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Using column alias in WHERE clause of MySQL query produces an error
...an only use column aliases in GROUP BY, ORDER BY, or HAVING clauses.
Standard SQL doesn't allow you to
refer to a column alias in a WHERE
clause. This restriction is imposed
because when the WHERE code is
executed, the column value may not yet
be determined.
Copied from MySQL documen...
Changing every value in a hash in Ruby
I want to change every value in a hash so as to add '%' before and after the value so
11 Answers
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Git on Bitbucket: Always asked for password, even after uploading my public SSH key
...ollowing:
open your config file in your current repo ..
vim .git/config
and change the line with the url from
[remote "origin"]
fetch = +refs/heads/*:refs/remotes/origin/*
url = https://Nicolas_Raoul@bitbucket.org/Nicolas_Raoul/therepo.git
to
[remote "origin"]
fetch =...
DistutilsOptionError: must supply either home or prefix/exec-prefix — not both
...
Are you using OS X and Homebrew? The Homebrew python page https://github.com/Homebrew/brew/blob/master/docs/Homebrew-and-Python.md calls out a known issue with pip and a work around.
Worked for me.
You can make this "empty prefix" the def...
Extracting just Month and Year separately from Pandas Datetime column
...
If you want new columns showing year and month separately you can do this:
df['year'] = pd.DatetimeIndex(df['ArrivalDate']).year
df['month'] = pd.DatetimeIndex(df['ArrivalDate']).month
or...
df['year'] = df['ArrivalDate'].dt.year
df['month'] = df['ArrivalDat...
How can I calculate the number of lines changed between two commits in git?
...rather than specifying commit ranges, just select commits since last week) and --no-merges (merge commits don't actually introduce changes), as well as the pretty output options (--pretty=oneline, short, medium, full...).
Here's a one-liner to get total changes instead of per-commit changes from gi...
How can I pass data from Flask to JavaScript in a template?
...t;
</body>
</html>
You can also use for loops, if statements and many more, see the Jinja2 documentation for more.
Also, have a look at Ford's answer who points out the tojson filter which is an addition to Jinja2's standard set of filters.
Edit Nov 2018: tojson is now included in ...
Change font size macvim?
I'm using macvim and I love it. I also happen to really like the default font.
7 Answers
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How to randomize two ArrayLists in the same fashion?
I have two arraylist filelist and imgList which related to each other, e.g. "H1.txt" related to "e1.jpg". How to automatically randomized the list of imgList according to the randomization of fileList ? Like in excel, if we sort certain column, the other column will automatically follow?
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CABasicAnimation resets to initial value after animation completes
I am rotating a CALayer and trying to stop it at its final position after animation is completed.
15 Answers
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