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How to do a FULL OUTER JOIN in MySQL?
I want to do a Full Outer Join in MySQL. Is this possible? Is a Full Outer Join supported by MySQL?
15 Answers
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Java abstract interface
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Why is it necessary for an interface to be "declared" abstract?
It's not.
public abstract interface Interface {
\___.__/
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'----> Neither this...
public void interfacing();
public abstr...
Changing default encoding of Python?
... console. But in the Eclipse PyDev IDE, the default character encoding is set to UTF-8 , and I'm fine.
11 Answers
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What is causing “Unable to allocate memory for pool” in PHP?
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Probably is APC related.
For the people having this problem, please specify you .ini settings. Specifically your apc.mmap_file_mask setting.
For file-backed mmap, it should be set to something like:
apc.mmap_file_mask=/tmp/apc.XXX...
What is the difference between ExecuteScalar, ExecuteReader and ExecuteNonQuery?
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ExecuteScalar is typically used when your query returns a single value. If it returns more, then the result is the first column of the first row. An example might be SELECT @@IDENTITY AS 'Identity'.
ExecuteReader is used for any result se...
Accessing class variables from a list comprehension in the class definition
How do you access other class variables from a list comprehension within the class definition? The following works in Python 2 but fails in Python 3:
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Is it unnecessary to put super() in constructor?
Isn't this one automatically put by the compiler if I don't put it in a subclass's constructor?
6 Answers
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Why isn't SQL ANSI-92 standard better adopted over ANSI-89?
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edited Oct 29 '19 at 21:52
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What's the difference between => , ()=>, and Unit=>
...y-Name: => Type
The => Type notation stands for call-by-name, which is one of the many ways parameters can be passed. If you aren't familiar with them, I recommend taking some time to read that wikipedia article, even though nowadays it is mostly call-by-value and call-by-reference.
What it ...
How to differentiate single click event and double click event?
...ingle button in li with id "my_id" . I attached two jQuery events with this element
18 Answers
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