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Primary key or Unique index?

... -- Create unique index on foo. INSERT INTO table1 (foo, bar) VALUES (1, 2); -- OK INSERT INTO table1 (foo, bar) VALUES (2, 2); -- OK INSERT INTO table1 (foo, bar) VALUES (3, 1); -- OK INSERT INTO table1 (foo, bar) VALUES (1, 4); -- Fails! Duplicate entry '1' for key 'ux_table1_foo' The last in...
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How do I check the operating system in Python?

... 297 You can use sys.platform: from sys import platform if platform == "linux" or platform == "lin...
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Which MySQL data type to use for storing boolean values

... 1249 For MySQL 5.0.3 and higher, you can use BIT. The manual says: As of MySQL 5.0.3, the BIT data...
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Comma in C/C++ macro

... 112 Because angle brackets can also represent (or occur in) the comparison operators <, >, &lt...
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What is the http-header “X-XSS-Protection”?

...X-XSS-Protection: 0 See also http://blogs.msdn.com/b/ieinternals/archive/2011/01/31/controlling-the-internet-explorer-xss-filter-with-the-x-xss-protection-http-header.aspx share | improve this ans...
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Getting jQuery to recognise .change() in IE

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How to inflate one view with a layout

... loeschg 27.5k2525 gold badges8888 silver badges142142 bronze badges answered Feb 25 '10 at 17:18 Graeme Dunca...
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Where can I download IntelliJ IDEA Color Schemes? [closed]

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Javascript sort array by two fields

... answered May 25 '11 at 19:47 Chris EberleChris Eberle 43.7k1111 gold badges7474 silver badges110110 bronze badges ...
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Is this object-lifetime-extending-closure a C# compiler bug?

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