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Select n random rows from SQL Server table
...th about 50,000 rows in it. I want to select about 5,000 of those rows at random. I've thought of a complicated way, creating a temp table with a "random number" column, copying my table into that, looping through the temp table and updating each row with RAND() , and then selecting from that table...
Converting Java objects to JSON with Jackson
...ode No serializer found for class com.liveprocessor.LPClient.LPTransaction and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) )
– user5268786
Jan 10 '16 at 14:38
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How to retrieve an element from a set without removing it?
...pop(), since iteration seems to sort the elements. I would prefer them in random order...
– Daren Thomas
Sep 12 '08 at 20:17
10
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Why em instead of px?
I heard you should define sizes and distances in your stylesheet with em instead of in pixels. So the question is why should I use em instead of px when defining styles in css? Is there a good example that illustrates this?
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How to change column datatype in SQL database without losing data
I have SQL Server database and I just realized that I can change the type of one of the columns from int to bool .
11 A...
How can I stop redis-server?
...
Either connect to node instance and use shutdown command or if you are on ubuntu you can try to restart redis server through init.d:
/etc/init.d/redis-server restart
or stop/start it:
/etc/init.d/redis-server stop
/etc/init.d/redis-server start
On Mac...
Detect if Visual C++ Redistributable for Visual Studio 2012 is installed
... collected this info from a Windows 10 x64 box. I'm just going to go ahead and dump all of these redist versions and the reg keys I search for to detect installation.:
Visual C++ 2005
Microsoft Visual C++ 2005 Redistributable (x64)
Registry Key: HKLM\SOFTWARE\Classes\Installer\Products\1af2a8da7...
Working with select using AngularJS's ng-options
...gularJS actually allows you to select entire objects with select controls, and not just primitive types. For example:
app.controller('MainCtrl', function($scope) {
$scope.items = [
{ id: 1, name: 'foo' },
{ id: 2, name: 'bar' },
{ id: 3, name: 'blah' }
];
});
<div ng-contr...
Converting HTML files to PDF [closed]
... say the real problem with Flying Saucer is that it requires a well-formed and valid XML document. It's easy to unwittingly break the PDF rendering by including something like an ampersand in your HTML, or some javascript code that makes your rendered HTML not strict XHTML. Though this can be mitiga...
Removing fields from struct or hiding them in JSON Response
...hat, upon being called, performs a query, creates an instance of a struct, and then encodes that struct as JSON before sending back to the caller. I'd now like to allow the caller to be able to select the specific fields they would like returned by passing in a "fields" GET parameter.
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