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ALTER DATABASE failed because a lock could not be placed on database
I need to restart a database because some processes are not working. My plan is to take it offline and back online again.
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Is there a version control system for database structure changes?
...ails, there's a concept of a migration -- a quick script to change the database.
You generate a migration file, which has rules to increase the db version (such as adding a column) and rules to downgrade the version (such as removing a column). Each migration is numbered, and a table keeps track of...
Programmatically align a toolbar on top of the iPhone keyboard
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This is based on the existing answer from tonklon - I'm just adding a code snippet that shows a semi transparent black toolbar on top of the keyboard, together with a "done" button on the right:
UIToolbar *toolbar = [[[UIToolbar all...
How do I escape a single quote in SQL Server?
... generating dynamic SQL which was then ran across multiple servers and databases, this solution worked for me whereas the doubling didn't in one specific case. Thanks for this!
– Richard Moss
Jul 2 '15 at 12:12
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Recursively list files in Java
...E, TrueFileFilter.INSTANCE), where dir is a File object that points to the base directory.
– andronikus
Apr 27 '12 at 17:53
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Random number from a range in a Bash Script
... not a bash expert and were looking to get this into a variable in a Linux-based bash script, try this:
VAR=$(shuf -i 200-700 -n 1)
That gets you the range of 200 to 700 into $VAR, inclusive.
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Git's famous “ERROR: Permission to .git denied to user”
...e when you are using the git@github.com:... URLs it's identifying the user based on the SSH key. (That this shouldn't be allowed is confirmed here.)
So, I suspect (in decreasing order of likelihood) that one of the following is the case:
You created the mederot account previously and added your ...
Django MEDIA_URL and MEDIA_ROOT
...et First MEDIA_ROOT an MEDIA_URL in setting.py
MEDIA_ROOT = os.path.join(BASE_DIR, 'data/') # 'data' is my media folder
MEDIA_URL = '/media/'
Then Enable the media context_processors in TEMPLATE_CONTEXT_PROCESSORS by adding
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.Djang...
Can I change the height of an image in CSS :before/:after pseudo-elements?
...et different amounts of upvotes and will be seen/quoted/shared differently based on the contents of the answer.
– Timo Huovinen
Jul 19 '18 at 6:23
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Android 4.3 menu item showAsAction=“always” ignored
... that namespace as the attribute prefix. (A custom XML namespace should be based on your app name, but it can be any name you want and is only accessible within the scope of the file in which you declare it.)
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