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Difference between a theta join, equijoin and natural join
I'm having trouble understanding relational algebra when it comes to theta joins, equijoins and natural joins. Could someone please help me better understand it? If I use the = sign on a theta join is it exactly the same as just using a natural join?
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Make $JAVA_HOME easily changable in Ubuntu [closed]
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This will probably solve your problem:
https://help.ubuntu.com/community/EnvironmentVariables
Session-wide environment variables
In order to set environment variables in a way that affects a particular user's environment, one should not place commands t...
Android NDK C++ JNI (no implementation found for native…)
...at the lib is getting pulled in successfully.
You already dodged the most common problem -- forgetting to use extern "C" -- so it's either the above or some slight misspelling. What does the Java declaration look like?
sha...
How to retrieve GET parameters from javascript? [duplicate]
...params = getSearchParameters();
You can then get the test parameter from http://myurl.com/?test=1 by calling params.test.
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libpthread.so.0: error adding symbols: DSO missing from command line
...ntu Saucy:
/usr/bin/ld: /mnt/root/ffmpeg-2.1.1//libavformat/libavformat.a(http.o): undefined reference to symbol 'inflateInit2_'
/lib/x86_64-linux-gnu/libz.so.1: error adding symbols: DSO missing from command line
Ubuntu Raring: (more informative)
/usr/bin/ld: note: 'uncompress' is defined in DS...
How to create module-wide variables in Python? [duplicate]
...nt to indicate that a variable should be considered private. stackoverflow.com/questions/6930144/…
– H.Rabiee
Jul 30 '17 at 11:45
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Is there a way to get the source code from an APK file?
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Simple way: use online tool http://www.javadecompilers.com/apk, upload apk and get source code.
Procedure for decoding .apk files, step-by-step method:
Step 1:
Make a new folder and copy over the .apk file that you want to decode.
Now rename the exte...
Python function global variables?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How to get the current date/time in Java [duplicate]
...dar.getInstance();
System.out.println(dateFormat.format(cal.getTime()));
http://www.mkyong.com/java/java-how-to-get-current-date-time-date-and-calender/
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How to select multiple files with ?
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