On 2016/03/02 2:26 AM, James K. Lowden wrote: > On Tue, 1 Mar 2016 08:15:25 -0500 > Richard Damon <Richard at Damon-Family.org> wrote: > >>> The theoretical maximum number of rows in a table is 264 >>> (18446744073709551616 or about 1.8e+19). This limit is unreachable >>> since the maximum database size of 140 terabytes will be reached >>> first. A 140 terabytes database can hold no more than approximately >>> 1e+13 rows, and then only if there are no indices and if each row >>> contains very little data. >>> >> You can hit 2^63 insertions well before hitting the size limit of the >> database if you have also been doing deletions. > Yes. If you manage 1,000,000 insertion/second, that's 3.15576 * > 10^13/year. You would run out of integers in 584,542 years. > > To get around that, add an "epoch" column, also integer. > Initially it is always zero. Whenever "position" exceeds 2^63, > increment "epoch" and reset "position" to zero. > > That will give you at least twice as many years.
No, that will give you 2^63 as many years... Which is many many times more than the age of the Universe and slightly less entries than there are atoms in the known Universe (About 10^80 on last count). Good idea, I think it will be enough. :)
