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MySQL: Insert record if not exists in table
...-----+
And so on...
Update:
To prevent #1060 - Duplicate column name error in case two values may equal, you must name the columns of the inner SELECT:
INSERT INTO table_listnames (name, address, tele)
SELECT * FROM (SELECT 'Unknown' AS name, 'Unknown' AS address, '022' AS tele) AS tmp
WHERE ...
Should Gemfile.lock be included in .gitignore?
...ock, the next dude to install the project might see all kinds of confusing errors, blaming himself, but he was just that lucky guy getting the next version of super gem, breaking existing dependencies.
Worse, this happened on the servers, getting untested version unless being disciplined and instal...
Piping command output to tee but also save exit code of command [duplicate]
...=`mktemp`
(mvn clean install $@; echo $?>$f) | tee $logfile
e=`cat $f` #error in variable e
rm $f
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GCC compile error with >2 GB of code
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The error occurs because you have too much CODE, not data! This is indicated by for example __libc_csu_fini (which is a function) being referenced from _start and the relocation is truncated to fit. This means that _start (the pr...
What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?
What is the difference between NoClassDefFoundError and ClassNotFoundException ?
15 Answers
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How do I manage MongoDB connections in a Node.js web application?
....then(() => bootMyApplication())
.catch((e) => {
console.error(e);
// Always hard exit on a database connection error
process.exit(1);
});
When in flight your app can simply call get() when it needs a DB connection.
const db = require('./myAwesomeDbModule');
...
What's the best way to validate an XML file against an XSD file?
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How do i use an ErrorHandler with the above? Is is a case of just creating the ErrorHandler and associating it with the validator? i.e. validator.SetErrorHandler() as in the example in this SO question stackoverflow.com/questions/4864681/…...
Shell Script: Execute a python program from within a shell script
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I'm trying to do this in automator, and I'm getting an error; /path/to/Python: can't open file '/path/to/script': [Errno 1] Operation not permitted is there a way to include my python code in-line within the bash script?
– Keyslinger
Apr 16 ...
How to create a css rule for all elements except one class?
I have created a CSS stylesheet for my project. Is there any way I can create a css rule that applies to all table elements EXCEPT table elements belonging to the class "dojoxGrid"? Something like:
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AI2 Media Notification
...data and appearance ProgressBar (since Android 10, API Level 29) How to Error handling Reference Properties Methods Events Example The user interface Controls Options Implementation hints Build the Extension Providing the libraries Copy the libraries Declarations Pacht the .aix file...