Any opinions which to do, or alternate proposals? I'm leaning slightly to #2, since I doubt anyone is trying to use "IN" as a function name, but ...
One addition. The information_schema.parameters view will need to be updated to reflect parameter names.
http://www.postgresql.org/docs/7.4/static/infoschema-parameters.html
Quote: "Always null, since PostgreSQL does not support named parameters"
Chris
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