Re: Index creation
| От | David G. Johnston |
|---|---|
| Тема | Re: Index creation |
| Дата | |
| Msg-id | CAKFQuwY0kww1BGk4-KhiLZRq=v1ygCUnav_QGo27QfAj1kFreA@mail.gmail.com обсуждение исходный текст |
| Ответ на | Index creation (Дмитрий Иванов <firstdismay@gmail.com>) |
| Ответы |
Re: Index creation
|
| Список | pgsql-general |
On Sun, Jun 19, 2022 at 12:06 PM Дмитрий Иванов <firstdismay@gmail.com> wrote:
Good afternoon.
I have a query parser question. If there are two kinds of queries using an indexed field. In this case, one view is limited to this field, the second one uses a number of fields included in the index by the include directive. It makes sense to have two indexes, lightweight and containing include. Or will the plan rely on the nearest suitable index without considering its weight?
The system should avoid the larger sized index unless it will sufficiently benefit from the Index Only Scan that such a larger covering index is supposed to facilitate.
David J.
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