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Generate GUID in MySQL for existing Data?

...her solution that doesn't use triggers, but requires primary key or unique index : UPDATE YourTable, INNER JOIN (SELECT unique_col, UUID() as new_id FROM YourTable) new_data ON (new_data.unique_col = YourTable.unique_col) SET guid_column = new_data.new_id UPDATE once again: It seems that your or...
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How to implement the activity stream in a social network

...hat the activity relates to a book (type) with a given primary key (id) I index on (user_id, time) and query for activities that are user_id IN (...friends...) AND time > some-cutoff-point. Ditching the id and choosing a different clustered index might be a good idea - I haven't experimented wi...
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How to add Google Analytics Tracking ID to GitHub Pages

... https://github.com/YourUserName/YourRepository/tree/gh-pages ) Then edit index.html from listed files Now in within HEAD tag of index.html - paste your Google Analytics Tracking ID Script ( if have already signed up for Google analytics then you can browse it under admin and then tracking info tab...
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Can't pickle when using multiprocessing Pool.map()

...f __del__(self): print "... Destructor" def process_obj(self, index): print "object %d" % index return "results" pickle(MethodType, _pickle_method, _unpickle_method) Myclass(nobj=8, workers=3) # problem !!! the destructor is called nobj times (instead of once) Output:...
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Representing Directory & File Structure in Markdown Syntax [closed]

...rcamp-boston-4-roundup.textile +-- _data | +-- members.yml +-- _site +-- index.html Which is similar to the format tree uses if you select ANSI output. share | improve this answer | ...
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No submodule mapping found in .gitmodule for a path that's not a submodule

...e git rm command which is advised is for removing the special entry in the index indicating a submodule (a 'folder' with a special mode 160000). If that special entry path isn't referenced in the .gitmodule (like 'Classes/Support/Three20' in the original question), then you need to remove it, in ...
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Removing the fragment identifier from AngularJS urls (# symbol)

... I needed to put <base href="/" /> in my index.html <head> section. – nyxz Dec 18 '15 at 13:51  |  sho...
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Pointers in Python?

...e same value This is feasible, because it involves decorated names and indexing -- i.e., completely different constructs from the barenames a and b that you're asking about, and for with your request is utterly impossible. Why ask for something impossible and totally different from the (possibl...
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MySQL high CPU usage [closed]

...log and most of the queries came from two table and the tables hadn't been indexed properly! it's only been about 10 minutes but here's the result: CPU load averages 0.48 (1 min) 0.95 (5 mins) 2.42 (15 mins) thanks very much – Juddling Aug 15 '09 at 18:16 ...
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Android List Preferences: have summary as selected value?

... // set first value by default listPreference.setValueIndex(0); } listPreference.setSummary(listPreference.getValue().toString()); listPreference.setOnPreferenceChangeListener(new OnPreferenceChangeListener() { @Override public boo...