public static TElement Last <TKey, TElement>(this IQueryStrategyGrouping <TKey, TElement> source)
//public static TElement Last<TElement>(this IQueryStrategy<TElement> source)
{
// X:\jsc.svn\examples\javascript\LINQ\test\auto\TestSelect\TestGroupBy\Program.cs
return(default(TElement));
}
// http://stackoverflow.com/questions/3179021/sha1-hashing-in-sqlite-how
// while SQLite might allow iproc user funtions, appengine mysql likely will not.
//[Obsolete("non grouping methods shall use FirstOrDefault")]
// MYSQL and SQLITE seem to behave differently? in reverse actually!
public static TElement Last <TKey, TElement>(this IQueryStrategyGrouping <TKey, TElement> source)
{
// http://stackoverflow.com/questions/5140785/mysql-order-before-group-by
// http://www.tocker.ca/2013/10/21/heads-up-implicit-sorting-by-group-by-is-deprecated-in-mysql-5-6.html
// reverse and take 1 ?
// can we reverse yet? reorder by Key desc?
// then we could also do ElementAt
// but. would we be able to to reverse on nested orderbys?
// would have to flip all selectors
// in a way the group by already implements reverse ordering?
throw new NotImplementedException();
}
public static TElement First <TKey, TElement>(this IQueryStrategyGrouping <TKey, TElement> source)
{
// first to be used in groups
throw new NotImplementedException();
}