大约有 45,000 项符合查询结果（耗时：0.0452秒） [XML]
How can I create a unique constraint on my column (SQL Server 2008 R2)?
...the "General" tab.
Make sure you have the column you want to make unique selected in the "columns" box.
Change the "Type" box to "Unique Key".
Click "Close".
You see a little asterisk in the file window, this means changes are not yet saved.
Press Save or hit Ctrl+s. It should save, and your colu...
jQuery - setting the selected value of a select control via its text description
I have a select control, and in a javascript variable I have a text string.
21 Answers
...
Script entire database SQL-Server
... By default it doesn't script the data. Under Table/View Options select "Script Data -> True". Another useful option is "Script Drop -> True"
– Stephen Hosking
Aug 3 '11 at 8:13
...
Stop an input field in a form from being submitted
...act with them at all- so if you have a disabled text field, the user can't select the text. If you have a disabled checkbox, the user can't change its state.
You could also write some javascript to fire on form submission to remove the fields you don't want to submit.
...
Is String.Contains() faster than String.IndexOf()?
I have a string buffer of about 2000 characters and need to check the buffer if it contains a specific string.
Will do the check in a ASP.NET 2.0 webapp for every webrequest.
...
What does an Asterisk (*) do in a CSS selector?
...
It is a wildcard, this means it will select all elements within that portion of the DOM.
For example, if I want apply margin to every element on my entire page you can use:
* {
margin: 10px;
}
You can also use this within sub-selections, for example the ...
Vagrant stuck connection timeout retrying
... the GUI of Virtual box to see that it was waiting for input on startup to select whether I wanted to boot directly to ubuntu or safemode etc.
To turn on the GUI you have to put this in your vagrant config Vagrantfile:
config.vm.provider :virtualbox do |vb|
vb.gui = true
end
...
Output data from all columns in a dataframe in pandas [duplicate]
...idth of your console.
Alternatively, you can change the console width (in chars) from the default of 80 using e.g:
pandas.set_option('display.width', 200)
share
|
improve this answer
|
...
jQuery: fire click() before blur() event
...opdown from stealing focus. The slight advantage is that the value will be selected when the mouse button is released, which is how native select components work. JSFiddle
$('input').on('focus', function() {
$('ul').show();
}).on('blur', function() {
$('ul').hide();
});
$('ul').on('mousedo...
Debug code-first Entity Framework migration codes
... the top of my Configuration.Seed method. It causes a popup that lets you select your Visual Studio to debug the code. However, my system hangs when I select it (perhaps unrelated).
– Talon
Sep 12 '13 at 9:21
...