Don Y <pgsql@xxxxxxxxxxxxx> writes: > I'm writing a set of casts to/from various user defined > types. As is unexpected, there are cases where one > data type doesn't neatly map to another (for certain > values). In these cases I emit an INVALID_PARAMETER_VALUE > or OUT_OF_RANGE error -- depending on the situation. > But, should I also PG_RETURN_NULL()? elog(ERROR) doesn't return to your function --- think of it as being like exit(). So it's pointless to code anything after it. regards, tom lane
