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Cannot change column used in a foreign key constraint
...REIGN KEY fk_fav_food_person_id,
MODIFY person_id SMALLINT UNSIGNED;
Now you can change you person_id
ALTER TABLE person MODIFY person_id SMALLINT UNSIGNED AUTO_INCREMENT;
recreate foreign key
ALTER TABLE favorite_food
ADD CONSTRAINT fk_fav_food_person_id FOREIGN KEY (person_id)
...
Simple example of threading in C++
...std::string msg)
{
std::cout << "task1 says: " << msg;
}
Now create the thread object that will ultimately invoke the function above like so:
std::thread t1(task1, "Hello");
(You need to #include <thread> to access the std::thread class)
The constructor's arguments are th...
How do I count the number of occurrences of a char in a String?
...ly-written and poorly-maintained "*Utils" classes. Part of your job is to know what's available in Apache Commons.
– AbuNassar
Oct 5 '16 at 14:58
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Browse and display files in a git repo without cloning
... and reachable of course: chmod a+x git-ls; sudo cp git-ls /usr/local/bin. Now, you just run it as you wish:
git-ls https://github.com/mrquincle/aim-bzr
git-ls https://github.com/mrquincle/aim-bzr/tree/master/aim_modules
Also know that there is a git instaweb utility for your local files. To have...
What is a stored procedure?
...ct based on the primary key, that means each table will have 4 procedures. Now take a decent size database of 400 tables, and you have 1600 procedures! And that's assuming you don't have duplicates which you probably will.
This is where using an ORM or some other method to auto generate your basic ...
Measuring the distance between two coordinates in PHP
...
@TreyA - Yes i know, i'm not sure what you want to say with that. Have you tested the function and did it calculate a wrong result? And have you looked at the formula in Wikipedia? You should really do a test of your own and give me an examp...
Increasing the timeout value in a WCF service
...ing, baseAddress);
serviceHost.Open();
// The service can now be accessed.
Console.WriteLine("The service is ready.");
Console.WriteLine("Press <ENTER> to terminate service.");
Console.WriteLine();
Console.ReadLine();
}
catch (Communica...
How to speed up insertion performance in PostgreSQL
...r data.
If you're using RAID 5 or RAID 6 for direct attached storage, stop now. Back your data up, restructure your RAID array to RAID 10, and try again. RAID 5/6 are hopeless for bulk write performance - though a good RAID controller with a big cache can help.
If you have the option of using a hard...
iTextSharp - Sending in-memory pdf in an email attachment
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I am working on it right now and let you know shortly. Thanks!
– Gus Cavalcanti
Jul 28 '09 at 20:28
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How are everyday machines programmed?
...d the like were running dos (some brands), sadly some of those run windows now (grocery store or other self checkout lines). The desire to have tv shows blaring at you while you pump your gas, and dancing baloney on the screen when not, has lead to more horsepower. Likewise the coke and water mach...