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PostgreSQL - fetch the row which has the Max value for a column
...a table with 158k pseudo-random rows (usr_id uniformly distributed between 0 and 10k, trans_id uniformly distributed between 0 and 30),
By query cost, below, I am referring to Postgres' cost based optimizer's cost estimate (with Postgres' default xxx_cost values), which is a weighed function estima...
Sorting an array of objects by property values
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30 Answers
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Maximum length of the textual representation of an IPv6 address?
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45 characters.
You might expect an address to be
0000:0000:0000:0000:0000:0000:0000:0000
8 * 4 + 7 = 39
8 groups of 4 digits with 7 : between them.
But if you have an IPv4-mapped IPv6 address, the last two groups can be written in base 10 separated by ., eg. [::ffff...
Go > operators
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180
The super (possibly over) simplified definition is just that << is used for "times 2" and ...
Why must jUnit's fixtureSetup be static?
...this + "\ttest3");
}
}
Which prints:
beforeClass
ExampleTest@3358fd70 before
ExampleTest@3358fd70 test1
ExampleTest@3358fd70 after
ExampleTest@6293068a before
ExampleTest@6293068a test2
ExampleTest@6293068a after
ExampleTest@22928095 before
ExampleTest@22928095 test3
E...
Remove the last character from a string [duplicate]
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You can use substr:
echo substr('a,b,c,d,e,', 0, -1);
# => 'a,b,c,d,e'
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How to create a directory using Ansible
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edited Dec 7 '18 at 18:03
answered Apr 3 '14 at 19:56
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How do I uninstall nodejs installed from pkg (Mac OS X)?
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10 Answers
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How to make an empty div take space
This is my 960 grid system case:
12 Answers
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