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postgresql COUNT(DISTINCT …) very slow
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I found this thread on www.postgresql.org which discusses the same thing: link. One of the replies (by Jeff Janes) says that COUNT(DISTINCT()) sorts the table to do its work instead of using hash.
– Ankur
Dec ...
Sequelize.js: how to use migrations and sync
... sequelize db:migrate && sequelize db:seed:all && node bin/www",
"start": "sequelize db:migrate && sequelize db:seed:all && node bin/www"
},
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The only thing I need to do on production server is npm start. This command will run all migrations, apply all seeders ...
Node.js: Difference between req.query[] and req.params
....get('/hi/:param1', function(req,res){} );
and given this URL
http://www.google.com/hi/there?qs1=you&qs2=tube
You will have:
req.query
{
qs1: 'you',
qs2: 'tube'
}
req.params
{
param1: 'there'
}
Express req.params >>
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What's the shebang/hashbang (#!) in Facebook and new Twitter URLs for?
...JavaScript History API that was introduced alongside HTML5. For a URL like www.example.com/ajax.html#!key=value, Google will check the URL www.example.com/ajax.html?_escaped_fragment_=key=value to fetch a non-AJAX version of the contents.
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What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java
...this? The text of the page has some java interoperability remarks.
http://www.scala-lang.org/node/128
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Is there a way to force ASP.NET Web API to return plain text?
...straightforward media type formatter that support text mime types.
http://www.asp.net/web-api/overview/formats-and-model-binding/media-formatters
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How to detect the device orientation using CSS media queries?
...tion:landscape) { … }
The CSS definition of a media query is at http://www.w3.org/TR/css3-mediaqueries/#orientation
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Revert a range of commits in git
...revert -n B D
git commit -m "Revert commits B and D"
Reference: https://www.kernel.org/pub/software/scm/git/docs/git-revert.html
Thanks Honza Haering for the correction
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Accessing Session Using ASP.NET Web API
...s article on Authentication and Authorization in ASP.NET Web API - https://www.asp.net/web-api/overview/security/authentication-and-authorization-in-aspnet-web-api
Read Microsoft's article on avoiding Cross-Site Request Forgery hack attacks. (In short, check out the AntiForgery.Validate method) - ...
ASP.NET MVC: Is Controller created for every request?
... action on the controller to call, and parameters to pass to them.
http://www.asp.net/mvc/tutorials/asp-net-mvc-routing-overview-vb
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