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What are the most common SQL anti-patterns? [closed]

All of us who work with relational databases have learned (or are learning) that SQL is different. Eliciting the desired results, and doing so efficiently, involves a tedious process partly characterized by learning unfamiliar paradigms, and finding out that some of our most familiar programming p...
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What's the advantage of a Java enum versus a class with public static final fields?

...ing to work more in Java. I expected to learn that enums in Java were basically equivalent to those in C# but apparently this is not the case. Initially I was excited to learn that Java enums could contain multiple pieces of data which seems very advantageous ( http://docs.oracle.com/javase/tutorial...
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Significant new inventions in computing since 1980

... +1 for the most obvious but also the most easily forgotten because we all take it for granted :) – PolyThinker Jan 11 '09 at 15:22 20 ...
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How do you connect to multiple MySQL databases on a single webpage?

I have information spread out across a few databases and want to put all the information onto one webpage using PHP. I was wondering how I can connect to multiple databases on a single PHP webpage. ...
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How may I reference the script tag that loaded the currently-executing script?

...synchronous scripts (defer & async) Works with scripts inserted dynamically Problems Will not work in older browsers and IE. Does not work with modules <script type="module"> 2. Select script by id Giving the script an id attribute will let you easily select it by id from within usi...
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__init__ for unittest.TestCase

... +1 I'd initialise the base class before calling any object method though. – Joachim Isaksson Jun 27 '13 at 21:25 ...
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Phase • Animations made easy! - Extensions - Kodular Community

...l arrangement containing a complex group of components, Phase has got them all covered! Blocks Phase features a lot of 15 primary blocks. Most of these blocks are self-explanatory, but in case you need to learn more, you can hover over them in the blocks editor to see their documentation. Events...
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How to debug Lock wait timeout exceeded on MySQL?

In my production error logs I occasionally see: 11 Answers 11 ...
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What is the HTML tabindex attribute?

... to set the order but just make your element focusable use tabindex="0" on all such elements: <div tabindex="0"></div> Also, if you don't want it to be focusable via the tab key then use tabindex="-1". For example, the below link will not be focused while using tab keys to traverse. ...
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Error on renaming database in SQL Server 2008 R2

... is WITH ROLLBACK IMMEDIATE necessary. If I don't use it at all, will it cause problems? – user13892 Sep 6 '19 at 17:53 1 ...