Thanks for the information.
I did try the approach, but it failed due to any other issue with npgsql.
The stored procedure returns a setof refcursor.
If I use "select * from test('e1':testEnum)", the command.ExecuteReader does
not return the datareader properly. The code errored out when I use the
datareader to get the data in the refcursor.
The stored procedure (return setof refcursor) works if I use prepared
statement, but in this case I am unable to do the explict type cast.
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