From: Dan McFadyen <danm@cryptocard.com>
To: pgsql-sql@postgresql.org
Subject: Odd query behavior
Date: Fri, 12 Mar 2010 10:41:30 -0500
Message-ID: <BA48DC793F18724D862C27C8F2C131CC62094F@exchange03.cryptocard.internal> (raw)
Hello,
I've come across an odd situation. I've had access to a database where a
the following happens:
" SELECT * FROM table WHERE name LIKE 'abc%' " returns 2 rows...
but...
" SELECT * FROM table WHERE name IN (SELECT name FROM table WHERE name
LIKE 'abc%') " returns 0 rows...
I've also tried doing a join on the column to another table that has
what appears to be the same data, and the join comes out with zero rows.
Weirder yet, I took the hash of both of the values and it came out
identical.
Now, I know the first thing you'll ask is if you can get a copy of the
data to re-produce it, and the problem is, I got a copy of the data in
question, and loaded into another server and it works fine. Both queries
return 2 rows.
I do know that server it was running on was Finnish. The database uses a
UTF8 encoding though, so I don't know what that would make any
difference.
Any ideas about things I should be looking at?
Thanks
Dan
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To: pgsql-sql@postgresql.org
Cc: danm@cryptocard.com
Subject: Re: Odd query behavior
In-Reply-To: <BA48DC793F18724D862C27C8F2C131CC62094F@exchange03.cryptocard.internal>
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