为具有自定义日期/时间格式的数据库实现LINQ到SQL表达式

I'm working with an MS-SQL database with tables that use a customized date/time format stored as an integer. The format maintains time order, but is not one-to-one with ticks. Simple conversions are possible from the custom format to hours / days / months / etc. - for example, I could derive the month with the SQL statement:I'm working with an MS-SQL database with tables