AW: Problems with RULE

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От Jens Hartwig
Тема AW: Problems with RULE
Дата
Msg-id 001001c0a728$1cedf0a0$c10ac98a@0000864A433A
обсуждение исходный текст
Ответ на Re: Problems with RULE  ("Richard Huxton" <dev@archonet.com>)
Список pgsql-sql
> [...]
> 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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