What / where / how much are T-Sql courses in July in Moscow?

Question

IT education

Need refresher courses for 2-5 people in Moscow in July.
What you want from the courses: query optimization with full-text search / query optimization with xml / complex queries with having / query optimization with multiple joins / queries with cte.
The level of listeners - they know what an execution plan, indexes, complex queries are.
Directs / pays for a legal entity.