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Get top 1 row of each group

...nt to: maintain status in 2 places preserve status history ... As it stands, you preserve status history. If you want latest status in the parent table too (which is denormalisation) you'd need a trigger to maintain "status" in the parent. or drop this status history table. ...
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What are the differences between node.js and node?

...js. nodejs is what you want, however it is arguably better to have the command be called node for compatibility with scripts that use #!/usr/bin/env node. You can either just create a symlink in your path: sudo ln -s `which nodejs` /usr/local/bin/node Or you could install nvm and then use it to ins...
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Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize

... Compatibility Guide for JDK 8 says that in Java 8 the command line flag MaxPermSize has been removed. The reason is that the permanent generation was removed from the hotspot heap and was moved to native memory. So in order to remove this message edit MAVEN_OPTS Environment User Var...
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Android RatingBar change star colors [closed]

How can I change the star colors and size of the stars? 31 Answers 31 ...
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How do I use HTML as the view engine in Express?

I tried this simple change from the seed and created the corresponding .html files (e.g. index.html). 16 Answers ...
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When to use Preorder, Postorder, and Inorder Binary Search Tree Traversal strategies

...ven contemplated using anything but Inorder traversal (while I am aware of and know how easy it is to adapt a program to use pre/post-order traversal). ...
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Change templates in Xcode

...emplates you want to have customized variants of. Then change their names and the information in them. Finally, put them in the appropriate location in your account's Library/Application Support folder, specifically: File templates: ~/Library/Application Support/Developer/Shared/Xcode/File Templ...
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How to uninstall Python 2.7 on a Mac OS X 10.6.4?

...bash_profile . But I also want to remove all directories, files, symlinks, and entries that got installed by the Python 2.7 install package. I've got the install package from http://www.python.org/ . What directories/files/configuration file entries do I need to remove? Is there a list somewhere? ...
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How do I run two commands in one line in Windows CMD?

I want to run two commands in a Windows CMD console. 18 Answers 18 ...
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Are there any naming convention guidelines for REST APIs? [closed]

When creating REST APIs, are there any guidelines or defacto standards for naming conventions within the API (eg: URL endpoint path components, querystring parameters)? Are camel caps the norm, or underscores? others? ...