Published:
Given a table SALARIES, 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 query and no intermediate temp table. Id Name Sex Salary 1 A m 2500 2 B f 1500 3 C m 5500 4 D f 500 UPDATE SALARIES SET sex = CASE sex WHEN 'm' THEN 'f' ELSE 'm' END