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From "Clint Morgan" <clint.mor...@troove.net>
Subject Re: Unique constraint
Date Thu, 18 Dec 2008 17:21:44 GMT
You could maintain an index, and then use the index to jump right to rows
for the column value(s) in question. See the tableindexed package for more


On Thu, Dec 18, 2008 at 4:37 AM, Slava Gorelik <slava.gorelik@gmail.com>wrote:

> Hi.I'm trying to implement Unique constraint on some column, but it looks
> like there no other solution than to scan all data.
> This solution is problematic from the performance perspective. Is it
> possible to implement this in the better way ?
> Best Regards.

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