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Possible to do a MySQL foreign key to one of two possible tables?
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What you're describing is called Polymorphic Associations. That is, the "foreign key" column contains an id value that must exist in one of a set of target tables. Typically the target tables are related in some way, such as being instances of some common superclass of data. You'd also need anot...
Hibernate, @SequenceGenerator and allocationSize
...equence.
However, there is the option to get the behavior you are looking for. First see my reply on Is there a way to dynamically choose a @GeneratedValue strategy using JPA annotations and Hibernate? That will give you the basics. As long as you are set up to use that SequenceStyleGenerator, H...
Left Join With Where Clause
...ings from the settings table but also grab the character setting if exists for x character.
6 Answers
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Oracle SQL: Update a table with data from another table
... In your first code example: Is the outer WHERE-clause necessary for correct results? Or do you use it only to speed up the query?
– Mathias Bader
Aug 5 '13 at 7:53
43
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Can I specify multiple users for myself in .gitconfig?
... my personal email address under [user] , since that's what I want to use for Github repos.
20 Answers
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Would it be beneficial to begin using instancetype instead of id?
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it's useful for convenience constructors mostly
– Catfish_Man
Feb 5 '13 at 19:38
5
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How to iterate object in JavaScript? [duplicate]
...sign it to the data variable. After that you can iterate it using a normal for loop. Each row will be a row object in the array.
var data = dictionary.data;
for (var i in data)
{
var id = data[i].id;
var name = data[i].name;
}
You can follow similar approach to iterate the image array....
How to check task status in Celery?
...scenario.
By default, Celery does not record a "running" state.
In order for Celery to record that a task is running, you must set task_track_started to True. Here is a simple task that tests this:
@app.task(bind=True)
def test(self):
print self.AsyncResult(self.request.id).state
When task_...
How to annotate MYSQL autoincrement field with JPA annotations
...on and the dialect are correct and coherent, it should work. If it doesn't for you, maybe something is out of sync (do a clean build, double check the build directory, etc) or something else is just wrong (check the logs for anything suspicious).
Regarding the dialect, the only difference between M...
remove objects from array by object property
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I assume you used splice something like this?
for (var i = 0; i < arrayOfObjects.length; i++) {
var obj = arrayOfObjects[i];
if (listToDelete.indexOf(obj.id) !== -1) {
arrayOfObjects.splice(i, 1);
}
}
All you need to do to fix the bug is decreme...