Max number of rows in a table

> --- Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Actually you can only have 4 billion SQL commands per xid, because the
> CommandId datatype is also just 32 bits.  I've never heard of anyone
> running into that limit, though.
> 

Wouldn't the above put a limit on a number of records one could have in table?
One have to use pg_dump/pg_restore to be able to upgrade between pgSql releases
and/or to backup data. If one cannot backup data and/or upgrade between pg
releases, then 4B records is the effective limit on the number of records in
pgSql ... or am I missing something?

Thanks






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