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How to use count and group by at the same select statement

... by statement. Is there a way for this directly from sql? For example, having a table with users I want to select the different towns and the total number of users ...
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PostgreSQL Connection URL

... If you use Libpq binding for respective language, according to its documentation URI is formed as follows: postgresql://[user[:password]@][netloc][:port][/dbname][?param1=value1&...] Here are examples from same document postgresql:// p...
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How do you represent a JSON array of strings?

... I'll elaborate a bit more on ChrisR awesome answer and bring images from his awesome reference. A valid JSON always starts with either curly braces { or square brackets [, nothing else. { will start an object: { "key": value, "another key": value } Hint: although javascript acce...
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Callback of .animate() gets called twice jquery

Since I added some scrollTop -animation, some parts of my callback get called twice: 2 Answers ...
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Use a normal link to submit a form

I want to submit a form. But I am not going the basic way of using a input button with submit type but a a link. 7 Answe...
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How to get all groups that a user is a member of?

... Get-ADPrincipalGroupMembership will do this. Get-ADPrincipalGroupMembership username | select name name ---- Domain Users Domain Computers Workstation Admins Company Users Company Developers AutomatedProcessingTeam ...
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Strip whitespace from jsp output

...s there a switch I can flip on my web.xml? Is there a Tomcat specific setting? 9 Answers ...
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What is the session's “secret” option?

I don't know anything about cryptography. I'm wondering what the session secret is. 3 Answers ...
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Is there an “exists” function for jQuery?

How can I check the existence of an element in jQuery? 43 Answers 43 ...
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How to pass event as argument to an inline event handler in JavaScript?

... to pass the event object: <p id="p" onclick="doSomething(event)"> to get the clicked child element (should be used with event parameter: function doSomething(e) { e = e || window.event; var target = e.target || e.srcElement; console.log(target); } to pass th...