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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...does a DELETE followed by an INSERT internally, which has some unexpected side effects:
A new auto-increment ID is allocated.
Dependent rows with foreign keys may be deleted (if you use cascading foreign keys) or else prevent the REPLACE.
Triggers that fire on DELETE are executed unnecessarily.
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Shell Script — Get all files modified after
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as simple as:
find . -mtime -1 | xargs tar --no-recursion -czf myfile.tgz
where find . -mtime -1 will select all the files in (recursively) current directory modified day before. you can use fractions, for example:
find . -mtime -1.5 | xargs tar --no-recursion -czf myfile.tgz
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How to capture no file for fs.readFileSync()?
Within node.js readFile() shows how to capture an error, however there is no comment for the readFileSync() function regarding error handling. As such, if I try to use readFileSync() when there is no file, I get the error Error: ENOENT, no such file or directory .
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jQuery to retrieve and set selected option value of html select element
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The way you have it is correct at the moment. Either the id of the select is not what you say or you have some issues in the dom.
Check the Id of the element and also check your markup validates at here at W3c.
Without a valid dom jQuery cannot work correctly with the selectors...
What's an easy way to read random line from a file in Unix command line?
What's an easy way to read random line from a file in Unix command line?
13 Answers
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How do I “Add Existing Item” an entire directory structure in Visual Studio?
I have a free standing set of files not affiliated with any C# project at all that reside in a complicated nested directory structure.
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How to loop over directories in Linux?
...iven directory. How can I loop through these directories (and skip regular files)?
9 Answers
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App.Config Transformation for projects which are not Web Projects in Visual Studio?
...ig Transformation features by which we can maintain multiple configuration files for different environments. But the same feature is not available for App.Config files for Windows Services/WinForms or Console Application.
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What is the best extension for SQLite database files? [closed]
...ed on the database scheme you are storing; treat your database schema as a file format, with SQLite simply being an encoding used for that file format. So, you might use .bookmarks if it's storing bookmarks, or .index if it's being used as an index.
If you want to use a generic extension, I'd use ....
Unable to hide welcome screen in Emacs
...rtup-screen, so simply add (setq inhibit-startup-screen t) to your .emacs file will solve the problem.
Given that configuration, your startup buffer is now *scratch*, if you want to further change the default buffer, M-h v initial-buffer-choice <RET> will help.
Official document: http://www...