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Fast way to discover the row count of a table in PostgreSQL
...class
WHERE oid = 'myschema.mytable'::regclass;
Faster, simpler, safer, more elegant. See the manual on Object Identifier Types.
Use to_regclass('myschema.mytable') in Postgres 9.4+ to avoid exceptions for invalid table names:
How to check if a table exists in a given schema
TABLESAMPLE SY...
What is the difference between '/' and '//' when used for division?
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Remove last character of a StringBuilder?
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What is the difference between ManualResetEvent and AutoResetEvent in .NET?
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What is a .pid file and what does it contain?
... main process number to a pid file - which is a regular text file, nothing more than that - and later use the information there contained to stop itself. You can also use that information to kill the process yourself, using cat filename.pid | xargs kill
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Mac OS X - EnvironmentError: mysql_config not found
...tor-python', it can be installed using pip install mysql-connector-python. More information on this can be found here and here.
Manually find the location of 'mysql/bin', 'mysql_config', and 'MySQL-Python', and add all these to the $PATH environment variable.
If all above steps fail, then you could ...
Adjusting the Xcode iPhone simulator scale and size [duplicate]
... But in the smaller screens(MacBook Pro 15-Inch), I can't scale it more than the screen size sometimes if I want to see the UI elements more clearly. It's a kind of disadvantage in Xcode 9.
– Ashok
Sep 21 '17 at 11:03
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Use of Initializers vs Constructors in Java
... I don't quite like your specific example because it's much more suited for implementation as an enum.
– JAB
Jun 7 '13 at 13:10
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Vertically centering Bootstrap modal window
...g on this). Anyway I'm going back to the javascript answer so I don't lose more time on this. But like I said, this appears to work fine, just warning people doing e2e tests with protractor to watch out.
– pcatre
Oct 17 '14 at 9:52
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Call a function from another file?
... Can I include the filepath preceeding the filename, or is there something more complicated?
– Tom
Apr 27 '16 at 1:14
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