by Microsoft is the support for Keyed or Named Services. This feature allows you to register the same type multiple times using different names, allowing you to resolve a specific instance based on the circumstances. Although there is some controversy if supporting this feature is a good idea or not, it certainly can be handy. To support this feature a new interface IKeyedServiceProvider got introduced in .NET 8 providing 2 new methods on our ServiceProvider instance: object? GetKeyedService(Type serviceType, object? serviceKey); object GetRequiredKeyedService(Type serviceType, object? serviceKey); To use it, we need to register our service using one of the new extension methods: Resolving the service can be done either through the FromKeyedServices attribute: or by injecting the IKeyedServiceProvider interface and calling the GetRequiredKeyedServic...
Read more

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.
Read more

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t...
Read more