Comparing dates in Entity SQL

What is the correct eSQL syntax to compare dates?

The equivalent LINQ-to-Entities expression would look something like this:

var lastYearsShipments = from p in MyDataServiceContext.Products
                         where p.ShipDate.Value.Year == DateTime.Now.Year - 1
                         select p;


They say it's acceptable to answer your own question, so here goes ...

var predicate = string.Format(
    "Year(it.ShipDate) == Year(cast('{0}' as System.DateTime)) -1",

var lastYearsShipments = 
    myQuery.Products.Where(predicate); // myQuery is type ObjectQuery<T>

See also: msdn documentation

string datetimeFormatter = "yyyy-MM-dd HH:mm";

var predicate = string.Format("Year(it.ShipDate) == Year(DATETIME'{0}')) -1", System.DateTime.Now.ToString(datetimeFormatter)); 

var lastYearsShipments = myQuery.Products.Where(predicate); 

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