Re: n00b question re: indexes and constraints

Thanks, I should have been more specific, these are unique constraints I am
concerned about: so yeah, creating an index on a set of columns where
there's a unique constraint is redundant, correct?

On Wed, Apr 22, 2020 at 11:31 AM David G. Johnston <
david(dot)g(dot)johnston(at)gmail(dot)com> wrote:

> On Wed, Apr 22, 2020 at 11:26 AM Wells Oliver <wells(dot)oliver(at)gmail(dot)com>
> wrote:
>
>> Are constraints also indexes, or would you want an additional index on
>> top of a constraint if you wanted that column/combo indexed?
>>
>
> No, having a constraint does not imply that an index exists. However, the
> enforcement of a "unique" constraint is implemented by auto-creating a
> unique index.
>
> David J.
>
>

--
Wells Oliver
wells(dot)oliver(at)gmail(dot)com <wellsoliver(at)gmail(dot)com>