Searches for and returns a parameter with the specified name.
function ParamByName(const Value: string): TOraParam;
Call the ParamByName method to find a parameter with the name passed in the Name argument.
If a match is found, ParamByName returns the parameter. Otherwise, an exception is raised.
OraSQL1.Execute;
Edit1.Text := OraSQL1.ParamsByName('Contact').AsString;