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Who is “us” and who is “them” according to Git?
... What about when only one branch is involved, such as when re-ordering or squashing commits during a rebase?
– Justin Johnson
Sep 10 '16 at 0:55
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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...
PostgreSQL: Show tables in PostgreSQL
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psql my_db_name should be run in order \dt to work. When I ran psql without a database name, I got a "No relations found" message
– Maksim Dmitriev
Nov 19 '13 at 15:01
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How to use count and group by at the same select statement
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If you want to order by count (sound simple but i can`t found an answer on stack of how to do that) you can do:
SELECT town, count(town) as total FROM user
GROUP BY town ORDER BY total DESC
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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...
Is the LIKE operator case-sensitive with MSSQL Server?
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You have an option to define collation order at the time of defining your table. If you define a case-sensitive order, your LIKE operator will behave in a case-sensitive way; if you define a case-insensitive collation order, the LIKE operator will ignore character...
IntelliJ Organize Imports
...mport" as described by Dave.
You can also modify how the imports are auto-ordered under "Settings → Editor → Code Style → Java → Imports"
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How to use sidebar with the keyboard in Sublime Text 2 and 3?
...trl + b will show/hide the sidebar. Make sure you hit K and B in the right order
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How do I tell Maven to use the latest version of a dependency?
...he
child modules. (Note you may need to
invoke Maven with the -N option in
order to run this goal if your
project is broken so badly that it
cannot build because of the version
mis-match).
versions:lock-snapshots searches the pom for all -SNAPSHOT
versions and replaces them with the
current timestam...
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 ...