Re: DB2-style INS/UPD/DEL RETURNING

From: Dave Cramer <pg(at)fastcrypt(dot)com>
To: Jonah H(dot) Harris <jonah(dot)harris(at)gmail(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: DB2-style INS/UPD/DEL RETURNING
Date: 2006-03-13 14:55:19
Message-ID: 783A7838-8A68-4BDE-9A32-4A9DDF235C25@fastcrypt.com
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One of the purposes of this as I understand it is to allow clients to
get back the generated key(s). I don't see enough of the syntax to
see if this is possible with the DB2 syntax below.

Dave
On 12-Mar-06, at 11:11 AM, Jonah H. Harris wrote:

> I was talking with Jonathan Gennick about the INS/UPD/DEL RETURNING
> stuff, and he recommended looking into the way DB2 handles similar
> functionality. After looking into it a bit, it's more inline with
> what Tom's suggestion was regarding a query from the operation
> rather than returning the values in the manner currently required.
>
> Here's DB2's syntax... does anyone have any familiarity with it?
>
> Simply put, it's sort-of like:
>
> SELECT * FROM (FINAL | NEW | OLD) TABLE (INSERT | UPDATE | DELETE)
>
> I'd like to hear from anyone that's used it to see if it really is
> better... logically it seems nicer, but I've never used it.
>
> --
> Jonah H. Harris, Database Internals Architect
> EnterpriseDB Corporation
> 732.331.1324

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