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Postgresql GROUP_CONCAT equivalent?
...starting point (version 8.4+ only):
SELECT id_field, array_agg(value_field1), array_agg(value_field2)
FROM data_table
GROUP BY id_field
array_agg returns an array, but you can CAST that to text and edit as needed (see clarifications, below).
Prior to version 8.4, you have to define it yourself p...
How does python numpy.where() work?
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answered Apr 12 '11 at 22:48
Joe KingtonJoe Kington
223k5858 gold badges528528 silver badges435435 bronze badges
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How do you tell if a string contains another string in POSIX sh?
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11 Answers
11
Active
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Find out if ListView is scrolled to the bottom?
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171
Edited:
Since I have been investigating in this particular subject in one of my applications,...
How to hash some string with sha256 in Java?
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15 Answers
15
Active
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Set value of hidden input with jquery
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130
You should use val instead of value.
<script type="text/javascript" language="javascript"&...
Aligning rotated xticklabels with their respective xticks
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xlabels = ['Ticklabel %i' % i for i in range(n)]
fig, axs = plt.subplots(1,3, figsize=(12,3))
ha = ['right', 'center', 'left']
for n, ax in enumerate(axs):
ax.plot(x,y, 'o-')
ax.set_title(ha[n])
ax.set_xticks(x)
ax.set_xticklabels(xlabels, rotation=40, ha=ha[n])
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Javascript Object push() function
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133
push() is for arrays, not objects, so use the right data structure.
var data = [];
// ...
dat...
How do I use Assert to verify that an exception has been thrown?
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answered Jun 1 '09 at 5:09
Kevin PullinKevin Pullin
12k33 gold badges2020 silver badges3232 bronze badges
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