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Kill a postgresql session/connection
... pg_backend_pid()
-- don't kill the connections to other databases
AND datname = 'database_name'
;
Before executing this query, you have to REVOKE the CONNECT privileges to avoid new connections:
REVOKE CONNECT ON DATABASE dbname FROM PUBLIC, username;
If you're using Postgres 8....
How do I properly clean up Excel interop objects?
I'm using the Excel interop in C# ( ApplicationClass ) and have placed the following code in my finally clause:
41 Answers
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Display current date and time without punctuation
For example, I want to display current date and time as the following format:
5 Answers
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A simple explanation of Naive Bayes Classification
I am finding it hard to understand the process of Naive Bayes, and I was wondering if someone could explain it with a simple step by step process in English. I understand it takes comparisons by times occurred as a probability, but I have no idea how the training data is related to the actual datase...
Multiprocessing: How to use Pool.map on a function defined in a class?
...s: I tried using parmap on some functions that passed around a defaultdict and got the PicklingError again. I did not figure out a solution to this, I just reworked my code to not use the defaultdict.
– sans
Jul 8 '11 at 23:41
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MySQL Error 1153 - Got a packet bigger than 'max_allowed_packet' bytes
I'm importing a MySQL dump and getting the following error.
14 Answers
14
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How to leave/exit/deactivate a Python virtualenv
I'm using virtualenv and the virtualenvwrapper. I can switch between virtualenv's just fine using the workon command.
13...
Listing all extras of an Intent
For debugging reasons I want to list all extras (and their values) of an Intent. Now, getting the keys isn't a problem
12 A...
HTTP URL Address Encoding in Java
My Java standalone application gets a URL (which points to a file) from the user and I need to hit it and download it. The problem I am facing is that I am not able to encode the HTTP URL address properly...
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How can I check if a program exists from a Bash script?
... validate that a program exists, in a way that will either return an error and exit, or continue with the script?
37 Answer...