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Efficient SQL test query or validation query that will work across all (or most) databases

...for idleness. For example, the JDBC pooling library c3p0 has a property called preferredTestQuery , which gets executed on the connection at configured intervals. Similarly, Apache Commons DBCP has validationQuery . ...
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How to add default value for html ? [closed]

...swered Jun 2 '14 at 16:54 bhavya_wbhavya_w 6,06455 gold badges2525 silver badges3636 bronze badges ...
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PHP: How to handle

...s a string. (in this example, the casting is superfluous, as echo automatically does it anyway) $content = simplexml_load_string( '<content><![CDATA[Hello, world!]]></content>' ); echo (string) $content; // or with parent element: $foo = simplexml_load_string( '<foo&g...
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Compiling simple Hello World program on OS X via command line

... @mathepic: That's 1 opinion. Personally I find it clearer to not to use it. – Martin York Nov 2 '10 at 3:31 1 ...
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MongoDB: How to update multiple documents with a single command?

...: 'field1', field2: 'field2'}) New in version 3.2 Params:: {}: select all records updated Keyword argument multi not taken share | improve this answer | follow ...
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Using custom fonts using CSS?

... Generically, you can use a custom font using @font-face in your CSS. Here's a very basic example: @font-face { font-family: 'YourFontName'; /*a name to be used later*/ src: url('http://domain.com/fonts/font.ttf'); /*URL to ...
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How do I get the full url of the page I am on in C#

... I usually use Request.Url.ToString() to get the full url (including querystring), no concatenation required. share | improve thi...
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Stop jQuery .load response from being cached

... All this cache: false does is append a number (I believe its a timestamp) to the end of a url when making the request. The other place to handle the cache settings are from the server or web app by setting various HTTP respo...
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Generating random strings with T-SQL

... that generates object names in a reproducible manner: alter procedure usp_generateIdentifier @minLen int = 1 , @maxLen int = 256 , @seed int output , @string varchar(8000) output as begin set nocount on; declare @length int; declare @alpha varchar(8000) , @digit...
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How to sort mongodb with pymongo

...rameters. So if you want to sort by, let's say, id then you should .sort("_id", 1) For multiple fields: .sort([("field1", pymongo.ASCENDING), ("field2", pymongo.DESCENDING)]) share | improve thi...