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627. Swap Salary

时间:2018-10-17 16:44:09      阅读:108      评论:0      收藏:0      [点我收藏+]

标签:should   and   write   upd   else   rsa   OWIN   iat   with   

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 query and no intermediate temp table.

For example:

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

After running your query, 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
# Write your MySQL query statement below
UPDATE salary
    SET sex  = (CASE WHEN sex = ‘m‘ 
        THEN  ‘f‘
        ELSE ‘m‘
        END)

627. Swap Salary

标签:should   and   write   upd   else   rsa   OWIN   iat   with   

原文地址:https://www.cnblogs.com/bernieloveslife/p/9800593.html

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