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

I have an sql select query that has a group by. I want to count all the records after the group 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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Pros and cons of using sbt vs maven in Scala project [closed]

Which build tool is the best for Scala? What are the pros and cons of each of them? How to I determine which one of them to use in a project? ...
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How to prevent blank xmlns attributes in output from .NET's XmlDocument?

When generating XML from XmlDocument in .NET, a blank xmlns attribute appears the first time an element without an associated namespace is inserted; how can this be prevented? ...
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Selectors in Objective-C?

First, I'm not sure I really understand what a selector is. From my understanding, it's the name of a method, and you can assign it to a class of type 'SEL' and then run methods such as respondToSelector to see if the receiver implements that method. Can someone offer up a better explanation? ...
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How to show android checkbox at right side?

By default android checkbox shows text at right side and checkbox at left I want to show checkbox at right side with text at left ...
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How can I replace text with CSS?

How can I replace text with CSS using a method like this: 21 Answers 21 ...
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How to delete a localStorage item when the browser window/tab is closed?

My Case: localStorage with key + value that should be deleted when browser is closed and not single tab. 19 Answers ...
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Catch all JavaScript errors and send them to server

I wondered if anyone had experience in handling JavaScript errors globally and send them from the client browser to a server. ...
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Bytecode features not available in the Java language

Are there currently (Java 6) things you can do in Java bytecode that you can't do from within the Java language? 9 Answers ...
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Database: To delete or not to delete records

I don't think I am the only person wondering about this. What do you usually practice about database behavior? Do you prefer to delete a record from the database physically? Or is it better to just flag the record with a "deleted" flag or a boolean column to denote the record is active or inactive? ...