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MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?

...l server last time, so I'm afraid I can't try this right now. I'll have to set up a test database later. But I don't understand why this should affect the query. The HAVING statement should only apply to the query which it's within, shouldn't it? I really don't understand why the "real" query should...
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Getting the name of the currently executing method

... 180 Thread.currentThread().getStackTrace() will usually contain the method you’re calling it from ...
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Getting hold of the outer class object from the inner class object

...evel access - at least with the JDK I'm using. EDIT: The name used (this$0) is actually valid in Java, although the JLS discourages its use: The $ character should be used only in mechanically generated source code or, rarely, to access pre-existing names on legacy systems. ...
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What is “runtime”?

...it pointers. Why is it so when your OS is 32bit? Because your compiler has set up the execution environment of 16 bit and the 32-bit version of OS supported it. What is commonly called as JRE (Java Runtime Environment) provides a Java program with all the resources it may need to execute. Actually...
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Why dict.get(key) instead of dict[key]?

... 10 Answers 10 Active ...
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Java Desktop application: SWT vs. Swing [closed]

...ng) and eclipse (swt). Another nice framework could be griffon and a nice 'set of components' is pivot (swing). Griffon is very interesting because it integrates a lot of libraries and not only swing; also pivot, swt, etc sh...
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Making Python loggers output all messages to stdout in addition to log file

...e root logger: import logging import sys root = logging.getLogger() root.setLevel(logging.DEBUG) handler = logging.StreamHandler(sys.stdout) handler.setLevel(logging.DEBUG) formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s') handler.setFormatter(formatter) root.a...
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What are namespaces?

... answered Aug 2 '10 at 1:03 cbednarskicbednarski 10.7k33 gold badges2222 silver badges3333 bronze badges ...
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What's the maximum value for an int in PHP?

...P_INT_SIZE, and maximum value using the constant PHP_INT_MAX since PHP 4.4.0 and PHP 5.0.5. 64-bit platforms usually have a maximum value of about 9E18, except on Windows prior to PHP 7, where it was always 32 bit. share ...
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What does !! mean in ruby?

... John Topley 104k4343 gold badges186186 silver badges234234 bronze badges answered Feb 7 '09 at 22:05 Alex WayneAle...