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Re: BUG #4829: nth_value does not allow window frame

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "lily li" <lil(at)sybase(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #4829: nth_value does not allow window frame
Date: 2009-05-28 21:12:28
Message-ID: 362.1243545148@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-bugs
"lily li" <lil(at)sybase(dot)com> writes:
> It looks like postgreSQl 8.4 does not allow window frame clause inside OVER
> clause.

What it allows is spelled out in the fine manual:
http://www.postgresql.org/docs/8.4/static/sql-expressions.html#SYNTAX-WINDOW-FUNCTIONS

Future versions of PG might support more, but this is as far as 8.4
is going.

			regards, tom lane

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