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help / color / mirror / Atom feedFrom: Shaozhong SHI <[email protected]>
To: pgsql-sql <[email protected]>
Subject: How to just get the last in a recursive query
Date: Mon, 4 Apr 2022 23:14:22 +0100
Message-ID: <CA+i5Jwbh6Yy-zW3AX3WLCUJANky9w8HtVo99NPxMAc9APY0zhw@mail.gmail.com> (raw)
In-Reply-To: <CA+i5JwbAz1nO_yVtfBfDeJwk8NmEQ_8bC15cOEMyc_j_Zi70Jg@mail.gmail.com>
References: <CA+i5JwbAz1nO_yVtfBfDeJwk8NmEQ_8bC15cOEMyc_j_Zi70Jg@mail.gmail.com>
---------- Forwarded message ---------
From: Shaozhong SHI <[email protected]>
Date: Mon, 4 Apr 2022 at 23:13
Subject: How to just get the last in a recursive query
To: PostGIS Users Discussion <[email protected]>
In this example, Network Walking in PostGIS ยท Paul Ramsey
(cleverelephant.ca)
<http://blog.cleverelephant.ca/2010/07/network-walking-in-postgis.html;
3 rows got returns as follows:
id
---
6
3
1
How to just get the last (namely, 1) in the most efficient way?
Regards, David
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Subject: Re: How to just get the last in a recursive query
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