作者:qaoxiuzcwhyx | 来源:互联网 | 2023-05-31 11:29
需求:将id为1的address字段值复制到id为2的addressupdateuser_infou1,user_infou2setu2.addressu1.addr
需求:将id为1的address字段值复制到id为2的address
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update user_info u1,user_info u2 set u2.address=u1.address
where u1.id=1 and u2.id=2;