Re: Odd query behavior

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От Dan McFadyen
Тема Re: Odd query behavior
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Msg-id BA48DC793F18724D862C27C8F2C131CC620A91@exchange03.cryptocard.internal
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Ответ на Odd query behavior  ("Dan McFadyen" <danm@cryptocard.com>)
Ответы Re: Odd query behavior  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-sql
Bah... yes Windows.

For being a developer I certainly miss all the details that make a good
bug report/question. Also, sorry about the CC, don't post to lists often
and I forget.

Now, the interesting part is for all I can tell, there are no special
characters in the field. Unless the latest version of Pgadmin (1.10.1 or
1.10.2) hides this from the UI, either that or it's some character that
renders into a similar glyph as ASCII.

Is there any way to force hex/binary in a SQL statement?


-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Monday, March 15, 2010 11:04 AM
To: Dan McFadyen
Cc: pgsql-sql@postgresql.org
Subject: Re: [SQL] Odd query behavior

"Dan McFadyen" <danm@cryptocard.com> writes:
> You're right, the second one does use an index, one that is used to
> enforce a unique constraint on the column. I wasn't able to turn it
off
> as the database is currently in use, and disabling a unique constraint
> probably isn't a good idea.

> Sorry for not mentioning the PG version, it's 8.3.

> Now, as for the LC_CTYPE, I didn't even know about such a thing till
you
> mentioned it, and I found the lovely disclaimers in the postgresql
docs
> about the consequences of it not being c or posix.

> It's Finnish Finland 1252. If that's the probable cause, I'm guessing
> the only option is to export, re-initdb, and import.

Oh, this is Windows huh?  In principle, UTF8 encoding should work in all
locales for Windows --- at least, the code thinks so, which is why it
let you create that combination to start with.  I'm not very familiar
with the possible pitfalls though.  If you don't actually have any use
for Finnish-specific sorting or case-folding, a re-initdb in C locale
would probably be a good idea.

In the meantime it seems there might be a bug here.  Can you give more
information about the contents of the column involved, in particular
what non-7-bit-ASCII characters it contains?
        regards, tom lane

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