大约有 44,998 项符合查询结果(耗时:0.0640秒) [XML]
Doctrine - How to print out the real sql, not just the prepared statement?
...
Doctrine is not sending a "real SQL query" to the database server : it is actually using prepared statements, which means :
Sending the statement, for it to be prepared (this is what is returned by $query->getSql())
And, then, sending the parameters (returned by $query->getParameters(...
Android. Fragment getActivity() sometimes returns null
In developer console error reports sometimes I see reports with NPE issue. I do not understand what is wrong with my code. On emulator and my device application works good without forcecloses, however some users get NullPointerException in fragment class when the getActivity() method is called.
...
How to change an Eclipse default project into a Java project
I checked out a project from SVN and did not specify the project type, so it checked out as a "default" project. What is the easiest way to quickly convert this into a "Java" project?
...
appearanceWhenContainedIn in Swift
...ontainerTypes: [AnyObject.Type]) -> Self
Which can be used like so:
UITextField.appearanceWhenContainedInInstancesOfClasses([MyViewController.self]).keyboardAppearance = .Light
If you still need to support iOS 8 or earlier, use the following original answer to this question.
For iOS 8 &...
Adding a parameter to the URL with JavaScript
In a web application that makes use of AJAX calls, I need to submit a request but add a parameter to the end of the URL, for example:
...
Importance of varchar length in MySQL table
...) which is generally much bigger than I need. Is there a big performance hit in giving a varchar field much more length than necessary?
...
Call a stored procedure with parameter in c#
...
It's pretty much the same as running a query. In your original code you are creating a command object, putting it in the cmd variable, and never use it. Here, however, you will use that instead of da.InsertCommand.
Also, use...
How to deal with SQL column names that look like SQL keywords?
...my columns is called from . I can't change the name because I didn't make it.
Am I allowed to do something like SELECT from FROM TableName or is there a special syntax to avoid the SQL Server being confused?
...
Single quotes vs. double quotes in Python [closed]
... or if I forget. I use triple double quotes for docstrings and raw string literals for regular expressions even if they aren't needed.
For example:
LIGHT_MESSAGES = {
'English': "There are %(number_of_lights)s lights.",
'Pirate': "Arr! Thar be %(number_of_lights)s lights."
}
def lights_m...
Sorting a Python list by two fields
...
like this:
import operator
list1 = sorted(csv1, key=operator.itemgetter(1, 2))
share
|
improve this answer
|
follow
|
...
