Reordering columns
От | pgadmin@weevil.net |
---|---|
Тема | Reordering columns |
Дата | |
Msg-id | 20060925013023.GO29460@robo.Stanford.EDU обсуждение исходный текст |
Список | pgadmin-hackers |
Howdy, I was thinking of adding a feature to pgadmin3, and I just wanted to make sure there wasn't already someone working on it to avoid duplicating effort. It would be really nice to be able to either reorder the columns of a table or insert a new column at an arbitrary position. While PostgreSQL doesn't support this as such, you can achieve the same effect by: - Renaming the original table and all its constraints & triggers - Creating a new table with the desired schema - Inserting everything from the renamed old table into the new table - Re-creating the constraints & triggers - Dropping the old table, old constraints, and old triggers At one of my previous jobs, I used an awesome tool called DBArtisan that did exactly this (we use Sybase, which has [or had] the same limitation as PostgreSQL of not natively supporting reordering of table columns). If you added a new column at the end of a table, it would simply issue an ALTER TABLE command, but if you added one in the middle, or reordered existing columns, it would build a query as I've described above. Any thoughts, suggestions, criticisms would be appreciated. Cheers, Tony -- (lambda x. x x) (lambda x. x x)
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