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What's faster, SELECT DISTINCT or GROUP BY in MySQL?

... even a DISTINCT+ORDER BY might still be faster than a GROUP BY due to the extra hints for the optimizer as explained by SquareCog. – rustyx Jan 25 '15 at 15:03 1 ...
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Trying to login to RDP using AS3

...ite 0x0500 as little endian instead. You seemingly wrote the code with the extraneous dataBuffer with endian being big, so you know this technique. Still, it's better that you will just produce a proper dataBuffer in the function. I'm attempting to fix your code below basing on the connectoid code I...
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WCF vs ASP.NET Web API [closed]

...h WCF even for simple or simplest single web service it will bring all the extra baggage. For light weight simple service for ajax or dynamic calls always WebApi just solves the need. This neatly complements or helps in parallel to the ASP.net MVC. Check out the podcast : Hanselminutes Podcast 264 ...
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Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”

... For me an extra step was needed: going to the properties of said project->java build path->libraries->select "JRE System Library", click Edit and select "Workspace default JRE" – maayank ...
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How to programmatically disable page scrolling with jQuery

... If you use some extra css you CAN completely disable scrolling, see my answer for more details. – gitaarik Jun 25 '13 at 9:28 ...
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T-SQL: Deleting all duplicate rows but keeping one [duplicate]

...ed I know there are some duplicates in this table. I need to eliminate the extra rows from the perspective of the key columns. Some other columns may have slightly different data but I do not care about that. I still need to keep one of these rows however. SELECT DISTINCT won't work because it ope...
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For homebrew mysql installs, where's my.cnf?

...s-file=# Only read default options from the given file #. --defaults-extra-file=# Read this file after the global files are read. As you can see, there are also some options for bypassing the conf files, or specifying other files to read when you invoke mysql on the command line. ...
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How can I find unused images and CSS styles in a website? [closed]

... +1 for extra command-line geekiness! – ngeek Mar 2 '11 at 12:39 2 ...
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Difference between if () { } and if () : endif;

...n your code"? I think it is same for the traditional syntax {} as well. No extra echo is needed <?php if(...){ ?> ... <?php }else{ ?> ... <?php } ?>. What is the difference with <?php if(...): ?> ... <?php else: ?> ... <?php endif ?>? – Sithu...
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How to prevent form from submitting multiple times from client side?

...o linking the identifier to the users session and match that, as well, for extra security.) After the data processing delete the identifier. Of course, once in a while, you'd need to clean up the identifiers for which never any form data was submitted. But most probably your website already employs...