On 02/23/2016 10:22 AM, Pavel Stehule wrote:
>
> Vertica was written from scratch in C++. Maybe gram.y was used from Pg.
> But the client and SQL are strongly inspirited by Postgres. vsql is not
> psql probably, because psql is better. Last three years is not Vertica
> protocol compatible with Postgres. I don't know a reason why - I am
> expecting some strange marketing
According to some insider sources, they broke compatibility because it
was "faster" (without any actual performance testing). In an update
release, no less. I've been told that they lost a bunch of users over
this because it broke their tools with no warning.
--
--
Josh Berkus
Red Hat OSAS
(any opinions are my own)