Re: ALTER TABLE TODO items
| От | Richard Huxton |
|---|---|
| Тема | Re: ALTER TABLE TODO items |
| Дата | |
| Msg-id | 40994463.1020401@archonet.com обсуждение исходный текст |
| Ответ на | Re: ALTER TABLE TODO items (Tom Lane <tgl@sss.pgh.pa.us>) |
| Ответы |
Re: ALTER TABLE TODO items
|
| Список | pgsql-hackers |
Tom Lane wrote: > Bruce Momjian <pgman@candle.pha.pa.us> writes: > >>Wow, you can reference different column as part of the alter column. > > > Yeah, the USING is actually any arbitrary expression over the old table > row. (Getting that to work was a tad tricky...) So you can view this > as a full-table UPDATE operation that folds in possible column type changes. Does that mean I'll want to disable triggers while I do this? Actually, if the structure's changing I presume I'll want to drop/recreate my triggers anyway (even if they get reparsed like view definitions). -- Richard Huxton Archonet Ltd
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