On Fri, Jun 5, 2015 at 12:23 PM, Casey Deccio <ca...@deccio.net> wrote:
> I have a database in which one table references the primary key of > another. The type of the primary key was initially int, but I changed it > to bigint. However, I forgot to update the type of a column that > references it. So, I've initiated "ALTER TABLE foo ALTER COLUMN bar TYPE > bigint", where foo/bar is the table/column referencing the primary key that > is now of type bigint. > > However, with 2^31 rows, it is taking a "long" time to write the rows > (it's been 12 hours). Is there a more efficient way to do this? Even > if/when this one finishes, there are other column types that I have to > update. This update effectively locked me out of all access to the data > anyway, so I don't foresee any concern of writes that might affect > integrity. > > Cheers, > Casey > Probably too late for this time, but in the past when I've needed to redefine the type for a column, I've made a dump, edited the dump file to change the type and then renamed the table and reloaded it. That's usually several orders of magnitude faster. -- Mike Nolan no...@tssi.com
