Storing An Image In SQL Server - sql

Question

I need to create a procedure in SQL server that takes a web URL of an image and converts it to VARBINARY, and after that: store in a column called "personqr_Image" in table "tblPersons".
I created a procedure "getPersonQrCode" that returns a URL of a unique QR code (450x450 image), and using that URL I need to convert it to VARBINARY data type in order to store it in my SQL DB.
Unfortunately I haven't really found a solution online, maybe because I am not very familiar with the subject.

Answer 1

You can't do this purely in TSQL, as it doesn't have any functions for browsing the web and handling http requests and responses. If you have to do this IN SQL Server, you'll need to write a CLR procedure.

Answer 2

Here is a CLR function that will allow you to submit HTTP requests
public class RestClient
{
[SqlFunction(DataAccess = DataAccessKind.Read)]
public static string Submit(string url, string data, string contentType, string
method = "POST",
string httpHeaderCredentials = "")
{
try
{
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls |
SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
var request = (HttpWebRequest) WebRequest.Create(url);
//Add header credentials if required
if (!string.IsNullOrEmpty(httpHeaderCredentials))
{
request.Headers.Add("Authorization: " + httpHeaderCredentials);
}
request.ContentType = contentType;
request.Method = method;
if (request.Method == "PATCH")
{
//http://stackoverflow.com/questions/31043195/rest-api-patch-request
request.ServicePoint.Expect100Continue = false;
}
if (method == "POST" || method == "PATCH")
{
using (var streamWriter = new StreamWriter(request.GetRequestStream()))
{
streamWriter.Write(data);
streamWriter.Flush();
streamWriter.Close();
}
}
var httpResponse = request.GetResponse();
using (var responseStream = httpResponse.GetResponseStream())
{
if (responseStream != null)
{
using (var reader = new StreamReader(responseStream))
{
return reader.ReadToEnd().Replace("\n", string.Empty);
}
}
}
}
catch (Exception ex)
{
if (SqlContext.Pipe != null)
{
SqlContext.Pipe.Send(ex.Message);
}
}
return "";
}