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How to use DateTime in a SqlFilter with .NET

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Have you been wondering how to use DateTime inside of SqlFilters, with your Topics/Subscriptions? Have you also noticed that this doesn't seem to work?

 var message = new BrokeredMessage();
message.Properties["datetime"] = DateTime.Now;

var sqlFilter = new SqlFilter("datetime > '2016-06-06'");

That's because you explicitly need to add the DateTime as a parameter, like so:

 var filter = new SqlFilter(" datetime >= @datetime");
filter.Parameters.Add("@datetime", DateTime.Parse("2016-06-06"));

In order to make this more searchable in the future, I have also added a corresponding StackOverflow question: https://stackoverflow.com/questions/37705333/azure-service-bus-using-datetime-in-topic-subscription-sqlfilter-in-net

Comments

  • Anonymous
    June 08, 2016
    Great info John, thank you.Do you think it would be good to have this kind of info at https://msdn.microsoft.com/library/azure/microsoft.servicebus.messaging.sqlfilter.sqlexpression.aspx as well?
    • Anonymous
      June 16, 2016
      Thanks for the note Sean! We added an example using dates to the MSDN page.
  • Anonymous
    July 05, 2016
    One more thing: If you have a single filter like that, it's ok. If you have multiple filters, the current limitation of parameters/subscriptions makes it almost impossible to maintain. Parameter values are not discoverable. Looking at a filter once it's created, one cannot not know what't the value that parameter represents. I've raised an issue about this. Should be somewhere on the backlog (hopefully) :)