Andreas Brandl <[email protected]> writes:
> we have a pretty big table with an integer-type primary key. I'm looking for
> the quickest way to change the column type to bigint to avoid hitting the
> integer limit. We're trying to avoid prolonged lock situations and full table
> rewrites.
You have no choice. Those types are different sizes so there is no way
to avoid a table rewrite.
> I know I can hack this with an UPDATE on pg_attribute:
> -- change id type to bigint
> update pg_attribute set atttypid=20 where attrelid=264782 and attname = 'id';
That WILL break your table.
regards, tom lane
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