On Thu, Apr 23, 2020 at 2:51 PM Fujii Masao <masao.fu...@oss.nttdata.com> wrote: > > Hi, > > I'd like to propose to introduce the +(pg_lsn, int8) and -(pg_lsn, int8) > operators. The + operator allows us to add the number of bytes into pg_lsn, > resulting new pg_lsn. The - operator allows us to substract the number > of bytes from pg_lsn, resulting new pg_lsn. Thought? > I sometimes need these features for debuging purpose.
As it's presented in the patch I don't see much value in calling it as LSN arithmetic. If we could do something like LSN of Nth WAL record +/- <number of WAL records, n> = LSN of N+/- n th log record that would be interesting. :) -- Best Wishes, Ashutosh Bapat
