AW: Problems with RULE

From: "Jens Hartwig" <jens(dot)hartwig(at)t-systems(dot)de>
To: "'Richard Huxton'" <dev(at)archonet(dot)com>
Cc: "'PSQL-Sql \(E-Mail\)'" <pgsql-sql(at)postgresql(dot)org>
Subject: AW: Problems with RULE
Date: 2001-03-07 17:00:28
Message-ID: 001001c0a728$1cedf0a0$c10ac98a@0000864A433A
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> [...]
> So - if you issue "DELETE FROM t_xyz" you'd want two things to happen:
>
> 1. where deleted is false set it to true
> 2. where deleted was true delete the record
>
> So - PG rewrites the query into two parts:
>
> DELETE FROM t_xyz WHERE old.deleted=false
> DELETE FROM t_xyz WHERE NOT(old.deleted=false)
> [...]

Oooooh ... that's it! I hit my head against the wall :-)

Thank you very much!

Best regards, Jens Hartwig

-----------------------------------------------------

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