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MySQL select 10 random rows from 600K rows fast
How can I best write a query that selects 10 rows randomly from a total of 600k?
26 Answers
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Manual deployment vs. Amazon Elastic Beanstalk
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Manos Nikolaidis
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answered Mar 3 '12 at 1:48
stepanianstepanian
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Some questions about Automatic Reference Counting in iOS5 SDK
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150
If I decide to upgrade to iOS 5, do I
need to remove all [myObject retain]
and [myObject ...
TypeScript: problems with type system
I'm just testing typescript in VisualStudio 2012 and have a problem with its type system. My html site has a canvas tag with the id "mycanvas". I'm trying to draw a rectangle on this canvas. Here's the code
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How to properly overload the
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answered Jan 24 '09 at 16:37
Mehrdad AfshariMehrdad Afshari
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MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...这个模式不设置的话会导致图片严重失真
pDC->StretchBlt(0, 0, rect.Width(), rect.Height(), &dcMem, 0, 0, bm.bmWidth,bm.bmHeight,SRCCOPY);
dcMem.SelectObject(pOldBitmap);
return TRUE;
}
2、来我们让STATIC控件透明吧
HBRUSH CDisplayBmpBackGroundDlg::OnCtlColor(...
Why do stacks typically grow downwards?
I know that in the architectures I'm personally familiar with (x86, 6502, etc), the stack typically grows downwards (i.e. every item pushed onto the stack results in a decremented SP, not an incremented one).
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How do I use Node.js Crypto to create a HMAC-SHA1 hash?
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answered Sep 20 '11 at 4:38
Ricardo TomasiRicardo Tomasi
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C# equivalent of the IsNull() function in SQL Server
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