2014-09-09 7:54 GMT+02:00 Craig Ringer <cr...@2ndquadrant.com>: > On 09/05/2014 05:21 PM, Pavel Stehule wrote: > > > > *shrug* Doing it in SQL would probably break more stuff. I'm trying to > > contain the damage. And arguably, this is mostly only useful in > PL/PgSQL. > > I've wanted assertions in SQL enough that I often write trivial wrappers > around `raise` in PL/PgSQL for use in `CASE` statements etc. >
In this moment we have no agreement on syntax, but there was not defined a requirements for aggregations. I looked on assertions in some languages and implementation and design of assertions is really varied. I though about it, and "Assertions" is not plpgsql only issue. It must be supported by core, and by other PL. There are two usual requests for Assertions: 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? Comments? Regards Pavel > > -- > Craig Ringer http://www.2ndQuadrant.com/ > PostgreSQL Development, 24x7 Support, Training & Services >
