Re: 7.2.1: pg_dump of UNIONed VIEWs broken

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От Bruce Momjian
Тема Re: 7.2.1: pg_dump of UNIONed VIEWs broken
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Msg-id 200204232103.g3NL3Eq18519@candle.pha.pa.us
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Ответ на 7.2.1: pg_dump of UNIONed VIEWs broken  (Ian Morgan <imorgan@webcon.net>)
Ответы Re: 7.2.1: pg_dump of UNIONed VIEWs broken  (Ian Morgan <imorgan@webcon.net>)
Re: 7.2.1: pg_dump of UNIONed VIEWs broken  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-bugs
Can someone phrase a TODO item for me?

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

Ian Morgan wrote:
> PostgreSQL 7.2.1's pg_dump prduces bad SQL for VIEW's.
>
> The SQL for CREATE VIEW as output by pg_dump generates an error, because the
> appropriate nesting of SELECTs with parentheses is missing:
> ERROR: parser: parse error at or near "SELECT"
>
>
> Original SQL:
>
> CREATE VIEW "agents" as (
>         (
>         SELECT DISTINCT
>                 employees.contact_id
>         FROM
>                 employees
>         ORDER BY
>                 employees.contact_id
>         )
> UNION
>         (
>         SELECT DISTINCT
>                 contractors.contact_id
>         FROM
>                 contractors
>         ORDER BY
>                 contractors.contact_id
>         )
> );
>
>
> As output by pg_dump:
>
> CREATE VIEW "agents" as SELECT DISTINCT employees.contact_id FROM employees
> ORDER BY employees.contact_id UNION SELECT DISTINCT contractors.contact_id
> FROM contractors ORDER BY contractors.contact_id;
>
> As you can see, the nesting is entirely lost.
>
> Regards,
> Ian Morgan
> --
> -------------------------------------------------------------------
>  Ian E. Morgan        Vice President & C.O.O.         Webcon, Inc.
>  imorgan@webcon.net         PGP: #2DA40D07          www.webcon.net
>     *  Customized Linux network solutions for your business  *
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