Re: Declarative partitioning grammar
От | Markus Schiltknecht |
---|---|
Тема | Re: Declarative partitioning grammar |
Дата | |
Msg-id | 478CE53A.8080106@bluegap.ch обсуждение исходный текст |
Ответ на | Re: Declarative partitioning grammar ("Zeugswetter Andreas ADI SD" <Andreas.Zeugswetter@s-itsolutions.at>) |
Список | pgsql-hackers |
Hi, Zeugswetter Andreas ADI SD wrote: > Yes, but the problem with the timestamp partitioned tables is, that the > window is sliding. Thus you would need two alter tables for each new > period. One that changes the constraint + one that creates the new > partition. So it seems natural to join the two concepts for such a > partitioning syntax. If you think in terms of split points, having to alter two table is not true. It's better > Personally I find the automatic partition idea intriguing, where you > only have to choose an expression that equates to one value (value > group) per partition (and possibly a way to derive a partition name). > Then a partition is automatically created when a new row arrives for a > new value. That does not however address Tom's concern of rejecting data > that is outside the acceptable window, but maybe that is better dealt > with in the application anyways. > > Andreas > > ---------------------------(end of broadcast)--------------------------- > TIP 9: In versions below 8.0, the planner will ignore your desire to > choose an index scan if your joining column's datatypes do not > match
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