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How can I remove duplicate rows?

.../02/18/not-exists-vs-not-in Out of the 3 I think NOT EXISTS performs best. All three will generate a plan with a self join though that can be avoided. – Martin Smith Jan 14 '11 at 9:17 ...
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Where is HttpContent.ReadAsAsync?

...Net.Http.Formatting): HttpContentExtensions Class Update: PM> install-package Microsoft.AspNet.WebApi.Client According to the System.Net.Http.Formatting NuGet package page, the System.Net.Http.Formatting package is now legacy and can instead be found in the Microsoft.AspNet.WebApi.Client...
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In git, is there a simple way of introducing an unrelated branch to a repository?

...with a git problem today, I had to introduce a branch that needed to be totally separate from the master branch. The contents of this branch really had a different origin from what had been developed on the master branch, but they were going to be merged into the master branch at a later time....
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What is the difference between a 'closure' and a 'lambda'?

... function definition is re-written as binding a lambda to a variable internally. In other languages, like Python, there are some (rather needless) distinctions between them, but they behave the same way otherwise. A closure is any function which closes over the environment in which it was defined. ...
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Join a list of strings in python and wrap each string in quotation marks

...ce'] * 100; ', '.join('"{0}"'.format(w) for w in words)""").timeit(1000) 0.32559704780578613 >>> timeit.Timer("""words = ['hello', 'world', 'you', 'look', 'nice'] * 100; '"{}"'.format('", "'.join(words))""").timeit(1000) 0.018904924392700195 So it seems that format is actually quite expe...
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Maximum packet size for a TCP connection

...ypes of networks (like Token Ring) have larger MTUs, and some types have smaller MTUs, but the values are fixed for each physical technology. share | improve this answer | fo...
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What exactly does the .join() method do?

... join takes an iterable thing as an argument. Usually it's a list. The problem in your case is that a string is itself iterable, giving out each character in turn. Your code breaks down to this: "wlfgALGbXOahekxSs".join("595") which acts the same as this: "wlfgALGbXOah...
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Where does Visual Studio look for C++ header files?

...| edited Jun 24 '19 at 22:32 Kyle 84411 gold badge1212 silver badges2222 bronze badges answered Dec 2 '0...
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while (1) Vs. for (;;) Is there a speed difference?

...p .LCFI0: movq %rsp, %rbp .LCFI1: .L2: movl $.LC0, %edi call puts jmp .L2 .LFE2: .size t_while, .-t_while .globl t_for .type t_for, @function t_for: .LFB3: pushq %rbp .LCFI2: movq %rsp, %rbp .LCFI3: .L5: movl $.LC0, %edi call puts j...
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Reconnection of Client when server reboots in WebSocket

...in amount of disconnects will cause a stack overflow. That is because you call start recursively, without ever returning. – Forivin Dec 3 '16 at 14:14 11 ...