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How to 'insert if not exists' in MySQL?
...tober 2007
To start: as of the latest MySQL, syntax presented in the title is not
possible. But there are several very easy ways to accomplish what is
expected using existing functionality.
There are 3 possible solutions: using INSERT IGNORE, REPLACE, or
INSERT … ON DUPLICATE KEY U...
Colorize logs in eclipse console
...(or anyother, HTML ?) where I could embed the colors in the string to have it colored in the logs.
10 Answers
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Setting the default Java character encoding
...ytes() and the default constructors of InputStreamReader and OutputStreamWriter has been permanently cached.
As Edward Grech points out, in a special case like this, the environment variable JAVA_TOOL_OPTIONS can be used to specify this property, but it's normally done like this:
java -Dfile.encod...
Difference between a user and a schema in Oracle?
...purposes.
SCOTT is a schema that includes the EMP, DEPT and BONUS tables with various grants, and
other stuff.
SYS is a schema that includes tons of tables, views, grants, etc etc etc.
SYSTEM is a schema.....
Technically -- A schema is the set of metadata (data dictionary) used by the database,...
What's the state of the art in email validation for Rails?
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With Rails 3.0 you can use a email validation without regexp using the Mail gem.
Here is my implementation (packaged as a gem).
share
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tag vs tag
...uired. In my experience, all
browsers will default to text/javascript if it is absent, but that
behaviour is not defined anywhere. While you can in theory leave it
out and assume it will be interpreted as JavaScript, it's invalid
HTML, so why not add it.
In HTML 5, the type attribute is...
Is there an ignore command for git like there is for svn?
I am a new user to git and I am starting a new project. I have a bunch of dot files that I would like to ignore. Is there an ignore command for git like there is for svn ?
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Using git, how do I ignore a file in one branch but have it committed in another branch?
... to Heroku . The source code tree includes a bunch of mp3 files (the website will be for a recording project I was heavily involved with).
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Read a text file using Node.js?
I need to pass in a text file in the terminal and then read the data from it, how can I do this?
5 Answers
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How to make a variadic macro (variable number of arguments)
I want to write a macro in C that accepts any number of parameters, not a specific number
5 Answers
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