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Best way to select random rows PostgreSQL
...pecifications (plus additional info in the comments),
You have a numeric ID column (integer numbers) with only few (or moderately few) gaps.
Obviously no or few write operations.
Your ID column has to be indexed! A primary key serves nicely.
The query below does not need a sequential scan of the...
When should I use a table variable vs temporary table in sql server?
...o object types. This also addresses your question about disk vs memory (I didn't see any significant difference in behaviour between the two).
Regarding the question in the title though as to when to use a table variable vs a local temporary table you don't always have a choice. In functions, for e...
Beautiful Soup and extracting a div and its contents by ID
Why does this NOT return the <div id="articlebody"> ... </div> tags and stuff in between? It returns nothing. And I know for a fact it exists because I'm staring right at it from
...
How can I change the default width of a Twitter Bootstrap modal box?
...t.
In your own custom CSS file, you add:
body .modal {
/* new custom width */
width: 560px;
/* must be half of the width, minus scrollbar on the left (30px) */
margin-left: -280px;
}
In your case:
body .modal-admin {
/* new custom width */
width: 750px;
/* must be hal...
完美解决phpcms批量移动内容后，新闻心情、评论排行等不更新的问题 - 更多...
...空链接了（原url已删除了）。
原因：内容移动后，catid发生了变化，而comment、mood相关的表中catid没有更新。
解决方法：只需修改一个文件搞定 phpcms/modules/content/content.php
/**
* 批量移动文章
*/
public fun...
Distributed sequence number generation?
...ing now.
You'll need to differentiate between sequence numbers and unique IDs that are (optionally) loosely sortable by a specific criteria (typically generation time). True sequence numbers imply knowledge of what all other workers have done, and as such require shared state. There is no easy way ...
Bootstrap 3 Slide in Menu / Navbar on Mobile [closed]
I am building a browser-based mobile app and I've decided to use Bootstrap 3 as the css framework for the design. Bootstrap 3 comes with a great "responsive" feature in the navigation bar where it collapses automatically if it detects a specific "break point" regarding the resolution of the browser....
A python class that acts like dict
...-in functions, like dict.get() as self.get().
You do not need to wrap a hidden self._dict. Your class already is a dict.
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Make div stay at bottom of page's content all the time even when there are scrollbars
...ixed was designed for:
#footer {
position: fixed;
bottom: 0;
width: 100%;
}
Here's the fiddle: http://jsfiddle.net/uw8f9/
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Smooth scroll to div id jQuery
I've been trying to get a scroll to div id jquery code to work correctly. Based on another stack overflow question i tried the following
...