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SQL select only rows with max value on a column [duplicate]

... 27 Answers 27 Active ...
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Match linebreaks - \n or \r\n?

... 231 Gonna answer in opposite direction. 2) For a full explanation about \r and \n I have to refer...
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Input and output numpy arrays to h5py

... using h5py reduces the file size considerably. So, let's say I have the 2D numpy array named A . How do I save it to an h5py file? Also, how do I read the same file and put it as a numpy array in a different code, as I need to do manipulations with the array? ...
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Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?

... | edited May 23 '17 at 12:02 Community♦ 111 silver badge answered Aug 8 '09 at 19:09 ...
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Superiority of unnamed namespace over static?

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How do you make lettered lists using markdown?

... Andrew Mascillaro 3691212 bronze badges answered Mar 15 '13 at 0:01 creativecodercreativecoder 1,191...
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String slugification in Python

... the source, it's just one file). The project is still active (got updated 2 days before I originally answered, over seven years later (last checked 2020-06-30), it still gets updated). careful: There is a second package around, named slugify. If you have both of them, you might get a problem, as th...
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What does a tilde do when it precedes an expression?

... 273 ~ is a bitwise operator that flips all bits in its operand. For example, if your number was 1...
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rails 3 validation on uniqueness on multiple attributes

... In Rails 2, I would have written: validates_uniqueness_of :zipcode, :scope => :recorded_at In Rails 3: validates :zipcode, :uniqueness => {:scope => :recorded_at} For multiple attributes: validates :zipcode, :uniquenes...
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Is there a better way to find out if a local git branch exists?

... | edited Jun 12 '17 at 13:32 kaligne 2,14644 gold badges2727 silver badges5050 bronze badges ...