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LINQ - Left Join, Group By, and Count
...from p in context.ParentTable
join c in context.ChildTable on p.ParentId equals c.ChildParentId into j1
from j2 in j1.DefaultIfEmpty()
group j2 by p.ParentId into grouped
select new { ParentId = grouped.Key, Count = grouped.Count(t=>t.ChildId != null) }
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Getting “A potentially dangerous Request.Path value was detected from the client (&)”
I've got a legacy code issue that requires that I support random urls as if they were requests for the home page. Some of the URLs have characters in them that generate the error "A potentially dangerous Request.Path value was detected from the client (&)" . The site is written with ASP.Net MVC...
What is causing ERROR: there is no unique constraint matching given keys for referenced table?
Below example table structure gives an ERROR: there is no unique constraint matching given keys for referenced table, and having stared at it for while now I can't figure out why this error arises in this situation.
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How to configure Sublime Text 2/3 to use direct Ctrl+Tab order and to create new tabs after the last
...rl+Tab, Ctrl+Shift+Tab or Ctrl+W the tab I get switched to is not the one just near the one I was on (as I would like to) but to some else. When I press Ctl+N the new tab is created right near the tab I am at while I always want it to be created at the end of the tabs list. How to configure it to ac...
Append text to input field
I need to append some text to an input field...
6 Answers
6
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How do you remove a Cookie in a Java Servlet
How do you remove a cookie in a Java servlet?
6 Answers
6
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nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_s
I'm in the process of setting up a new server. The http-Server of my choice is NGINX. I want to add the domain audi-freunde-einbeck.de as a virtual host. I already have 2 other domains in there and it works fine, but when I try to add the above mentioned domain and start the server it gives me Jo...
Sending a JSON to server and retrieving a JSON in return, without JQuery
...o send a JSON (which I can stringify) to the server and to retrieve the resulting JSON on the user side, without using JQuery.
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Is there a way to word-wrap long words in a div?
I know Internet Explorer has a word-wrap style, but I'd like to know if there is a cross-browser method of doing so to text in a div.
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mongodb count num of distinct values per field/key
Is there a query for calculating how many distinct values a field contains in DB.
5 Answers
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