Jan Wieck wrote:
> On 09/14/2014 02:25 PM, Pavel Stehule wrote:
> >a) Isn't possible handle a assertion exception anywhere .. it enforce
> >ROLLBACK in 100%
> >
> >b) Assertions should be disabled globally .. I am not sure, it it is a
> >good idea, but I can understand so some tests based on queries to data
> >can be performance issue.
> >
> >Important question is a relation assertations and exceptions. Is it only
> >shortcut for exception or some different?
>
> I think that most data integrity issues can be handled by a well
> designed database schema that uses UNIQUE, NOT NULL, REFERENCES and
> CHECK constraints. Assertions are usually found inside of complex
> code constructs to check values of local variables. I don't think it
> is even a good idea to implement assertions that can query arbitrary
> data.
Actually Peter Eisentraut posted a patch for SQL assertions:
http://www.postgresql.org/message-id/1384486216.5008.17.camel@vanquo.pezone.net
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
