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What is cardinality in MySQL?
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Max cardinality: All values are unique
Min cardinality: All values are the same
Some columns ...
See my work log in jira
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edited Sep 6 '16 at 22:43
Nathron
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Check if list contains element that contains a string and get that element
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Create PostgreSQL ROLE (user) if it doesn't exist
...TABLE there is no IF NOT EXISTS clause for CREATE ROLE (up to at least pg 12). And you cannot execute dynamic DDL statements in plain SQL.
Your request to "avoid PL/pgSQL" is impossible except by using another PL. The DO statement uses plpgsql as default procedural language. The syntax allows to om...
How to set environment variables in Python?
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phoenix
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answered May 11 '11 at 22:27
Sven MarnachSven Ma...
How to compute the similarity between two text documents?
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array([[1. , 0.17668795, 0.27056873, 0. , 0. ],
[0.17668795, 1. , 0.15439436, 0. , 0. ],
[0.27056873, 0.15439436, 1. , 0.19635649, 0.16815247],
[0. , 0. , 0.19635649, 1. ...
In Git, what is the difference between origin/master vs origin master?
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You can merge multiple branches...
git merge origin/master hotfix-2275 hotfix-2276 hotfix-2290
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What is & used for
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answered Jan 31 '12 at 17:40
QuentinQuentin
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HttpListener Access Denied
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Håkon K. Olafsen
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answered Nov 6 '10 at 21:44
Darrel MillerDarrel Miller
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Ruby on Rails production log rotation
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Option 1: syslog + logrotate
You can configure rails, to use the systems log tools.
An exam...