如何在一个CLR UDF中返回一个nvarchar(max) ?

Assuming following definition:

假设以下定义:

/// <summary>
/// Replaces each occurrence of sPattern in sInput with sReplace. This is done 
/// with the CLR: 
/// new RegEx(sPattern, RegexOptions.Multiline).Replace(sInput, sReplace). 
/// The result of the replacement is the return value.
/// </summary>
[SqlFunction(IsDeterministic = true)]
public static  SqlString FRegexReplace(string sInput, string sPattern, 
      string sReplace)
{
    return new Regex(sPattern, RegexOptions.Multiline).Replace(sInput, sReplace);
}
///