大约有 7,000 项符合查询结果（耗时：0.0195秒） [XML]
Copy values from one column to another in the same table
...ble name and it's surrounded by grave accent (aka back-ticks `) as this is MySQL convention to escape keywords (and TABLE is a keyword in that case).
BEWARE, that this is pretty dangerous query which will wipe everything in column test in every row of your table replacing it by the number (regardle...
Using “like” wildcard in prepared statement
I am using prepared statements to execute mysql database queries. And I want to implement a search functionality based on a keyword of sorts.
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What is the email subject length limit?
...255 is probably the most common (and more efficient) data column length in MySQL / MariaDB. Bytes are most certainly still relevant. MySQL will use 1 byte to store the length if it is less than 256, or more otherwise. Take a look at how C++ implements std::string if you think string lengths aren'...
What is the difference between XML and XSD?
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Take an example
<root>
<parent>
<child_one>Y</child_one>
<child_two>12</child_two>
</parent>
</root>
and design an xsd for that:
<xs:schema attributeFormDefault="unqualified" el...
Oracle: If Table Exists
...pts for an Oracle database, and was hoping Oracle had something similar to MySQL's IF EXISTS construct.
15 Answers
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How do I define global variables in CoffeeScript?
...our quote from the docs:
...targeting both CommonJS and the browser: root = exports ? this
This is obviously coffee-script, so let's take a look into what this actually compiles to:
var root;
root = (typeof exports !== "undefined" && exports !== null) ? exports : this;
First it ...
Rails 3 datatypes?
...t by using :limit option with :integer. I have tested it on Rails 3 and MySQL, they are still working, just as said in the blog, they are signed integer.
– RacsO
Dec 18 '13 at 3:23
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Should I choose ActivePerl or Strawberry Perl for Windows? [duplicate]
....15.
I think I dropped Strawberry Perl after trying to install DBI + DBD::mysql on Windows 7 (which is a no brainer in ActivePerl; just click on the ppms and choose install).
But maybe that's solved by now. And maybe one can choose the directory where Strawberry Perl gets installed (I couldn't).
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Serving favicon.ico in ASP.NET MVC
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Placing favicon.ico in the root of your domain only really affects IE5, IIRC. For more modern browsers you should be able to include a link tag to point to another directory:
<link rel="SHORTCUT ICON" href="http://www.mydomain.com/content/favicon.i...
Fragment over another fragment issue
...ayoutInflater inflater,ViewGroup container,Bundle savedInstance){
View root = somehowCreateView();
/*here is an implementation*/
root.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
return true;
}
});
...