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

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От Pantelis Theodosiou
Тема Re: [HACKERS] Idea on how to simplify comparing two sets
Дата
Msg-id CAE3TBxwnn51B2pz9rrHU1exgKbLqQZgE3Hs9npzjUC0yxAMdnQ@mail.gmail.com
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  (Robert Haas <robertmhaas@gmail.com>)
Список pgsql-hackers
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On Tue, Feb 7, 2017 at 3:13 PM, Joel Jacobson <joel@trustly.com> wrote:
 Hi hackers,

Currently there is no simple way to check if two sets are equal.

Looks like no RDBMS in the world has a simple command for it.

You have to do something like:

...

Introducing new SQL keywords is of course not an option,
since it would possibly break backwards compatibility.


I'm not advocating it but I don't see how introducing new SQL keywords breaks backwards compatibility.

Pantelis Theodosiou

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