Mysql sql查询将表中的城市浦那替换为孟买，孟买替换为浦那

我有一个列名为city的表emp

city                         output table
-----
mumbai                           pune
pune                             mumbai
mumbai                           pune
pune                             mumbai
pune                             mumbai

---

我希望更新查询以替换pune到孟买和mumbai到pune

您可以通过查询执行此操作：

select (case when city = 'mumbai' then 'pune'
             when city = 'pune' then 'mumbai'
             else city
        end)
. . .

如果要更改值，请执行以下操作：

update table t
     set city = (case when city = 'mumbai' then 'pune'
                      when city = 'pune' then 'mumbai'
                 end)
     where city in ('mumbai', 'pune');

请尝试以下方法：

UPDATE TABLENAME
SET city= (
CASE 

WHEN city = 'mumbai'
THEN 'pune'

WHEN city = 'pune'
THEN 'mumbai'

END )

希望能有帮助