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Left align and right align within div in Bootstrap
What are some of the common ways to left align some text and right align some other text within a div container in bootstrap?
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How do I retrieve the number of columns in a Pandas data frame?
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done. @PhilCooper perhaps you could explain why df.shape is better? my guess is that it does not call a function but just reads the attribute from memory?
– mkln
Nov 30 '13 at 18:59
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How do I prevent a Gateway Timeout with FastCGI on Nginx
I am running Django, FastCGI, and Nginx. I am creating an api of sorts that where someone can send some data via XML which I will process and then return some status codes for each node that was sent over.
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How do write IF ELSE statement in a MySQL query
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You probably want to use a CASE expression.
They look like this:
SELECT col1, col2, (case when (action = 2 and state = 0)
THEN
1
ELSE
0
END)
as state from tbl1;
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sqlalchemy flush() and get inserted id?
... of sqlalchemy .6+, there is a very simple solution (I don't know if this exists in prior version, though I imagine it does):
session.refresh()
So, your code would look something like this:
f = Foo(bar=x)
session.add(f)
session.flush()
# At this point, the object f has been pushed to the DB,
# a...
Filtering a list based on a list of booleans
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>>> list(compress(list_a, fil))
[1, 4]
Timing comparisons(py3.x):
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>> %timeit list(compress(list_a, fil))
100000 loops, best of 3: 2.58 us per loop
>>> %timeit [i for (i, v) in zip(list_a...
How to import existing *.sql files in PostgreSQL 8.4?
...sql
Note that you may need to import the files in a specific order (for example: data definition before data manipulation). If you've got bash shell (GNU/Linux, Mac OS X, Cygwin) and the files may be imported in the alphabetical order, you may use this command:
for f in *.sql ; do psql -f $f ; d...
How to load program reading stdin and taking parameters in gdb?
...what to do beyond compiling with the -g option and running the command M-x gdb.
4 Answers
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How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?
...TE.
Quick explanation.
For usage see the manual - specifically the conflict_action clause in the syntax diagram, and the explanatory text.
Unlike the solutions for 9.4 and older that are given below, this feature works with multiple conflicting rows and it doesn't require exclusive locking or a retr...
How can I get maven-release-plugin to skip my tests?
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-Darguments="-DskipTests" is what you want, or explicitly configuring the forked executions in the pom.
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