Converts Unicode string expressions to non-Unicode strings.
A non-Unicode string value.
When the database schema uses both Unicode and non-Unicode fields and the default string encoding is Unicode, this method can be used to convert a Unicode string expression to non-Unicode, using the specified codepage. The method can be used with OQL expressions and is translated to a server-side T-SQL CAST or to a combination of a T-SQL COLLATE and CAST if the codepage is specified.