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What is the difference between save and insert in Mongo DB?
...he same.
save behaves differently if it is passed with an "_id" parameter.
For save, If the document contains _id, it will upsert querying the collection on the _id field, If not, it will insert.
If a document does not exist with the specified _id value, the save() method performs an insert with th...
Left Join With Where Clause
...ings from the settings table but also grab the character setting if exists for x character.
6 Answers
...
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...
remove objects from array by object property
...
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...
How to do a FULL OUTER JOIN in MySQL?
...
You don't have FULL JOINS on MySQL, but you can sure emulate them.
For a code SAMPLE transcribed from this SO question you have:
with two tables t1, t2:
SELECT * FROM t1
LEFT JOIN t2 ON t1.id = t2.id
UNION
SELECT * FROM t1
RIGHT JOIN t2 ON t1.id = t2.id
The query above works for specia...
Would it be beneficial to begin using instancetype instead of id?
...
it's useful for convenience constructors mostly
– Catfish_Man
Feb 5 '13 at 19:38
5
...
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_...
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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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...