Re: Remaining beta blockers
От | Josh Berkus |
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Тема | Re: Remaining beta blockers |
Дата | |
Msg-id | 517FFB6E.8010807@agliodbs.com обсуждение исходный текст |
Ответ на | Remaining beta blockers (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Remaining beta blockers
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Список | pgsql-hackers |
Robert, > - The data can be used if the matview is fully up-to-date. > - The data can be used if the matview is not out of date by more than > a certain amount of time. > - The data can be used if the matview is out of date with respect to > one of its base tables, but not if it is out of date with respect to > another of its base tables. For example, maybe you're OK with using > an order-summary view if new orders have arrived (but not if the view > is more than a day out of date); but not if any customers have been > renamed. We discussed this around the beginning of CF4. For some reason (which I didn't quite understand at the time), the consensus was that creating a "matview last updated" timestamp was not implementable for 9.3 and would need to wait for 9.4. Again, all of this points to additional columns, or at least relopts, in pg_class. Why is that off the table? -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com
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