更新&刪除 === ## 知識點 - update [table] set [field=newvalue,...] where ... - delete from [table] where ... ## 實戰 ``` > update users set score = 29.1 where player = '阿詹' > update users set score = score + 1 where team = '勇士' > update users set score = score + 100 where team IN ('勇士','騎士') > delete from useres where score > 30 ```