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Why does NULL = NULL evaluate to false in SQL server

...g with Nulls?" and "4.5 Avoiding Nulls in SQL" (follow the link: thanks to Google Books, you can read some pages on-line). Fabian Pascal on SQL NULLs From its Practical Issues in Database Management - A Reference for the Thinking Practitioner (no excerpts on-line, sorry): 10.3 Pratical Implica...
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Why don't they teach these things in school? [closed]

Over the summer, I was fortunate enough to get into Google Summer of Code. I learned a lot (probably more than I've learned in the sum of all my university coursework). I'm really wondering why they don't teach a few of the things I learned sooner in school though. To name a few: ...
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How does this giant regex work?

... It is, you can just google for a snippet of the code and find mentions of it all over the place. As he said: "I deleted it, deleted a few suspicious and large files simple called core and reset all my passwords." – Michael ...
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What is the difference between bottom-up and top-down?

... @coder000001: for python examples, you could google search for python memoization decorator; some languages will let you write a macro or code which encapsulates the memoization pattern. The memoization pattern is nothing more than "rather than calling the function, loo...
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mmap() vs. reading blocks

...I was looking for an answer and this question kept coming up at the top of Google results.) share | improve this answer | follow | ...
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Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...不会对Dokan本身做介绍,与Dokan有关的资料及代码,请到google里搜索,或到Dokan的官方网站去下载(Dokan官网),源码是C语言的,应用例子有Ruby、.Net及C的。如果想要Delphi的例子代码,只能自己去找了。 刚开始时由于不清楚如何用Do...
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What does “coalgebra” mean in the context of programming?

...pecially when the discussion is about objects, comonads, lenses, and such. Googling this term gives pages that give mathematical description of these structures which is pretty much incomprehensible to me. Can anyone please explain what coalgebras mean in the context of programming, what is their si...
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Is CSS Turing complete?

... for clever optimizations that make the web faster for everyone. Moreover, Google dedicates a whole server farm to searching for bugs in Chrome. If there were a way to write an infinite loop using CSS, then they probably would have found it already ???? ...
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How do browser cookie domains work?

...ine the cookie nowadays, most browsers don’t fully support that but just comply to the original specification by Netscape. There is a distinction between the Domain attribute value and the effective domain: the former is taken from the Set-Cookie header field and the latter is the interpretation ...
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Difference between and

... functionality behind <context:annotation-config> and <context:component-scan> . 15 Answers ...