As we know, Azure functions support only C# and javascript languages to write code. Therefore, if we want to create SQL queries within our function application, what do we do to do this? Here’s the solution to use SQL cmd Utility! This Utility can be utilized within any of your applications that you’d like to perform to execute a SQL search.
Let’s explore how to use this tool at first
It is necessary to download the SQL cmd Utility, which is provided by Microsoft, in two versions, one for Windows machines and one for Linux. The Utility is compatible with every kind of computer, but it is only available in a function-based application written in the C# language. Below are the steps: [Note: I’m using Windows 10 and Visual Studio 2017 to illustrate this.[Note: I am using Visual Studio 2017 for this example.
Get the SQL cmd Utility here. If you are using Windows, you will be required to download the appropriate version compatible with your system regardless of whether it’s 32 bits or 64 bits. In my instance, I installed “SqlLocalDB.110.dll” for a computer compiled using 64 bits.
Create an app that functions as a function and add a reference to SqlLocalDB.110.dll in your solution, as shown in the following screenshot:
The next step is to set up these dlls using functions app settings to ensure we can utilize them in our parts. Right-click your “Function settings for the app” and then click on the view settings. This will display the config file of your app’s function, which is named azurefunction.json (if you’re not sure about the location of this file, look in the top left corner in Visual Studio, where you see two files in green color SQL local, and the other is an azure function that is the config file for your application).
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FAQs:
- What was the reason I used Conn, a string parameter? Conn in my code?
Good question! In the case of Azure functions, each variable is treated as strings, and you must cast them before using them. This is a limitation of Azure functions, but you can circumvent this limitation by applying this “using static” directive. Your class will contain only static methods, and you do not have to be concerned about casting. However, since we’re just beginning to learn about Azure Functions, I would advise against over-engineering things and concentrate on the basics first. Make it an opportunity to gain experience instead of stress due to how our code appears.
2. What’s the difference between putting parameters to the query string and giving them directly into the SQL Command class?
The primary distinction is that I’ve employed string concatenation to construct the SQL command statement that contains my query and parameters. This is fine if you execute locally, but it won’t work if you’re calling an Azure function remotely since it is impossible to find a way to pass string values via parameter binding within Azure Web Jobs.
Conclusion:
I hope that this article will aid you in starting by using Azure Functions. There are still some things to be aware of, such as method signatures and the method used to pass parameters with values in remote functions called from client applications. Still, it’s an excellent addition to the Microsoft Azure cloud, all without any programming effort!
