| From: | Ian Barwick <barwick(at)gmx(dot)net> |
|---|---|
| To: | Andreas Schmitz <andreas(dot)schmitz(at)as-dataservice(dot)de>, pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: UPDATE has a bug to update tables with an index of 2 columns |
| Date: | 2003-05-16 22:57:35 |
| Message-ID: | 200305170057.35535.barwick@gmx.net |
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| Lists: | pgsql-bugs |
On Friday 16 May 2003 21:46, Andreas Schmitz wrote:
> Please enter a FULL description of your problem:
> ------------------------------------------------
>
> Short: UPDATE has a bug to update tables with an index of 2 columns
(...)
> update test2 set v2=v2+2;
> ERROR: Duplizierter Wert kann nicht in »Unique«-Index uq_test
> eingefügt werden
-> "Cannot insert a duplicate key into unique index uq_test"
I would contend this is not a bug but a feature (or at most
not-yet-implemented functionality, i.e. no ability to defer
constraints other than foreign keys).
A possible workaround would be to create a trigger which
enforces the constraint.
Ian Barwick
barwick(at)gmx(dot)net
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