FUNCTION database.AddDays does not exist

问题

I'm trying to use dbfunction from EF6 on database MySQL but I get the follow exception "FUNCTION database.DiffDays does not exist".

I used this code:

var aux = bd.Atos.Where(w => w.IdAtivo == 1 && w.IdUtilizador == idUtilizador && DbFunctions.DiffDays(DbFunctions.AddDays(w.Data, w.NumDias).Value, DateTime.Now).Value < numeroDias)

What I'm missing?

来源：https://stackoverflow.com/questions/24442260/function-database-adddays-does-not-exist