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MySQL - why not index every field?

...k about index updates were one update trigger all indexes update this is a select all unordered equivalent in time from this I conclude that you have in this scenario that if you will loose this time is preferable to lose it in a select nor an update because if you will select a field that is not i...
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Case conventions on element names?

...inent examples: <a>1</a><b>1</b> <xsl:value-of select="a+b"/> outputs 2, as expected <a>1</a><b>1</b> <xsl:value-of select="a-b"/> DOES NOT ERROR, BUT OUTPUTS NOTHING AT ALL In the above code, you must put at least one space before a su...
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Adding options to select with javascript

I want this javascript to create options from 12 to 100 in a select with id="mainSelect", because I do not want to create all of the option tags manually. Can you give me some pointers? Thanks ...
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How to load assemblies in PowerShell?

...me; These should also work: Add-Type -AssemblyName $TypeName -PassThru | Select-Object -ExpandProperty Assembly | Select-Object -ExpandProperty FullName -Unique If I want my script to always use a specific version of a .dll but I can't be certain of where it's installed, how do I determine what ...
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IntelliJ IDEA JDK configuration on Mac OS

...Home In IDEA you can configure the new JSDK in File | Project Structure, select SDKs on the left, then press [+] button, then specify the above JDK home path, you should get something like this: share | ...
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What is the reason not to use select *?

...eople claim that you should specifically name each column you want in your select query. 20 Answers ...
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SQL how to make null values come last when sorting ascending

... select MyDate from MyTable order by case when MyDate is null then 1 else 0 end, MyDate share | improve this answer ...
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Delete multiple objects in django

I need to select several objects to be deleted from my database in django using a webpage. There is no category to select from so I can't delete from all of them like that. Do I have to implement my own delete form and process it in django or does django have a way to already do this? As its impleme...
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Renew Provisioning Profile

...gn). I discovered that if I change something on the screen (in my case, I selected a previously unused device), "Submit" darkens (becomes available). Click on "Submit". You're quietly (another UI problem :) taken back to the prior page, and the "Download" and "Edit" buttons are gone, and the status...
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Comment shortcut Android Studio

... @PeterSmith Yes, but it still disrupts it. Try it for yourself; select some block of code with documentation, and press Ctrl + Shift + / twice – Jacob R Nov 26 '15 at 16:01 ...