Question

I have a syntax error in this subquery that I cannot seem to figure out why it won’t work. All the parens are matched

select min(max_s) 
from 
(select max(salary) from instructor group by dept_name) 
as s(max_s);

Error: near "(": syntax error

Answer 1

Use:

SELECT MIN(x.max_s) 
  FROM (SELECT MAX(i.salary) AS max_s 
          FROM INSTRUCTOR i
      GROUP BY i.dept_name) x