From: Tom Lane <tgl@sss.pgh.pa.us>
To: Ying Lu <ying_lu@cs.concordia.ca>
Cc: pgsql-sql@postgresql.org
Subject: Re: Index creation question for expression (col1 || '-' || col2)
Date: Fri, 08 Jul 2005 12:15:04 -0400
Message-ID: <23332.1120839304@sss.pgh.pa.us> (raw)
In-Reply-To: <42CEA509.3090507@cs.concordia.ca>
References: <42CEA509.3090507@cs.concordia.ca>
Ying Lu <ying_lu@cs.concordia.ca> writes:
> A question about creating index for the following expression.
> CREATE INDEX idx_t1 ON test (col1 || '-' || col2);
You need more parentheses:
CREATE INDEX idx_t1 ON test ((col1 || '-' || col2));
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, ying_lu@cs.concordia.ca
Subject: Re: Index creation question for expression (col1 || '-' || col2)
In-Reply-To: <23332.1120839304@sss.pgh.pa.us>
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