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Re: Unique constraints and indexes. - Mailing list pgsql-general

From Tom Lane
Subject Re: Unique constraints and indexes.
Date
Msg-id 11612.1452023250@sss.pgh.pa.us
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In response to Unique constraints and indexes.  (Steve Rogerson <steve.pg@yewtc.demon.co.uk>)
Responses Re: Unique constraints and indexes.
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Steve Rogerson <steve.pg@yewtc.demon.co.uk> writes:
> Is this a bug? I create a "unique" index, directly but it doesn't add a unique
> constraint. Add a unique constraint and it adds the index and the constraint.

That's operating as designed.  A unique constraint needs an index,
but not vice versa.

            regards, tom lane

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