On 04/09/2013 09:06 AM, Alvaro Herrera wrote:
Fabio Rueda Carrascosa escribió:
My grant/revoke architecture is fine, you mean about costly cpu/ram queries?
Sure. The SQL dialect supported by Postgres is Turing-complete, so
people can write statements that consume arbitrary amounts of RAM and
diskspace, and run for arbitrary amounts of time -- regardless of
work_mem and other settings. (Actually, this was true even before the
dialect got to be Turing-complete).
A simple example that can crush your machine if you aren't careful:
select generate_series(1,1000000000000);
Now run it on 4 connections.
Sincerely,
Joshua D. Drake
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