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Swap Salary LeetCode Solution

·1 min
Leetcode SQL
Mayukh Datta
Mayukh Datta
Table of Contents

Given a table salary, such as the one below, that has m=male and f=female values. Swap all f and m values (i.e., change all f values to m and vice versa) with a single update statement and no intermediate temp table.

Note that you must write a single update statement, DO NOT write any select statement for this problem.


id name sex salary
1 A m 2500
2 B f 1500
3 C m 5500
4 D f 500

After running your update statement, the above salary table should have the following rows:

id name sex salary
1 A f 2500
2 B m 1500
3 C f 5500
4 D m 500



update salary set sex = (case when sex = ’m’ then ‘f’ else ’m’ end);