大约有 800 项符合查询结果（耗时：0.0131秒） [XML]
Insert into a MySQL table or update if exists
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Check out REPLACE
http://dev.mysql.com/doc/refman/5.0/en/replace.html
REPLACE into table (id, name, age) values(1, "A", 19)
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How to export a mysql database using Command Prompt?
...to command prompt at this path,
C:\Program Files (x86)\MySQL\MySQL Server 5.0\bin>
Then give this command to export your database (no space after -p)
mysqldump -u[username] -p[userpassword] yourdatabase > [filepath]wantedsqlfile.sql
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Generate JSON string from NSDictionary in iOS
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Apple added a JSON parser and serializer in iOS 5.0 and Mac OS X 10.7. See NSJSONSerialization.
To generate a JSON string from a NSDictionary or NSArray, you do not need to import any third party framework anymore.
Here is how to do it:
NSError *error;
NSData *jsonData...
How to embed an autoplaying YouTube video in an iframe?
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I find that on mobile (Webview on Android 5.0) the function onYouTubeIframeAPIReady() isn't triggered. Anyone have a solution ?
– Someone Somewhere
Jan 19 '15 at 19:08
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Returning the product of a list
... solutions: either start with a float type list by doing np.prod(np.arange(5.0,101.0)) or convert it to float by doing np.prod(np.array(range(5,101)).astype(np.float64)). Note that NumPy uses np.float64 instead of float. I don't know the difference.
– Wood
Jun ...
How can I create a UILabel with strikethrough text?
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Strikethrough in Swift 5.0
let attributeString = NSMutableAttributedString(string: "Your Text")
attributeString.addAttribute(NSAttributedString.Key.strikethroughStyle,
value: NSUnderlineStyle.single.rawValue,
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Disabling user selection in UIWebView
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I can confirm that the following code works in iOS 5.0 - 8.0.
- (void)webViewDidFinishLoad:(UIWebView *)webView {
// Disable user selection
[webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitUserSelect='none';"];
// Disable cal...
How to run SQL script in MySQL?
...file
that should do it!
More info here: http://dev.mysql.com/doc/refman/5.0/en/mysql-batch-commands.html
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Android: Is it possible to display video thumbnails?
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Hi Cris, I have 3 devices 4.1 4.2.2 and 5.0 and it works with no problem, post a question with your problem and some code, and i could help you.
– Jorgesys
Aug 23 '15 at 17:16
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How can I do an UPDATE statement with JOIN in SQL Server?
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For more info read multiple table update:
http://dev.mysql.com/doc/refman/5.0/en/update.html
UPDATE [LOW_PRIORITY] [IGNORE] table_references
SET col_name1={expr1|DEFAULT} [, col_name2={expr2|DEFAULT}] ...
[WHERE where_condition]
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