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help / color / mirror / Atom feedFrom: Tom Lane <[email protected]>
To: Jian He <[email protected]>
Cc: [email protected]
Subject: Re: Fwd: range of composite types!
Date: Wed, 27 Apr 2022 01:26:00 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAMV54g228Aph5ZcVRPWo4C4rRGD_bgBdcAg+SztCaE1hsmpCvQ@mail.gmail.com>
References: <CAMV54g0Goi140BvjvVoGK3ZHqo0hAgqr8vBBVpa0aii7RJxKhw@mail.gmail.com>
<CAMV54g228Aph5ZcVRPWo4C4rRGD_bgBdcAg+SztCaE1hsmpCvQ@mail.gmail.com>
Jian He <[email protected]> writes:
>> for that means the following sql queries should return* false:*
>> select mytyperange (
>> (1,'2022-01-01')::mytype,
>> (8, '2022-01-31')::mytype, '[]') @> (2, '2020-01-19')::mytype;
Why should that return false? The comparison rules for composites
say that you compare the first column, only if that's equal
compare the second, etc. Here, "2" is between "1" and "8" so
the contents of the second column don't matter.
regards, tom lane
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Subject: Re: Fwd: range of composite types!
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