Dian Fay <dian.m....@gmail.com> writes: > This basically does what it says, and the code looks good. The > documentation is out of alphabetical order (trim_array should appear > under cardinality rather than over)) but good otherwise. I was able to > "break" the function with an untyped null in psql:
> select trim_array(null, 2); > ERROR: could not determine polymorphic type because input has type unknown That's a generic parser behavior for polymorphic functions, not something this particular function could or should dodge. regards, tom lane