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SQL query for finding records where count > 1
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350
Use the HAVING clause and GROUP By the fields that make the row unique
The below will find
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An “and” operator for an “if” statement in Bash
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William PursellWilliam Pursell
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How do you remove the root CA certificate that fiddler installs
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Martijn Pieters♦
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answered Dec 13 '16 at 8:33
Eyal Ab...
How can I fix WebStorm warning “Unresolved function or method” for “require” (Firefox Add-on SDK)
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13 Answers
13
Active
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git switch branch without discarding local changes
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359
There are a bunch of different ways depending on how far along you are and which branch(es) yo...
How to convert a ruby hash object to JSON?
...though).
So, take a look here:
car = {:make => "bmw", :year => "2003"}
# => {:make=>"bmw", :year=>"2003"}
car.to_json
# NoMethodError: undefined method `to_json' for {:make=>"bmw", :year=>"2003"}:Hash
# from (irb):11
# from /usr/bin/irb:12:in `<main>'
require 'json'
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How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
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63
Best I can think of is:
template<class T, class... Tail>
auto make_array(T head, Tail... ...
@Basic(optional = false) vs @Column(nullable = false) in JPA
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39
@Xie Jilei: From book: Java persistence with hibernate 2007, p. 179: @Basic(optional = false) @Column(nullable = false) The @Basic annota...
How does database indexing work? [closed]
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3614
Why is it needed?
When data is stored on disk-based storage devices, it is stored as blocks ...
Remove blank lines with grep
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308
Try the following:
grep -v -e '^$' foo.txt
The -e option allows regex patterns for matching...