Re: Need indexes on empty tables for good performance ?

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От Chris Travers
Тема Re: Need indexes on empty tables for good performance ?
Дата
Msg-id 43149AA9.4080902@travelamericas.com
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Ответ на Re: Need indexes on empty tables for good performance ?  ("Lenard, Rohan (Rohan)" <rlenard@avaya.com>)
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Lenard, Rohan (Rohan) wrote:

> Actually the indexes on the child table do seem to get used - I just
> wanted to make sure there was no penalty not having indexes on the
> empty parent tables.
>
> You are right - the parent is the best way to get at the unknown
> children ...

Indexes are created in the inheritance process, iirc.  However, index
entries are not inherited, which means that index-based unique
constraints don't properly get inherited.

Best Wishes,
Chris Travers
Metatron Technology Consulting

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