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PostgreSQL: Difference between text and varchar (character varying)
...array).
Check this article from Depesz: http://www.depesz.com/index.php/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/
A couple of highlights:
To sum it all up:
char(n) – takes too much space when dealing with values shorter than n (pads them to n), and can lead to subtle errors be...
How to check BLAS/LAPACK linkage in NumPy and SciPy?
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Demi-Lune
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answered Oct 13 '13 at 21:01
davostdavost
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How to put spacing between TBODY elements
...content.
– Rolf Rander
Jan 6 '09 at 10:08
12
Downvote all you want, but this is the only solution...
How do I create an array of strings in C?
... mpenmpen
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How to specify a multi-line shell variable?
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answered Mar 15 '13 at 10:04
dogbanedogbane
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How to take screenshot of a div with JavaScript?
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10 Answers
10
Active
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mongodb count num of distinct values per field/key
...{ $gte: 2 }
}
},
{ $sort : { count : -1} },
{ $limit : 100 }
]);
that give result such as
{ "_id" : "inflammation", "count" : 765 }
{ "_id" : "obesity", "count" : 641 }
{ "_id" : "epidemiology", "count" : 617 }
{ "_id" : "cancer", "count" : 604 }
{ "_id" : "breast cancer", "co...
See “real” commit date in github (hour/day)
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answered Dec 10 '13 at 16:55
Matt S.Matt S.
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Which characters are valid/invalid in a JSON key name?
...anaArun Rana
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5
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PostgreSQL DISTINCT ON with different ORDER BY
...ed the query.
– Gajus
Apr 29 '17 at 10:18
@Gajus: Short explanation: it doesn't work, only returns distinct address_id...