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SQLAlchemy ORDER BY DESCENDING?
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from sqlalchemy import desc
someselect.order_by(desc(table1.mycol))
Usage from @jpmc26
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Concat all strings inside a List using LINQ
....Boo);
Console.ReadKey();
}
}
And here is my best :)
items.Select(i => i.Boo).Aggregate((i, j) => i + delimiter + j)
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Should operator
...ment for making these free standing functions as this lets auto conversion convert both sides if they are not the same type, while member functions only allow the rhs to be auto converted. I find this a paper man argument as you don't really want auto conversion happening in the first place (usually...
Get PostGIS version
...s like GEOS and proj4 you might want to get their versions too. Then use:
SELECT PostGIS_full_version();
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How to optimize for-comprehensions and loops in Scala?
...t tail-recursive functions are also as fast as while loops (since both are converted to very similar or identical bytecode).
– Rex Kerr
May 27 '11 at 2:03
7
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Block commenting in Ruby
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In TextMate, you can alt-drag vertically to select a column of text. This will duplicate the insertion point across all the lines you select, so you can insert or delete multiple #s at once.
UPDATE: Also in TextMate, assuming you have the right language selected, Cmd ...
Case conventions on element names?
...inent examples:
<a>1</a><b>1</b>
<xsl:value-of select="a+b"/>
outputs 2, as expected
<a>1</a><b>1</b>
<xsl:value-of select="a-b"/>
DOES NOT ERROR, BUT OUTPUTS NOTHING AT ALL
In the above code, you must put at least one space before a su...
How do I use cascade delete with SQL Server?
...elete" to an existing foreign key in SQL Server Management Studio:
First, select your Foreign Key, and open it's "DROP and Create To.." in a new Query window.
Then, just add ON DELETE CASCADE to the ADD CONSTRAINT command:
And hit the "Execute" button to run this query.
By the way, to get a l...
How to set up tmux so that it starts up with specified windows opened?
...witching either back using last-pane, or in more complex windows, with the select-pane -t 1 where 1 is the number of the pane in order created starting with 0.
tmux new-session \; \
send-keys 'tail -f /var/log/monitor.log' C-m \; \
split-window -v \; \
split-window -h \; \
send-keys 'top' C...
Calendar Recurring/Repeating Events - Best Storage Method
... grabbing the events for the day it's at, the query would look like this:
SELECT EV.*
FROM `events` EV
RIGHT JOIN `events_meta` EM1 ON EM1.`event_id` = EV.`id`
RIGHT JOIN `events_meta` EM2 ON EM2.`meta_key` = CONCAT( 'repeat_interval_', EM1.`id` )
WHERE EM1.meta_key = 'repeat_start'
AND (
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