From: Chris Travers <chris@travelamericas.com>
To: pgsql-sql@postgresql.org
Subject: How to retrieve N lines of a text field.
Date: Thu, 29 Jan 2004 22:01:59 +0700
Message-ID: <010301c3e679$077698b0$5444053d@winxp> (raw)
Hi all;
This is a complex issue, and i am tryign to figure out how to use regular
expressions to resolve this issue. I need to retrieve the first N lines of
a text field. N would be assigned using a parameterized query, if possible.
I had thought about using something like:
select substring(test from '#"' || repeat('%\n', $1) || '#"%' for '#') from
multiline_test;
However, this always selects every line but the final one (because %\n seems
to be interpreted to be the largest possible string, while I want it to be
the smallest possible string).
Is there a workaround? Any other help? Or do I need to write a UDF?
Best Wishes,
Chris Travers
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To: pgsql-sql@postgresql.org
Cc: chris@travelamericas.com
Subject: Re: How to retrieve N lines of a text field.
In-Reply-To: <010301c3e679$077698b0$5444053d@winxp>
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