MySQL Solution for Swap Salary Problem
Intuition\n Describe your first thoughts on how to solve this problem. \nThe intuition behind the given solution is to update the sex column in the salary table
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nThe intuition behind the given solution is to update the sex column in the salary table. It uses a CASE statement to conditionally set the value of sex based on its current value. If the current value is \'m\', it is updated to \'f\', and if the current value is \'f\', it is updated to \'m\'.\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\nThe approach taken is to use a CASE statement, which allows for conditional logic in SQL queries. By specifying the condition when sex = \'m\', the query checks if the current value of sex is \'m\' and sets it to \'f\' in that case. Similarly, the else part handles the case when the current value is \'f\' and sets it to \'m\'.\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\nThe time complexity of the update operation itself depends on the size of the salary table and the database system being used. However, the complexity of the CASE statement is constant because it evaluates the condition and sets the value in a single step.\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\nThe space complexity is also constant as it only involves updating the values in the existing rows of the salary table and does not require additional storage.\n\n# Code\n```\n# Write your MySQL query statement below\nupdate salary\nset sex = case when sex = \'m\' then \'f\' else \'m\' end;\n\n```
['MySQL']