A few more questions…
The documentation says that a support function should have a signature "supportfn(internal) returns internal”, but
doesn’tsay which (if any) annotations should be provided. IMMUTABLE? PARALLEL SAFE? STRICT? None? All?
Variable SupportRequestCost is very exciting, but given that variable cost is usually driven by the complexity of
arguments,what kind of argument is the SupportRequestCost call fed during the planning stage? Constant arguments are
prettystraight forward, but what gets sent in when a column is one (or all) of the arguments?
Thanks,
P