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Is there any difference between GROUP BY and DISTINCT
...nce (in SQL Server, at least). Both queries use the same execution plan.
http://sqlmag.com/database-performance-tuning/distinct-vs-group
Maybe there is a difference, if there are sub-queries involved:
http://blog.sqlauthority.com/2007/03/29/sql-server-difference-between-distinct-and-group-by-dis...
How to loop through a HashMap in JSP?
... getValue() methods.
Here's a basic example:
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:forEach items="${map}" var="entry">
Key = ${entry.key}, value = ${entry.value}<br>
</c:forEach>
Thus your particular issue can be solved as follows:
<%@ t...
Best way to hide a window from the Alt-Tab program switcher?
...st, the XAML part:
<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Height="300" Width="300"
ShowInTaskbar="False" WindowStyle="None"
Loaded="Window_Loaded" >
...
What does $(function() {} ); do?
...is running before the DOM finishes loading.
Everything is explained here: http://docs.jquery.com/Tutorials:Introducing_$(document).ready()
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Is it possible to clone html element objects in JavaScript / JQuery?
...
var foo2 = jQuery('#foo2');
foo1.html(foo2.children().clone());
Proof: http://jsfiddle.net/de9kc/
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Does Flask support regular expressions in its URL routing?
...(debug=True, host='0.0.0.0', port=5000)
this URL should return with 200: http://localhost:5000/abc0-foo/
this URL should will return with 404: http://localhost:5000/abcd-foo/
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How do I draw a grid onto a plot in Python?
...les page is a very useful source. The example relevant for your question:
http://matplotlib.sourceforge.net/mpl_examples/pylab_examples/scatter_demo2.py
http://matplotlib.sourceforge.net/users/screenshots.html#scatter-demo
...
AWS ssh access 'Permission denied (publickey)' issue [closed]
...ux images I've used only have the root user created by default.
See also: http://www.youtube.com/watch?v=WBro0TEAd7g
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How to parse XML to R data frame
...ing the lists together in a data frame:
require(XML)
data <- xmlParse("http://forecast.weather.gov/MapClick.php?lat=29.803&lon=-82.411&FcstType=digitalDWML")
xml_data <- xmlToList(data)
In the case of your example data, getting location and start time is fairly straightforward:
lo...
Hex representation of a color with alpha channel?
...
It looks like there is no hex alpha format: http://www.w3.org/TR/css3-color/
Anyway, if you use a CSS preprocessor like SASS then you can pass an hex to rgba:
background:
rgba(#000, 0.5);
And the preprocessor just converts the hex code to rgb automatically.
...