Which rows slip through the missing parens?

Question

Accepted Answer

AND binds before OR, so this reads as dept = 'Sales' OR (dept = 'HR' AND salary > 80000). Alice and Carol satisfy dept = 'Sales'. Bob satisfies the HR + high-salary branch. Dave is in HR but earns only 55000, so the AND branch is false for him. If you intended all Sales or HR employees, you would need (dept = 'Sales' OR dept = 'HR') AND salary > 80000.