Re: [HACKERS] UPDATE of partition key - Mailing list pgsql-hackers

On Thu, Feb 16, 2017 at 8:53 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> Generally speaking, we don't throw
> serialization errors today at READ COMMITTED, so if we do so here,
> that's going to be a noticeable and perhaps unwelcome change.

Yes we do:

https://www.postgresql.org/docs/9.6/static/transaction-iso.html#XACT-REPEATABLE-READ

-- 
Thomas Munro
http://www.enterprisedb.com