"David G. Johnston" <david.g.johnston@gmail.com> writes:
> The system knows that the datatype being inspected is "altschema.alttype" -
> would it be reasonable for the system to check for a function named "label"
> in the same schema as the target type, "altschema", with the target
> argument type and invoke it if present?
The rule is that (v).label is equivalent to label(v), therefore it will
only find function "label" if that's in your search path. I am very
much not excited about randomly enlarging the search path depending on
syntax --- quite aside from the difficulty of documenting it clearly,
that seems like a great recipe for security hazards.
regards, tom lane
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