On 10/31/17 16:50, Pavel Stehule wrote: > Not sure if disabling RETURN is good idea. I can imagine so optional > returning something like int status can be good idea. Cheaper than > raising a exception.
We could allow a RETURN without argument in PL/pgSQL, if you just want to exit early. That syntax is currently not available, but it should not be hard to add.
I don't understand the point about wanting to return an int. How would you pass that around, since there is no declared return type?
We can create auto session variable STATUS. This variable can be 0 if procedure was returned without explicit RETURN value. Or it can hold different value specified by RETURN expr.
This value can be read by GET DIAGNOSTICS xxx = STATUS
or some similar.
The motivation is allow some mechanism cheaper than our exceptions.
Regards
Pavel
-- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
