Bill,
Some functions they prototyped in MSSQL even return different types, based on certian parameters, I'm not sure how I'll do this in Postgres, but I'll have to figure something out.
We support that as of 7.4.1 to an extent; check out "Polymorphic Functions".
To my understanding, polymorphism means more than one function with same name but different signature(Sorry C++ days!!).
That still can not return rwos of two types in one call. At any moment, rowset returned by a function call would be homogenous.
Is MSSQL allows to mix rows of two types in single function invocation, I am sure that would be a hell lot of porting trouble..
Just a thought..
Shridhar
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