大约有 40,000 项符合查询结果（耗时：0.0270秒） [XML]
Entity Framework and SQL Server View
...issues using Tillito solution. Lets say you have the table:
Create table OrderDetail
(
Id int primary key,
CustomerId int references Customer(Id),
Amount decimal default(0)
);
Create index ix_customer on OrderDetail(CustomerId);
and your view is something like thi...
Multiline strings in VB.NET
...5.
Dim sql As String = "
SELECT ID, Description
FROM inventory
ORDER BY DateAdded
"
You can combine them with string interpolation to maximize usefullness:
Dim primaryKey As String = "ID"
Dim inventoryTable As String = "inventory"
Dim sql As String = $"
SELECT {primaryKey}, Descrip...
Setting Django up to use MySQL
I want to move away from PHP a little and learn Python. In order to do web development with Python I'll need a framework to help with templating and other things.
...
Create a dictionary with list comprehension
...for k, v in blahs}
And we see that it worked, and should retain insertion order as-of Python 3.7:
>>> mydict
{'blah0': 'blah', 'blah1': 'blah', 'blah2': 'blah', 'blah3': 'blah'}
In Python 2 and up to 3.6, order was not guaranteed:
>>> mydict
{'blah0': 'blah', 'blah1': 'blah', 'bl...
Clear back stack using fragments
I ported my Android app to honeycomb and I did a big refactor in order to use fragments. In my previous version, when I pressed the Home button I used to do a ACTIVITY_CLEAR_TOP in order to reset the back stack.
...
Connecting overloaded signals and slots in Qt 5
... "above" what? Don't assume that answers are presented to everyone in the order you're currently seeing them!
– Toby Speight
Sep 19 '17 at 16:09
1
...
What is the difference between a stored procedure and a view?
...
Also Views shouldn't contain any "order by" or "top" clauses
– sksallaj
Mar 31 '16 at 16:34
2
...
JFrame in full screen Java
...eason. I created one AppFrame class (with some default properties) and in order to make any class as JFrame I simply extend it. It has setVisible as true. Now above three lines has to be in same order, if visible is before ExtendedState you will get below error. When I corrected order error gone...
MySQL skip first 10 results
...do, for impala and other databases where the limit with offset requires an order argument which is not always desirable.
– KarthikS
Apr 23 '17 at 22:26
add a comment
...
Reverse colormap in matplotlib
I would like to know how to simply reverse the color order of a given colormap in order to use it with plot_surface.
7 Answ...