Re: [HACKERS] Re: ALTER TABLE DROP COLUMN
От | Bruce Momjian |
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Тема | Re: [HACKERS] Re: ALTER TABLE DROP COLUMN |
Дата | |
Msg-id | 200002280352.WAA16870@candle.pha.pa.us обсуждение исходный текст |
Ответ на | RE: [HACKERS] Re: ALTER TABLE DROP COLUMN (The Hermit Hacker <scrappy@hub.org>) |
Ответы |
RE: [HACKERS] Re: ALTER TABLE DROP COLUMN
|
Список | pgsql-hackers |
> > I would also change attname to '*already dropped %d' for > > examle to avoid duplicate attname. > > Okay, just curious here, but ... what you are proposing *sounds* to me > like half-way to what started this thread. (*Please* correct me if I'm > wrong) ... > > Essentially, in your proposal, when you drop a column, all subsequent > tuples inserted/updated would have ... that one column missing? So, > instead of doing a massive sweep through the table and removing that > column, only do it when an insert/update happens? > > Basically, eliminate the requirement to re-write every tuples, only those > that have activity? And I think the problem was that there was too much code to modify to allow this. -- Bruce Momjian | http://www.op.net/~candle 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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