大约有 44,000 项符合查询结果（耗时：0.1528秒） [XML]
MySQL Query GROUP BY day / month / year
...
GROUP BY YEAR(record_date), MONTH(record_date)
Check out the date and time functions in MySQL.
share
|
improve this answer
|
follow
|
...
Make function wait until element exists
...you can put your function. The interval solution is really a bad solution and should be used only if nothing else works.
share
|
improve this answer
|
follow
...
What is SuppressWarnings (“unchecked”) in Java?
...
Sometimes Java generics just doesn't let you do what you want to, and you need to effectively tell the compiler that what you're doing really will be legal at execution time.
I usually find this a pain when I'm mocking a generic interface, but there are other examples too. It's usually wor...
Are there strongly-typed collections in Objective-C?
I'm new to Mac/iPhone programming and Objective-C. In C# and Java we have "generics", collection classes whose members can only be of the type declared. For example, in C#
...
Can an Android NFC phone act as an NFC tag?
... an NFC tag. Now my question is, can we switch this around? Can we make an Android NFC phone behave as the tag which an NFC reader will get data from?
...
How to verify Facebook access token?
... edited Jan 13 '16 at 19:11
AndHeiberg
94911 gold badge99 silver badges2929 bronze badges
answered May 29 '13 at 20:07
...
How do I clone a Django model instance object and save it to the database?
...
Just change the primary key of your object and run save().
obj = Foo.objects.get(pk=<some_existing_pk>)
obj.pk = None
obj.save()
If you want auto-generated key, set the new key to None.
More on UPDATE/INSERT here.
Official docs on copying model instances: h...
Escaping HTML strings with jQuery
...L from strings in jQuery ? I need to be able to pass an arbitrary string and have it properly escaped for display in an HTML page (preventing JavaScript/HTML injection attacks). I'm sure it's possible to extend jQuery to do this, but I don't know enough about the framework at the moment to accomp...
Entity Framework. Delete all rows in table
...
For those that are googling this and ended up here like me, this is how you currently do it in EF5 and EF6:
context.Database.ExecuteSqlCommand("TRUNCATE TABLE [TableName]");
Assuming context is a System.Data.Entity.DbContext
...
Why does “split” on an empty string return a non-empty array?
...
For the same reason that
",test" split ','
and
",test," split ','
will return an array of size 2. Everything before the first match is returned as the first element.
share
|
...