On Fri, Jun 5, 2015 at 12:23 PM, Casey Deccio <casey@xxxxxxxxxx> 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.
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Mike Nolan
