Substitute for this oracle query in postGre

From: "Kamalraj Singh Madhan" <kamalr(at)networkprograms(dot)com>
To: <pgsql-performance(at)postgresql(dot)org>
Subject: Substitute for this oracle query in postGre
Date: 2004-04-04 08:17:24
Message-ID: 02ad01c41a1d$4255a7a0$4ecb09c0@KAMALR
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Hi Friends,
Does anybody know the substitute of the oracle function 'connect by
prior' in postgre sql.
The query is basically being used to get a tree structure of records. The
query in oracle is :-

select pkmsgid
from mstmessage
connect by prior pkmsgid = msgparentid
start with msgparentid = 1

Kindly suggest.

regards
Kamal

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