Re: [SQL] (Ab)Using schemas and inheritance
От | Richard Broersma Jr |
---|---|
Тема | Re: [SQL] (Ab)Using schemas and inheritance |
Дата | |
Msg-id | 20060524174855.47650.qmail@web31807.mail.mud.yahoo.com обсуждение исходный текст |
Ответ на | Re: [SQL] (Ab)Using schemas and inheritance (Jorge Godoy <jgodoy@gmail.com>) |
Ответы |
Re: [SQL] (Ab)Using schemas and inheritance
|
Список | pgsql-general |
> If I SELECT from the schema it will only retrieve data from the schema. If I > select from the parent table then I'll have all data available -- and for the > parent table I might need some date index. From what I've read I am not sure that an Index created on the base/parent table will help when preforming select queries on data across all of the children. If I interpret the "Caveats" correctly I would assume that the index will only apply to data that is inserted directly into the base/parent table. From the Manual: 5.8.1. Caveats ... A serious limitation of the inheritance feature is that indexes (including unique constraints) and foreign key constraints only apply to single tables, not to their inheritance children. This is true on both the referencing and referenced sides of a foreign key constraint. Regards, Richard Broersma Jr.
В списке pgsql-general по дате отправления: