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Why are joins bad when considering scalability?

... and potentially pre-indexed. Table partitions (helps with large data sets by spreading the load out to multiple disks, or limiting what might have been a table scan down to a partition scan) OLAP (pre-computes results of certain kinds of queries/joins. It's not quite true, but you can think of this...
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Are Databases and Functional Programming at odds?

... You should look at the paper "Out of the Tar Pit" by Ben Moseley and Peter Marks, available here: "Out of the Tar Pit" (Feb. 6, 2006) It is a modern classic which details a programming paradigm/system called Functional-Relational Programming. While not directly relating to ...
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What's the advantage of Logic-less template (such as mustache)?

...der, since you had your code scattered. If you prevent logic in templates by design (like mustache does), you will be obliged to put the logic elsewhere, so your templates will end up uncluttered. Another advantage is that you are forced to think in terms of separation of concerns: your controller...
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How to scale down a range of numbers with a known min and max value

... and the size of the original range. So really we are first translating x by -min, scaling it to the correct factor, and then translating it back up to the new minimum value of a. Hope this helps. share | ...
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Cron and virtualenv

... You should be able to do this by using the python in your virtual environment: /home/my/virtual/bin/python /home/my/project/manage.py command arg EDIT: If your django project isn't in the PYTHONPATH, then you'll need to switch to the right directory: ...
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Which is the fastest algorithm to find prime numbers?

...ing ranges for SoA than for SoE, but that gain is usually more than offset by the increased complexity and the extra constant factor overhead of this computational complexity such that for practical applications the SoE is better. – GordonBGood Mar 20 '14 at 2:...
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How to determine if object is in array [duplicate]

...still a different object. As mentioned in the comments, objects are passed by reference in JS and the same object can exist multiple times in multiple structures. If you want to create a new object and check if the array contains objects identical to your new one, this answer won't work (Julien's fi...
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How to remove all rows in a numpy.ndarray that contain non-numeric values

...in a dataset as a numpy.ndarray and some of the values are missing (either by just not being there, being NaN , or by being a string written " NA "). ...
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How to move a model between two Django apps (Django 1.7)

... @tomcounsell great comment, I would assume by adding a specific through model only for the purpose of migrations. Great deal of work required to leave data intact... – Wtower Jun 19 '17 at 11:25 ...
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How to write UPDATE SQL with Table alias in SQL Server 2008?

...nswered Feb 13 '11 at 0:07 Mark ByersMark Byers 683k155155 gold badges14681468 silver badges13881388 bronze badges ...