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How to randomly select rows in SQL?
...to your question:
Selecting a random row in SQL
Select a random row with MySQL:
SELECT column FROM table
ORDER BY RAND()
LIMIT 1
Select a random row with PostgreSQL:
SELECT column FROM table
ORDER BY RANDOM()
LIMIT 1
Select a random row with Microsoft SQL Server:
SELECT TOP 1 column FROM ta...
What is stdClass in PHP?
...
maybe he used mysql_fetch_object. that creates an instance of stdlcass if im not mistaken.
– Galen
May 31 '09 at 5:58
6...
Automatically deleting related rows in Laravel (Eloquent ORM)
...ete, but not all DBs support this, so extra care is required. For instance MySQL with MyISAM engine doesn't, nor any NoSQL DBs, SQLite in the default setup, etc. Additional problem is that artisan will not warn you about this when you run migrations, it will just not create foreign keys on MyISAM ta...
can we use xpath with BeautifulSoup?
... One warning: I've noticed if there is something outside the root (like a \n outside the outer <html> tags), then referencing xpaths by the root will not work, you have to use relative xpaths. lxml.de/xpathxslt.html
– wordsforthewise
Sep 6 '...
IIS7 deployment - duplicate 'system.web.extensions/scripting/scriptResourceHandler' section
...his fails is because these section definitions are already included in the root web.config in .NET 4.0 (see %windir%\microsoft.net\framework\v4.0.30319\config\machine.config) that include all the system.web.extensions declared already.
Another quick fix is to have the application pool set to 2.0 ju...
Working copy XXX locked and cleanup failed in SVN
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For those using Tortoise SVN, you can run clean up on the root folder of the check-out directory and force Break Locks. Additionally you can ask it to delete unversioned files. Then take an update.
– Obaid
Mar 15 '16 at 7:44
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sphinx-build fail - autodoc can't import/find module
...
If
module root path is correctly set in conf.py
__init__.py is placed correctly
rst syntax is correct
and your autodoc still cannot find the modules...
It may be because the dependencies of those modules are not satisfied under your p...
How do I create a copy of an object in PHP?
...ing this, that cloning will keep reference to the original object. Running MySQL queries using the cloned object may have unpredictable results because of this, as execution may not take place in a linear fashion.
– Ælex
Mar 26 '13 at 16:30
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Build project into a JAR automatically in Eclipse
...eenshot below. Note the Ant icon on build.xml.
Step 2
Right-click on the root node in the project.
- Select Properties
- Select Builders
- Select New
- Select Ant Build
- In the Main tab, complete the path to the build.xml file in the bin folder.
Check the Output
The Eclipse output windo...
How do I keep the screen on in my App? [duplicate]
...ul points):
It doesn't matter that keepScreenOn should be used on a Main/Root/Parent View. It can be used with any child view and will work the same way it works in a parent view.
The only thing that matters is that the view's visibility must be visible. Otherwise, it will not work!
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