Oracle Simple Solution beats 86%
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\n/* Write your PL/SQL query statement below */\n\nselect coalesce(e.employee_id,s.employee_id) as employee_id \nfrom Employees e FULL OUTER JOIN Salaries s\nON e.employee_id = s.employee_id\nwhere name is null or salary is null\norder by employee_id;\n```
['Oracle']