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Condition within JOIN or WHERE
...ou can join on indexed columns for both tables. You should be able to cut down on logical reads with most queries doing this too, which is, in a high volume environment, a much better performance indicator than execution time.
I'm always mildly amused when someone shows their SQL benchmarking and ...
Convert Django Model object to dict with all of the fields intact
...o_dict method like @karthiker suggested, then that just boils this problem down to a sets problem.
>>># Returns a set of all keys excluding editable = False keys
>>>dict = model_to_dict(instance)
>>>dict
{u'id': 1L, 'reference1': 1L, 'reference2': [1L], 'value': 1}
>...
css3 transition animation on load?
...a>
<a href="#">Contact</a>
</header>
Break it down...
The important parts here are the keyframe animation which we call slideInFromLeft...
@keyframes slideInFromLeft {
0% {
transform: translateX(-100%);
}
100% {
transform: translateX(0);
}...
How to “return an object” in C++?
...omething you have no idea is a problem; especially if you actually slow it down or get nothing out of it. And if you're using C++0x, move-semantics make this a non-issue.
– GManNickG
Jul 28 '10 at 6:40
...
Most efficient way to cast List to List
...seconds after their creation.
The solution to this problem is, of course, down-casting the collection. Here is the best way to do it:
static <T,U extends T> List<T> downCastList( List<U> list )
{
return castList( list );
}
Which brings us to the castList() function:
static...
Why are global variables evil? [closed]
...
cache[args] = ...
This makes globals' manipulations easier to track down.
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Simple way to calculate median with MySQL
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@rob can you help edit please? Or should I just bow down to the velcrow solution? (not actually sure how to defer to another solution) Thanks, Jacob
– TheJacobTaylor
Jun 18 '12 at 23:50
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Can an html element have multiple ids?
... What is illegal about this answer? Can someone explain the down vote?
– tpower
Oct 12 '08 at 10:16
20
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T-SQL: Using a CASE in an UPDATE statement to update certain columns depending on a condition
...005 and it works perfectly as shown. I would sure like to know why it was down voted and an example showing the NULL value getting updated, because in my test above, the null value is not updated. I've always thought that the simplest answer is the best and if I am dealing with a database with mil...
Databinding an enum property to a ComboBox in WPF
...cepted but now deleted answer provided by ageektrapped I created a slimmed down version without some of the more advanced features. All the code is included here to allow you to copy-paste it and not get blocked by link-rot.
I use the System.ComponentModel.DescriptionAttribute which really is inten...