Swap Salary
Intuition\nThe task is to switch all values in the sex column: flip \'f\' to \'m\' and \'m\' to \'f\'. The CASE statement is an effective way to handle this, as
# Intuition\nThe task is to switch all values in the `sex` column: flip `\'f\'` to `\'m\'` and `\'m\'` to `\'f\'`. The `CASE` statement is an effective way to handle this, as it allows for conditional logic directly in the `SET` clause.\n\n# Approach\n- **Step 1:** Identify each row in the `Salary` table.\n- **Step 2:** For each row, evaluate the current value in the `sex` column.\n  - If the value is `\'f\'`, update it to `\'m\'`.\n  - If the value is anything other than `\'f\'`, update it to `\'f\'` (assuming it\'s `\'m\'`).\n- **Step 3:** Apply the updates and commit the changes.\n\n# Complexity\n- **Time Complexity:** The time complexity of this operation is (O(n)), where (n) is the number of rows in the `Salary` table. This is because each row must be evaluated and updated.\n- **Space Complexity:** The space complexity is (O(1)), as the operation requires a constant amount of additional space regardless of the size of the table.\n\n# Code\n```mysql []\n# Write your MySQL query statement below\nUPDATE Salary\nSET sex = (\n    CASE WHEN sex = \'f\' then \'m\'\n    ELSE \'f\'\n    END\n);\n```\n\n# Explanation:\n\n- The `UPDATE` statement is used to modify the data in the `Salary` table.\n- The `SET` clause indicates that the `sex` column will be updated.\n- The `CASE` statement is used to determine the new value for the `sex` column.\n  - If the current value of `sex` is `\'f\'`, it is changed to `\'m\'`.\n  - If the current value of `sex` is anything other than `\'f\'` (likely `\'m\'`), it is changed to `\'f\'`.\n\n\n
['Database', 'MySQL']