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How important is the order of columns in indexes?
...wn the number of results to deal with before the next step means better performance.
Since the index is also stored this way, there's no backtracking across the index to find the first column when you're querying on it.
In short: No, it's not for show, there are real performance benefits.
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how to implement regions/code collapse in javascript
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answered Dec 17 '09 at 13:01
user195488user195488
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Why is “except: pass” a bad programming practice?
...xception we were not prepared for. That way, we can still retain as much information about unexpected exceptions, which we then can use to extend our code to handle those explicitly (if we can recover from them) or—in case of a bug—to create test cases to make sure it won’t happen again. But o...
Google Maps: Auto close open InfoWindows?
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edited Apr 8 '14 at 12:01
Aamir Afridi
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Get current date/time in seconds
...hing. In the event you'd like to get a formatted time like 'October 22nd, 2015' you can craft your own function to return that from a timestamp as an argument or use one already here at Stack. Anyways, hope that gives you some insight as to when this would be useful. @NickCraver
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How exactly does CMake work?
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As stated on its website:
Cmake is cross-platform, open-source build system for managing the build process of software using a compiler-independent method
In most cases it is used to generate project/make files - in your example it has produced Makefile which are used...
Converting BigDecimal to Integer
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answered Oct 28 '10 at 14:01
willcodejavaforfoodwillcodejavaforfood
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Printing a variable memory address in swift
... results. Example: print(self.description) prints <MyViewController: 0x101c1d580>, we use it as a reference. var mutableSelf = self; withUnsafePointer(to: &mutableSelf) { print(String(format: "%p", $0)) } prints 0x16fde4028 which is clearly different address. Can anybody explain why?
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What are Maven goals and phases and what is their difference?
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– Gerold Broser
Feb 3 '18 at 18:01
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How to stretch the background image to fill a div
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hendos43hendos43
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