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Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...:
SET @rUsername = ‘aname’ COLLATE utf8_unicode_ci; -- COLLATE added
CALL updateProductUsers(@rUsername, @rProductID, @rPerm);
Option 2: add COLLATE to the WHERE clause:
CREATE PROCEDURE updateProductUsers(
IN rUsername VARCHAR(24),
IN rProductID INT UNSIGNED,
IN rPerm VARCHAR(16...
Failed to install Python Cryptography package with PIP and setup.py
When I try to install the Cryptography package for Python through either pip install cryptography or by downloading the package from their site and running python setup.py , I get the following error:
...
What characters are allowed in an email address?
... not appear consecutively unless quoted (e.g. John..Doe@example.com is not allowed but "John..Doe"@example.com is allowed);
space and "(),:;<>@[\] characters are allowed with restrictions (they are only allowed inside a quoted string, as described in the paragraph below, and in addition, a b...
How to schedule a function to run every hour on Flask?
...om apscheduler.schedulers.background import BackgroundScheduler
def print_date_time():
print(time.strftime("%A, %d. %B %Y %I:%M:%S %p"))
scheduler = BackgroundScheduler()
scheduler.add_job(func=print_date_time, trigger="interval", seconds=3)
scheduler.start()
# Shut down the scheduler when ...
How do I keep Python print from adding newlines or spaces? [duplicate]
...ys.stdout.flush()
sys.stdout.write('m')
sys.stdout.flush()
You need to call sys.stdout.flush() because otherwise it will hold the text in a buffer and you won't see it.
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Exclude a directory from git diff
...t diff previous_release current_release !(spec)
Saves you having to list all other things.
Or, shell-agnostic:
git diff previous_release current_release --name-only | grep -v '^spec/' \
| xargs git diff previous_release current_release --
You could wrap that up in a one-liner shell script ...
How can we match a^n b^n with Java regex?
...tion (?=…).
Here is our pattern with a simple test harness:
function testAll($r, $tests) {
foreach ($tests as $test) {
$isMatch = preg_match($r, $test, $groups);
$groupsJoined = join('|', $groups);
print("$test $isMatch $groupsJoined\n");
}
}
$tests = array('aaa', 'aaab',...
Best way to test for a variable's existence in PHP; isset() is clearly broken
... This looks a bit ugly to me, but in the case where you're actually checking an array element, it makes much more sense: isset($foo[$bar]) becomes array_key_exists($bar, $foo)
– Arild
Aug 25 '14 at 14:12
...
How to check Django version
...application. So I have two versions of Python, 2.6 and 2.7. Now I have installed Django. I could run the sample application for testing Django succesfuly. But how do I make sure whether Django uses the 2.6 or 2.7 version and what version of modules Django uses?
...
Execute method on startup in Spring
...n and it executes just after the startup, but then it will execute periodically.
13 Answers
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