I want to optimized my queries in Entity Framework 6.1.3, so I need to know that whether queries are already CompiledQueries or I need to write them manually as CompiledQuery?
Thanks in advance.
No, they are not. You'll need to specify that you want to use a CompiledQuery.
That said, using a compiled query will only provide a 7% performance improvement. If tuning performance of EF really is a major issue for you, I recommend reading the following: