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How do I get the MIN() of two fields in Postgres?
...ST are not in the SQL standard, but are a common extension. Some other databases make them return NULL if any argument is NULL, rather than only when all are NULL...
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Is there a way to use two CSS3 box shadows on one element?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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PostgreSQL DISTINCT ON with different ORDER BY
...sed_at
ORDER BY t1.purchased_at DESC
A more PostgreSQL-oriented solution based on @hkf's answer:
SELECT * FROM (
SELECT DISTINCT ON (address_id) *
FROM purchases
WHERE product_id = 1
ORDER BY address_id, purchased_at DESC
) t
ORDER BY purchased_at DESC
Problem clarified, extended and s...
How to assert output with nosetest/unittest in python?
...rom StringIO import StringIO in Python 3. Here's a minimum working snippet based on @naxa's comment and the Python Cookbook.
from io import StringIO
from unittest.mock import patch
with patch('sys.stdout', new=StringIO()) as fakeOutput:
print('hello world')
self.assertEqual(fakeOutput.getv...
Select second last element with css
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Updating version numbers of modules in a multi-module Maven project
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It does, I use it. Sets the current project's version and based on that change propagates that change onto any child modules as necessary.
– Nishant
Sep 13 '17 at 17:53
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how to view the contents of a .pem certificate
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Is it possible to put CSS @media rules inline?
...h for the case where the background-image is dynamically pulled from a database. Obviously in the external stylesheet isn't the right place for that.
– Jake Wilson
Jun 4 '15 at 17:13
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Saving and Reading Bitmaps/Images from Internal memory in Android
...dded ImageSaver.setExternal(boolean) to support saving to external storage based on googles example.
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How to know the size of the string in bytes?
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