Re: [HACKERS] Idea on how to simplify comparing two sets

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От Tom Lane
Тема Re: [HACKERS] Idea on how to simplify comparing two sets
Дата
Msg-id 15376.1486483121@sss.pgh.pa.us
обсуждение исходный текст
Ответ на [HACKERS] Idea on how to simplify comparing two sets  (Joel Jacobson <joel@trustly.com>)
Ответы Re: [HACKERS] Idea on how to simplify comparing two sets  (Joel Jacobson <joel@trustly.com>)
Re: [HACKERS] Idea on how to simplify comparing two sets  ("David G. Johnston" <david.g.johnston@gmail.com>)
Re: [HACKERS] Idea on how to simplify comparing two sets  (Pantelis Theodosiou <ypercube@gmail.com>)
Re: [HACKERS] Idea on how to simplify comparing two sets  (Nico Williams <nico@cryptonector.com>)
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Дерево обсуждения 
Joel Jacobson <joel@trustly.com> writes:
> Currently there is no simple way to check if two sets are equal.

Uh ... maybe check whether SELECT set1 EXCEPT SELECT set2
and SELECT set2 EXCEPT SELECT set1 are both empty?
        regards, tom lane

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