mysql - 更新查询SQL来更新表的各个字段？

Question

这是我的 table :

id    delivery_mode    old_delivery_mode

123   email             sms
126   sms               sms
139   email            facebook
147   facebook          email
198    sms               sms
210   sms               email

我想用这些值更新我的表字段值:

 sms=100
 email=200
 facebook=300

这样:

id    delivery_mode    old_delivery_mode

123   200               100
126   100               100
139   200               300
147   300               200
198   100               100
210   100               200

我想在单个 SQL 查询中执行此操作。

我该怎么做？

Answer 1

UPDATE  YOUR_TABLE_NAME
SET     delivery_mode =
        CASE
            WHEN delivery_mode = 'sms' THEN '100'
            WHEN delivery_mode = 'email' THEN '200'
            WHEN delivery_mode = 'facebook' THEN '300'
           WHEN delivery_mode THEN delivery_mode
        END,
     old_delivery_mode =
        CASE
            WHEN old_delivery_mode = 'sms' THEN  '100'
            WHEN old_delivery_mode = 'email' THEN '200'
            WHEN old_delivery_mode = 'facebook' THEN '300'
        WHEN old_delivery_mode THEN old_delivery_mode
        END