On 21.03.2013 05:36, Tom Lane wrote:
Simon Riggs<[email protected]> writes:
On 20 March 2013 18:02, Tom Lane<[email protected]> wrote:
The API that comes to mind is (name subject to
bikeshedding)
pg_blocking_pids(pid int) returns int[]
Useful. Can we also have an SRF rather than an array?
I thought about that, but at least for the isolationtester use-case,
the array result is clearly easier to use. You can get from one to the
other with unnest() or array_agg(), so I don't really feel a need to
provide both. Can you generate use-cases where the set-result approach
is superior?
How about inverting the function into:
pg_pid_blocked_by(pid int) returns int
It would take as argument a pid, and return the pid of the process that
is blocking the given process. That would feel more natural to me.
- Heikki
--
Sent via pgsql-hackers mailing list ([email protected])
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
