Hi,
If I request an advisory lock (pg_advisory_lock) with the same key from several sessions; will the lock be granted in the same order as it was requested?
I.e. if for example:
session 1: select pg_advisory_lock(1); -- acquires the lock
then
session 2: select pg_advisory_lock(1); -- blocks waiting for the lock
then
session 3: select pg_advisory_lock(1); -- blocks waiting for the lock
then
session 1: select pg_advisory_unlock(1); -- releases the lock
Is it guaranteed that now session 2 will be granted the lock because it requested the lock before session 3?
Thanks,
Yossi
