Example:
select proname, provolatile from pg_proc where proname in ('now', 'clock_timestamp');
s stands for stable
v stands for volatile
i (still m, forgot) stands for immutable
Example:
select proname, provolatile from pg_proc where proname in ('now', 'clock_timestamp');
s stands for stable
v stands for volatile
i (still m, forgot) stands for immutable