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Facebook database design?
...s to make a composite primary key. A unique key, absolutely. The clustered index on that unique key, definitely. But I'd also put some sort of non-composite identity as the PK with a nonclustered index. That would allow other tables that need a "friend relationship ID" FK to easily tie to this table...
实战Nginx与PHP（FastCGI）的安装、配置与优化 - 更多技术 - 清泛网 - 专注...
...rt.conf;
server_name www.ixdba.net ixdba.net;
location / {
index index.html index.php;
root /web/www/www.ixdba.net;
}
location ~ \.php$ {
root html;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
...
I forgot the password I entered during postgres installation
...find the file pg_hba.conf - it may be located, for example in /etc/postgresql-9.1/pg_hba.conf.
cd /etc/postgresql-9.1/
Back it up
cp pg_hba.conf pg_hba.conf-backup
place the following line (as either the first uncommented line, or as the only one):
For all occurrence of below (local and host)...
Creating a CSS3 box-shadow on all sides but one
... Works great! The parent div can be placed on the correct z-index
– Rvanlaak
May 26 '13 at 18:13
I'm cu...
How to remove focus around buttons on click
...
I found this Q and A on another page, and overriding the button focus style worked for me. This problem may be specific to MacOS with Chrome.
.btn:focus {
outline: none;
box-shadow: none;
}
Note though that this has implications fo...
How do I get the day of the week with Foundation?
...nd similar), which returns an NSArray of NSStrings starting with Sunday at index 0.
– beetstra
Nov 9 '11 at 12:18
Okay...
jQuery get values of checked checkboxes into array
...est($el.attr('type')) && !$el.prop('checked'))return;
if(name.indexOf('[') > -1)
{
var name_ar = name.split(']').join('').split('['),
name = name_ar[0],
index = name_ar[1];
data[name] = data[name] || [];
data[name][index] = $...
Mercurial error: abort no username supplied
...rial. I found the answer in an inobvious place so I'm asking/answering the question myself so others don't have to search like I did.
...
Received an invalid column length from the bcp client for colid 6
...need to subtract 1 from it to get the value. After that it is used as the index of the _sortedColumnMappings ArrayList of the SqlBulkCopy instance not the index of the column mappings that were added to the SqlBulkCopy instance. One thing to note is that SqlBulkCopy will stop on the first error re...
What does jquery $ actually return?
...er the wrapped set like an
array or access individual elements
via the indexer ($(sel)[0] for
example). More importantly, you can
also apply jQuery functions against
all the selected elements.
About returning nothing:
Does it always return an array? Does it return null?
You always ...