Dear Andrei,
> Certaily I was thinking about this. And I've taken an advice of Teodor
> Sigaev - a much more expirienced developer than me. It seems that
> GetCurrentTimestamp() is fast enough for our purpose and we won't call
> it too often - only on new statement entry allocation.
OK.
> However, there is another way - we can store the curent value
> of pg_stat_statements_info.dealloc field when allocating a new
> statement entry instead of timstamping it. Probably, it would be little
> faster, but timestamp seems much more valuable here.
I don't like the idea because such a column has no meaning for the specific row.
I prefer storing timestamp if GetCurrentTimestamp() is cheap.
Best Regards,
Hayato Kuroda
FUJITSU LIMITED