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Postgres: Distinct but only for one column
...ame. If you want to control which of the rows will be returned you need to order:
select distinct on (name)
name, col1, col2
from names
order by name, col1
Will return the first row when ordered by col1.
distinct on:
SELECT DISTINCT ON ( expression [, ...] ) keeps only the first row of each se...
How to put an image in div with CSS?
... there's another solution programatically, like getting the image size via PHP getimagesize and then echo a corresponding style and or img tag for that certain image.
– JudeJitsu
May 31 '12 at 8:25
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std::next_permutation Implementation Explanation
...nd the permutations as numbers. Viewing the problem in this way we want to order the permutations/numbers in "ascending" order.
When we order numbers we want to "increase them by the smallest amount". For example when counting we don't count 1, 2, 3, 10, ... because there are still 4, 5, ... in bet...
What characters are valid for JavaScript variable names?
...s vary, but you’ll safely have 1000 characters and probably several more orders of magnitude than that.)
Links to the character categories:
Letters: Lu, Ll, Lt, Lm, Lo, Nl(combined in the regex above as “L”)
Combining marks (“modifiers”): Mn, Mc
Digits: Nd
Connectors: Pc
*n.b. This ...
Unable to update the EntitySet - because it has a DefiningQuery and no element exis
...really weird issue. Is there any information on how this problem occurs in order to avoid it? Nonetheless - it helped
– r3dst0rm
Jan 24 '18 at 9:56
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How do I connect to a MySQL Database in Python?
...1 - Setting
You must install a MySQL driver before doing anything. Unlike PHP, Only the SQLite driver is installed by default with Python. The most used package to do so is MySQLdb but it's hard to install it using easy_install. Please note MySQLdb only supports Python 2.
For Windows user, you can...
How can you use optional parameters in C#?
...rameters by their names, and of course you can pass parameters in whatever order you want :)
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Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
...l attempt and the following answer is no longer necessary.
You can use DT[order(-rank(x), y)].
x y v
1: c 1 7
2: c 3 8
3: c 6 9
4: b 1 1
5: b 3 2
6: b 6 3
7: a 1 4
8: a 3 5
9: a 6 6
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Overriding a JavaScript function while referencing the original
...at I want to override, but also have the original a() be performed in an order depending on the context. For example, sometimes when I'm generating a page I'll want to override like this:
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Save An Image To Application Documents Folder From UIView On IOS
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