Can all SQL queries be represented in Relational Algebra, Domain and Tuple relational calculus

Question

My query includes a having and count or all in. How are these represented in RA/DRC/TRC? Would I have to simplify my SQL query even more? Here is a simplified example:

Answer 1

maybe you oversimplified your question.. but finding manager for employees in city X is a simple join - no Count or Having.

edit:

select  * 
from managers m,
( select employee from empl where city = 'XXXXX' ) e
where m.employee = e.employee