Re: Feature request: Truncate table
От | Bruce Momjian |
---|---|
Тема | Re: Feature request: Truncate table |
Дата | |
Msg-id | 200206122226.g5CMQIE18056@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: Feature request: Truncate table (Bradley Kieser <brad@kieser.net>) |
Список | pgsql-hackers |
Bradley Kieser wrote: > Well in Ingres there is a WORLD of difference! For a start, you don't > lock out the system catalog. Secondly it is an unlogged event, so it > beats "delete from table_name" hands down! Then, of course, it preserves > all permissions, you keep the same OID, so views, et al, can remain in > tact, as with other objects that referece it. > > These are very important considerations in real-world applications esp. > when a large number of objects may reference the table. > > > Which brings me to another point - I would dearly love to see a > "refresh" option based on object name added to the system. This would > check all references to a dropped object, by name, and repoint them to > the new instance of that object (i.e. if you do a drop/create, it > doesn't mess up your entire system if you forgot about a view or three!). We have actually be moving away from name-based linking so you can rename tables and things still work. I can see value in a relinking system, but we would have to know the old oid and new name, I guess. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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