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Oracle SQL: Update a table with data from another table
...ere is no matching row in t2. Without it, every row in t1 will be updated and the values will be set to NULL if there is no matching row in t2. That is generally not what you want to happen so the WHERE EXISTS is generally needed.
– Justin Cave
Aug 5 '13 at 1...
How to show SQL queries run in the Rails console?
... can I see the actual database queries being run so I can gain more understanding of what is happening?
6 Answers
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Getting MAC Address
...dress of a computer at run time. For windows the 'wmi' module can be used and the only method under Linux I could find was to run ifconfig and run a regex across its output. I don't like using a package that only works on one OS, and parsing the output of another program doesn't seem very elegant ...
“Invalid form control” only in Google Chrome
The code below works well in Safari but in Chrome and Firefox the form will not submit. Chrome console logs the error An invalid form control with name='' is not focusable . Any ideas?
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jQuery checkbox event handling
...</label><input id='myInput' name='myInput' type='checkbox'/> ) and you click the label, the checkbox will be checked, but this function would NOT be called. You should use the .change() event
– Patrick
Jul 2 '14 at 14:31
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Regular expression to search for Gadaffi
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Arabic transcription is (Wiki says) "Qaḏḏāfī", so maybe adding a Q. And one H ("Gadhafi", as the article (see below) mentions).
Btw, why is there a $ at the end of the regex?
Btw, nice article on the topic:
Gaddafi, Kadafi, or Qaddafi? Why is the Libyan leader’s name spelled so many di...
Shared-memory objects in multiprocessing
...r array), place that in shared memory, wrap it with multiprocessing.Array, and pass that to your functions. This answer shows how to do that.
If you want a writeable shared object, then you will need to wrap it with some kind of synchronization or locking. multiprocessing provides two methods of do...
How to prevent errno 32 broken pipe?
... client program doesn't wait till all the data from the server is received and simply closes a socket (using close function).
In a C program you would normally try setting to ignore SIGPIPE signal or setting a dummy signal handler for it. In this case a simple error will be returned when writing t...
JUnit test with dynamic number of tests
...ct I have several JUnit tests that e.g. take every file from a directory and run a test on it. If I implement a testEveryFileInDirectory method in the TestCase this shows up as only one test that may fail or succeed. But I am interested in the results on each individual file. How can I write a...
What is the difference between libsqlite3.dylib and libsqlite3.0.dylib?
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Thanks Jeff - I wasn't sure and didn't want to assume either way.
– earnshavian
Dec 2 '10 at 5:11
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