大约有 43,000 项符合查询结果（耗时：0.0414秒） [XML]
ElasticSearch, Sphinx, Lucene, Solr, Xapian. Which fits for which usage? [closed]
... SET NAMES utf8
# query before fetching rows to index
sql_query = SELECT *, id AS pid, CRC32(safetag) as safetag_crc32 FROM hb_posts
sql_attr_uint = pid
# pid (as 'sql_attr_uint') is necessary for sphinx
# this field must be unique
# that is why I like sphinx
# you ...
Random row from Linq to Sql
...ere row.IsActive // your filter
orderby ctx.Random()
select row).FirstOrDefault();
Note that this is only suitable for small-to-mid-size tables; for huge tables, it will have a performance impact at the server, and it will be more efficient to find the number of rows (Count),...
IntelliJ IDEA JDK configuration on Mac OS
...Home
In IDEA you can configure the new JSDK in File | Project Structure, select SDKs on the left, then press [+] button, then specify the above JDK home path, you should get something like this:
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C++ Modules - why were they removed from C++0x? Will they be back later on?
... int add(int a, int b);
}
}
void not_exported_function(char* foo);
An important change of modules will be that macros and preprocessor definitions will be local to modules and will not be exported. Thus macros do not have any impact on imported modules:
#define FILE "my/file"
...
Laravel Eloquent: Ordering results of all()
...
Note, you can do:
$results = Project::select('name')->orderBy('name')->get();
This generate a query like:
"SELECT name FROM proyect ORDER BY 'name' ASC"
In some apps when the DB is not optimized and the query is more complex, and you need prevent gener...
Explanation of JSONB introduced by PostgreSQL
...h a stable release, there will be two major use cases, when you can easily select between them:
If you only work with the JSON representation in your application, PostgreSQL is only used to store & retrieve this representation, you should use json.
If you do a lot of operations on the JSON val...
Jump to editor shortcut in Intellij IDEA
...
With Alt + Home you can actually put focus on selecting the file and hit enter in order to go to the editor.
Esc is not always going to put the focus on editor.
For those on Mac (you don't have a Home key), use Command + E to open the recent files then hit enter.
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How do you perform a CROSS JOIN with LINQ to SQL?
... it.
var combo = from p in people
from c in cars
select new
{
p.Name,
c.Make,
c.Model,
c.Colour
};
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Android: “Path for project must have only one segment”
... me it was helpful to do the following:
Run -> Run Configurations -> Select Android Application
I don't know why, but there was something called New Application...delete it....after delete everything should work fine
s...
How do I specify different layouts for portrait and landscape orientations?
...mes depending on orientation and resolution, the device will automatically select the right one for its screen settings
More info here:
http://developer.android.com/guide/practices/screens_support.html
under "Resource directory qualifiers for screen size and density"
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