How does MySQL update 2 tables at a time

Source: Internet
Author: User
Tags mysql update
Want to update 2 tables at the same time, 2 table UID Same, modify a table name and b table Nice, how broken

Reply content:

Want to update 2 tables at the same time, 2 table UID Same, modify a table name and b table Nice, how broken

mysql> select * from aa;+------+| id   |+------+|    2 |+------+1 row in set (0.00 sec)mysql> select * from bb;+------+| id   |+------+|    2 |+------+1 row in set (0.00 sec)mysql> update aa,bb set aa.id=3, bb.id=3 where aa.id=bb.id;Query OK, 2 rows affected (0.02 sec)Rows matched: 2  Changed: 2  Warnings: 0mysql> select * from bb;+------+| id   |+------+|    3 |+------+1 row in set (0.00 sec)mysql> select * from aa;+------+| id   |+------+|    3 |+------+1 row in set (0.00 sec)

If you need to force a synchronization operation, you can use the transaction

  • Contact Us

    The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

    If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

    A Free Trial That Lets You Build Big!

    Start building with 50+ products and up to 12 months usage for Elastic Compute Service

    • Sales Support

      1 on 1 presale consultation

    • After-Sales Support

      24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.