string name, int argc, owned UserFunc func, owned FinalizeFunc final)
string name, int argc, owned UserFunc func, owned FinalizeFunc final)
Register aggregate function for use within SQLite
See SQLite documentation at http://sqlite.org/c3ref/create_function.html
| name | name of the function |
| argc | number of arguments the function accepts, or -1 for any |
| func | callback for the user defined function |
| final | callback to finalize the user defined function |