大约有 40,700 项符合查询结果（耗时：0.0567秒） [XML]
Oracle SQL: Update a table with data from another table
...
This is called a correlated update
UPDATE table1 t1
SET (name, desc) = (SELECT t2.name, t2.desc
FROM table2 t2
WHERE t1.id = t2.id)
WHERE EXISTS (
SELECT 1
FROM ta...
How to force LINQ Sum() to return 0 while source collection is empty
... to have the sum equalize 0 rather than an exception being thrown.
Would this be possible in the query itself - I mean rather than storing the query and checking query.Any() ?
...
The resulting API analysis is too large when upload app to mac store
...
Apple forbids using private or undocumented APIs in iOS apps. Any calls you make to methods that have the same name as private or undocumented API methods will be flagged as a private API use, even if the method being called is something you have defined yourself.
App L...
Convert Django Model object to dict with all of the fields intact
...oreign_key_id': 2,
'id': 1,
'normal_value': 1,
'readonly_value': 2}
This is by far the simplest, but is missing many_to_many, foreign_key is misnamed, and it has two unwanted extra things in it.
2. model_to_dict
from django.forms.models import model_to_dict
model_to_dict(instance)
which r...
Making WPF applications look Metro-styled, even in Windows 7? (Window Chrome / Theming / Theme)
I like the window chrome on the new Office Suite and Visual Studio:
6 Answers
6
...
Generate pdf from HTML in div using Javascript
...
jsPDF is able to use plugins. In order to enable it to print HTML, you have to include certain plugins and therefore have to do the following:
Go to https://github.com/MrRio/jsPDF and download the latest Version.
Include the foll...
How can I check if multiplying two numbers in Java will cause an overflow?
...g two numbers together causes an overflow. The code looks something like this:
14 Answers
...
Capture HTML Canvas as gif/jpg/png/pdf?
Is it possible to capture or print what's displayed in an html canvas as an image or pdf?
12 Answers
...
How to call erase with a reverse iterator
I am trying to do something like this:
11 Answers
11
...
.trim() in JavaScript not working in IE
... of my JavaScript programs. It's working fine under Mozilla, but an error displays when I try it in IE8. Does anyone know what is going on here? Is there anyway I can make it work in IE?
...