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How to detect if a stored procedure already exists
I have to write a deployment script which will work if a stored procedure exists or does not exist. i.e. if it exists, then I need to alter it, otherwise create it.
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Passing HTML to template using Flask/Jinja2
... It's worth mentioning that you should be careful to avoid Cross-Site Scripting vulnerabilities when you do this, as you're disabling the templating library's built-in protections against it.
– Harry Cutts
Jul 3 '18 at 17:41
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Adding a new value to an existing ENUM Type
...re keeping all the old enums and adding new ones. Additionally our update script is transactional. Great post!
– Darin Peterson
Jul 16 '13 at 20:38
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Entity Framework 6 Code first Default value
...ort instances where a rollback is dropping more than one constraint. Your script would throw an error stating that @con was already declared. I created a private variable to hold a counter and simply increment it. I also changed the format of the drop constraint to more closely match what EF send...
Searching subversion history (full text)
...version repository history log messages without using 3'rd party tools and scripts.
svn log --search searches in author, date, log message text and list of changed paths.
See SVNBook | svn log command-line reference.
share...
Linux bash: Multiple variable assignment
...pointless, but I was using this technique to return multiple values from a script that I did care about the return status. I thought I would share my findings.
– Lee Netherton
Oct 22 '15 at 11:26
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How can I grep for a string that begins with a dash/hyphen?
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grep '\-X'
grep "\-X"
One way to try out how Bash passes arguments to a script/program is to create a .sh script that just echos all the arguments. I use a script called echo-args.sh to play with from time to time, all it contains is:
echo $*
I invoke it as:
bash echo-args.sh \-X
bash echo-ar...
How to output git log with the first line only?
... on purpose.
The first line of a commit message is meant to be a short description. If you cannot make it in a single line you can use several, but git considers everything before the first empty line to be the "short description". oneline prints the whole short description, so all your 3 rows.
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Suppress command line output
...2>&1
and all will be better.
That works because stdout is file descriptor 1, and stderr is file descriptor 2 by convention. (0 is stdin, incidentally.) The 2>&1 copies output file descriptor 2 from the new value of 1, which was just redirected to the null device.
This syntax is (lo...
What does ON [PRIMARY] mean?
I'm creating an SQL setup script and I'm using someone else's script as an example. Here's an example of the script:
4 Ans...