girls who play video games dating site - Updating a row in mysql
Inno DB As you can see the results are very interesting.
You can clearly see the difference of both storage engine and transactions (at least for My ISAM).
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It means that the new row is already locked by your statement, it’s no way to update the row by the trigger and the transaction is rolled back, no row is inserted.
To solve this, the simplest way is to change the trigger time from The reason is that if you want to set new values of columns on the new row by a trigger, the best way is to make the new values join in the insert-ready ad hoc of the new row before the new row is actually inserted.
Here’s an example of logfile, with each view logged on a single line using this format: part is most important, since it’s the only file writing mode that can be used with multiple processes (remember that you have MANY viewers at the same time, and if only 2 of them try to write a file at the same time your file will be pretty much screwed – no, you don’t lose the file itself, you just lose the content, which is even more important).
An alternative would be to use file locking, but it’s really really inefficient when you have lots of visitors (digg effect anyone? However, the append mode is optimized by the operating system and stores the content in a buffer, making sure the content is write properly.
After a bit of research I figured out My ISAM doesn’t support transactions (yes, silly me), so the tests above were done using simple consequent queries (modified up there as well).
However, it seems My SQL does some internal optimizations and runs them very efficiently.
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Here’s where the multiple updates in a single query trick comes into play.Tags: Adult Dating, affair dating, sex dating