VYBER *
Z tabuľky1 ako t1
LEVO JOIN tabuľky2 ako t2 ON t1.date_start > t2.date_start
--DML
Vytvorte tabuľku, ak neexistuje Employee (id int, salary int, departmentId int);
Vložte do Employee (id,salary,departmentId) hodnoty (1, 70000, 1),(2, 94000, 1),(3, 85000, 1),(4, 80000, 2),(5, 60000, 2),(6, 62000, 3),(7, 90000, 3),(8, 94000, 3),(9, 94000, 3);
s cte ako(
vyber *,
rank() over(partition by departmentId order by salary desc) ako max_salary
z Employee
)
výber *
z cte
kde max_salary = 1
