Re: MS SQL features for new version
От | Rod Taylor |
---|---|
Тема | Re: MS SQL features for new version |
Дата | |
Msg-id | 1076445630.321.1.camel@jester обсуждение исходный текст |
Ответ на | MS SQL features for new version (Shridhar Daithankar <shridhar@frodo.hserus.net>) |
Ответы |
Re: MS SQL features for new version
Re: MS SQL features for new version Improved index creation (was:MS SQL features for new version) |
Список | pgsql-hackers |
On Tue, 2004-02-10 at 15:37, Robert Treat wrote: > On Tue, 2004-02-10 at 13:20, Rod Taylor wrote: > > > >http://www.microsoft.com/sql/yukon/productinfo/top30features.asp > > > > > Notice the Snapshot Isolation. Sounds like MVCC for MSSQL? > > > > Actually, the one I noticed was the ability to add or rebuild indexes on > > the fly. That is a pretty slick trick. > > > > I was trying to decide how much better this was than > > BEGIN; > DROP INDEX foo ON bar; > CREATE INDEX foo ON bar; > COMMIT; Well.. If thats a big table, you've just blocked selects, updates, delete, inserts, etc. against that table for the duration of the index recreation. Their text indicates that all activity on the table will not be blocked during the creation of a new index on that table. To me, that makes it a slick trick.
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