Re: Search content within a bytea field
От
Sylvain Leroux
Тема
Re: Search content within a bytea field
Дата
Msg-id
4A9B7E09.1000300@wanadoo.fr
Ответ на
Re: Search content within a bytea field (Tom Lane)
Список
Дерево обсуждения
Search content within a bytea field Damiano Bolzoni <damiano.bolzoni@gmail.com>
Re: Search content within a bytea field Sylvain Leroux <sl20@wanadoo.fr>
Re: Search content within a bytea field Tom Lane <tgl@sss.pgh.pa.us>
Re: Search content within a bytea field Sylvain Leroux <sl20@wanadoo.fr>
Re: Search content within a bytea field Damiano Bolzoni <damiano.bolzoni@gmail.com>
Re: Search content within a bytea field Damiano Bolzoni <damiano.bolzoni@gmail.com>
Re: Search content within a bytea field Tom Lane <tgl@sss.pgh.pa.us>
Re: Search content within a bytea field Florian Weimer <fweimer@bfk.de>
Re: Search content within a bytea field Kris Jurka <books@ejurka.com>
Re: Search content within a bytea field Florian Weimer <fweimer@bfk.de>
Re: Search content within a bytea field Kris Jurka <books@ejurka.com>
Re: Search content within a bytea field Thomas Kellerer <spam_eater@gmx.net>
Re: Search content within a bytea field dmp <danap@ttc-cmc.net>
Hi, And sorry for that: Tom Lane a écrit : > Sylvain Leroux writes: >> It seems to me that the problem is comming from the BYTEA type, not from >> the prepared statement by itself: As far as I know the only operator >> supported by BYTEA is concatenation. You can't even compare two BYTEA >> for (in)equality - even less using the LIKE operator. > > Nonsense ... But I was quite sure to have read that somewhere -- and indeed: (in "PostgreSQL - second edition / ISBN:978-0-672-32756-8) "PostgreSQL offers a single BYTEA operator: concatenation. [...] Note that you can't compare two BYTEA values, even for equality/inequality. You can of course convert a BYTEA value into another value using CAST() operator, and that opens up other operators." I remember having found that annoying at the time - that's why I remembered it. But it appears this statement was outdated -- or simple false all along? Anyway once again sorry for the misinformation. Sylvain. -- Website: http://www.chicoree.fr
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