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Export specific rows from a PostgreSQL table as INSERT SQL script
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Take care that the order of the columns you SELECT matches the order of the columns in the destination database. If it doesn't, this could fail, or worse, succeed but insert bad data.
– Nathan Wallace
Jul ...
How does this code generate the map of India?
... character. In the second, decimal 33 is ASCII for '!'. Toggling the low-order bit of 33 gives you 32, which is ASCII for a space. This causes ! to be printed if b is odd, and a blank space to be printed if b is even. The rest of the code is simply there to walk the "pointer" a through the strin...
What is the optimal Jewish toenail cutting algorithm?
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The obvious: Find one order that works, and hard code it. But I don't think you want to do that.
You can generate permutations much better than the way you are doing it. You don't need to do rejection sampling. Use a Fisher Yates shuffle on an...
Difference between natural join and inner join
...ls, etc. SQL doesn't treat tables as relations because it relies on column ordering etc.
The idea behind NATURAL JOIN in SQL is to make it easier to be more faithful to the relational model. The result of the NATURAL JOIN of two tables will have columns de-duplicated by name, hence no anonymous col...
Does Python optimize tail recursion?
...on't need such a feature, I am very happy
with the code above. However, in order to provide a more general module, I thought
a little more in order to find some workaround for this issue (see next section).
Concerning the speed of this process (which isn't the real issue however), it happens
to be ...
Are Mutexes needed in javascript?
... to a DB to get some values. Quickly typing data can easily lead to out-of-order results.
– thomasb
Nov 17 '17 at 16:15
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Shards and replicas in Elasticsearch
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An index is broken into shards in order to distribute them and scale.
Replicas are copies of the shards and provide reliability if a node is lost. There is often confusion in this number because replica count == 1 means the cluster must have the main and a ...
Error starting jboss server
... JBoss config is relying on reflection to return constructors in a certain order, and in some cases this order is different, causing the exception. Did you change your JRE version when you reinstalled, say from 1.6.0_17 to _18?
Anyway, the workaround is described in the JIRA issue, and also here. ...
Error when installing windows SDK 7.1
...ll the newer version
of the Visual C++ 2010 Redistributable products, in order to restore
the Visual C++ 2010 Redistributable products to their original state.
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How do you maintain development code and production code? [closed]
...here you merge only feature branch to dev, then if selected, to master, in order to be able to drop easily feature branches not ready for the next release) is implemented in the Git repo itself, with the gitworkflow (one word, illustrated here).
See more at rocketraman/gitworkflow. The history of do...